1365 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Oct 23, 2026 and Jan 1, 2035 (10436 limits); 365 of them reported a median above that limit between Oct 1, 2025 and Sep 30, 2026. EPA's file of Oct 16, 2026.

By state: IA 204 · PA 172 · LA 165 · OH 134 · MS 68 · AR 58 · TX 57 · MI 53 · GA 52 · VA 52 · MD 48 · NJ 35 · IN 31 · SC 23 · KS 21 · MN 21 · NY 21 · MO 20 · WV 17 · OR 16 · IL 14 · FL 10 · NE 9 · OK 8 · TN 8 · CO 7 · UT 7 · NM 6 · CA 5 · SD 5 · CT 3 · ID 3 · ME 2 · WI 2 · AL 1 · DC 1 · KY 1 · MT 1 · NH 1 · PR 1 · VT 1 · WA 1

Plant	Permit	State	Type	Design flow	Parameter	New limit	Effective	Today's median	× limit
Landers BCO, LLC d/b/a Crossroads Village	AR0050563	AR	Industrial	.05 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Nov 1, 2026	1 mg/L (11 values)	90.9×
Climax Molybdenum Company	CO0000230	CO	Industrial, major	.1 MGD	Solids, total suspended	30-day average 30 mg/L, new	Nov 1, 2026	100 mg/L (11 values)	3.33×
Climax Molybdenum Company	CO0000230	CO	Industrial, major	.1 MGD	Solids, total suspended	maximum 7-day average 45 mg/L, new	Nov 1, 2026	100 mg/L (11 values)	2.22×
Climax Molybdenum Company	CO0000230	CO	Industrial, major	.1 MGD	BOD, 5-day, 20 deg. C	30-day average 30 mg/L, new	Nov 1, 2026	56 mg/L (11 values)	1.87×
Climax Molybdenum Company	CO0000230	CO	Industrial, major	.1 MGD	Chlorine, total residual	instantaneous maximum 0.5 mg/L, tighter	Nov 1, 2026	0.7 mg/L (11 values, 1 below detection)	1.4×
Climax Molybdenum Company	CO0000230	CO	Industrial, major	.1 MGD	BOD, 5-day, 20 deg. C	maximum 7-day average 45 mg/L, new	Nov 1, 2026	56 mg/L (11 values)	1.24×
TULPEHOCKEN AREA SCH DIST	PA0051748	PA	Industrial	.022 MGD	Chlorine, total residual	monthly average 0.25 mg/L, tighter	Nov 1, 2026	0.28 mg/L (9 values)	1.12×
HUDSON CNTY BD OF CHOSEN FREEHOLDERS	NJ0023566	NJ	Sewage plant	.75 MGD	Copper, total recoverable	monthly average 3.3 ug/L, tighter	Dec 1, 2026	18.25 ug/L (10 values)	5.53×
St Johns County Utility Dept	FL0169226	FL	Industrial	.087 MGD	Specific conductance	daily maximum 1275 umho/cm, tighter	Dec 1, 2026	4782 umho/cm (4 values)	3.75×
HUDSON CNTY BD OF CHOSEN FREEHOLDERS	NJ0023566	NJ	Sewage plant	.75 MGD	Copper, total recoverable	daily maximum 5.8 ug/L, tighter	Dec 1, 2026	18.25 ug/L (10 values)	3.15×
WESTPORT WWTP	IN0024830	IN	Sewage plant	.43 MGD	Nitrogen, ammonia total [as N]	monthly average 3.2 mg/L (Jan, Feb, Mar, Apr, Dec), tighter	Dec 1, 2026	9.023 mg/L (3 values)	2.82×
WESTPORT WWTP	IN0024830	IN	Sewage plant	.43 MGD	Nitrogen, ammonia total [as N]	maximum weekly average 4.8 mg/L (Jan, Feb, Mar, Apr, Dec), tighter	Dec 1, 2026	11.4 mg/L (3 values)	2.38×
WESTPORT WWTP	IN0024830	IN	Sewage plant	.43 MGD	Nitrogen, ammonia total [as N]	monthly average 1.6 mg/L (May–Nov), tighter	Dec 1, 2026	3.645 mg/L (4 values)	2.28×
HUDSON CNTY BD OF CHOSEN FREEHOLDERS	NJ0023566	NJ	Sewage plant	.75 MGD	Zinc, total recoverable	monthly average 56.1 ug/L, tighter	Dec 1, 2026	114.5 ug/L (10 values)	2.04×
WESTPORT WWTP	IN0024830	IN	Sewage plant	.43 MGD	Nitrogen, ammonia total [as N]	maximum weekly average 2.4 mg/L (May–Nov), tighter	Dec 1, 2026	4.065 mg/L (4 values)	1.69×
KERE ASSOCIATES	NJ0024163	NJ	Industrial	.02 MGD	Copper, total recoverable	monthly average 8.5 ug/L, new	Dec 1, 2026	12.1 ug/L (10 values, 1 below detection)	1.42×
City of Wapakoneta WRF	OH0027952	OH	Sewage plant, major	6 MGD	Selenium, total recoverable	monthly average 5.3 ug/L, new	Dec 1, 2026	6.5 ug/L (6 values)	1.23×
New Bremen, Village of	OH0020346	OH	Sewage plant	.9 MGD	Solids, total dissolved- 180 deg. C	monthly average 1501 mg/L, new	Dec 1, 2026	1760 mg/L (11 values)	1.17×
OKHISSA LAKE SEWER DISTRICT WASTEWATER FACILITY	MS0060291	MS	Sewage plant	.4 MGD	Nitrogen, ammonia total [as N]	maximum monthly average 1.37 mg/L, tighter	Dec 18, 2026	10.1 mg/L (3 values)	7.37×
OKHISSA LAKE SEWER DISTRICT WASTEWATER FACILITY	MS0060291	MS	Sewage plant	.4 MGD	Nitrogen, ammonia total [as N]	maximum monthly average 4.6 lb/d, tighter	Dec 18, 2026	10.1 lb/d (3 values)	2.2×
OKHISSA LAKE SEWER DISTRICT WASTEWATER FACILITY	MS0060291	MS	Sewage plant	.4 MGD	Nitrogen, ammonia total [as N]	maximum weekly average 6.9 lb/d, tighter	Dec 18, 2026	10.1 lb/d (3 values)	1.46×
TOWN OF MAURICE - SOUTH WWTP	LA0127202	LA	Sewage plant	—	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	Jan 1, 2027	1.05 mg/L (9 values)	31.8×
Town of Maurice- Maurice WTP	LA0038393	LA	Sewage plant	.09 MGD	Chlorine, total residual	instantaneous maximum 0.039 mg/L, new	Jan 1, 2027	1.08 mg/L (9 values)	27.7×
Pleasant View Estates Improvement District Number 1 of Pope County	AR0046396	AR	Sewage plant	.15 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Jan 1, 2027	0.16 mg/L (11 values)	14.5×
Erie Co Dept of Environmental Services	OH0053082	OH	Sewage plant, major	2.4 MGD	Nitrogen, ammonia total [as N]	monthly average 1 mg/L (May–Oct), new	Jan 1, 2027	6.64 mg/L (5 values)	6.64×
PAYSON CITY CORP	UT0020427	UT	Sewage plant, major	3 MGD	Chlorine, total residual	daily maximum 0.4 mg/L (Apr–Jun), tighter	Jan 1, 2027	1.5 mg/L (3 values)	3.75×
PAYSON CITY CORP	UT0020427	UT	Sewage plant, major	3 MGD	Chlorine, total residual	daily maximum 0.3 mg/L (Jan–Mar), tighter	Jan 1, 2027	1.1 mg/L (3 values)	3.67×
Sacred Heart city of	MN0024708	MN	Sewage plant	.237 MGD	Chloride [as Cl]	monthly average 230 mg/L (Jan, Mar, May, Jul, Sep, Nov), new	Jan 1, 2027	821 mg/L (5 values)	3.57×
City of Oxford	OH0026930	OH	Sewage plant, major	4.2 MGD	Phosphorus, total [as P]	monthly average 1 mg/L, new	Jan 1, 2027	2.19 mg/L (11 values)	2.19×
JACKSON GENERATION LLC	IL0080134	IL	Industrial	.46 MGD	Nitrogen, ammonia total [as N]	daily maximum 5.6 mg/L (Jan, Feb, Nov, Dec), new	Jan 1, 2027	11.9 mg/L (4 values)	2.12×
City of Monticello	GA0020141	GA	Sewage plant	.404 MGD	Nitrogen, ammonia total [as N]	monthly average 9.5 mg/L, new	Jan 1, 2027	18.4 mg/L (11 values)	1.94×
PALISADES SCH DIST	PA0029530	PA	Industrial	.022 MGD	Nitrogen, ammonia total [as N]	monthly average 1.5 mg/L (May–Oct), tighter	Jan 1, 2027	2.8 mg/L (3 values)	1.87×
Erie Co Dept of Environmental Services	OH0053082	OH	Sewage plant, major	2.4 MGD	Nitrogen, ammonia total [as N]	monthly average 3 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), new	Jan 1, 2027	4.95 mg/L (6 values)	1.65×
HARFORD TWP SUSQUEHANNA CNTY	PA0063100	PA	Sewage plant	.05 MGD	Copper, total [as Cu]	monthly average 28 ug/L, new	Jan 1, 2027	38.7 ug/L (9 values)	1.38×
AJINOMOTO HEALTH & NUTRITION NORTH AMERICA, INC.	IA0065692	IA	Industrial	.0048 MGD	Chlorine, total residual	daily maximum 0.085 mg/L, tighter	Jan 1, 2027	0.11 mg/L (11 values)	1.29×
GREENFIELD WWTP	IN0020109	IN	Sewage plant, major	8 MGD	Cyanide, free [as free]	monthly average 0.0043 mg/L, new	Jan 1, 2027	0.005 mg/L (11 values, 1 below detection)	1.16×
Neighbors of Walnut Grove, LLC	KS0092053	KS	Industrial	—	Phosphorus, Total As P	DG 0.5 lb/d, new	Jan 1, 2027	0.5659 lb/d (11 values)	1.13×
PAYSON CITY CORP	UT0020427	UT	Sewage plant, major	3 MGD	Nitrogen, ammonia total [as N]	daily maximum 4 mg/L (Apr–Jun), tighter	Jan 1, 2027	4.26 mg/L (3 values)	1.06×
Erie Co Dept of Environmental Services	OH0053082	OH	Sewage plant, major	2.4 MGD	BOD, carbonaceous [5 day, 20 C]	weekly maximum 15 mg/L, tighter	Jan 1, 2027	15.5 mg/L (10 values)	1.03×
Erie Co Dept of Environmental Services	OH0053082	OH	Sewage plant, major	2.4 MGD	BOD, carbonaceous [5 day, 20 C]	monthly average 10 mg/L, tighter	Jan 1, 2027	10.25 mg/L (10 values)	1.02×
Erie Co Dept of Environmental Services	OH0053082	OH	Sewage plant, major	2.4 MGD	Phosphorus, total [as P]	monthly average 0.5 mg/L, tighter	Jan 1, 2027	0.51 mg/L (11 values)	1.02×
MAHONING TWP ARMSTRONG CNTY	PA0252581	PA	Sewage plant	.09 MGD	Chlorine, total residual	monthly average 0.01 mg/L, tighter	Jan 31, 2027	0.04 mg/L (9 values)	4×
EMPIRE REALTY HOMES LLC	PA0255416	PA	Industrial	.035 MGD	Chlorine, total residual	monthly average 0.5 mg/L, tighter	Jan 31, 2027	0.95 mg/L (9 values)	1.9×
MAHONING TWP ARMSTRONG CNTY	PA0252581	PA	Sewage plant	.09 MGD	Chlorine, total residual	instantaneous maximum 0.04 mg/L, tighter	Jan 31, 2027	0.06 mg/L (9 values)	1.5×
P & B ESTATES LLC	PA0091260	PA	Industrial	.011 MGD	Chlorine, total residual	monthly average 0.21 mg/L, tighter	Jan 31, 2027	0.28 mg/L (9 values)	1.33×
EMPIRE REALTY HOMES LLC	PA0255416	PA	Industrial	.035 MGD	Chlorine, total residual	instantaneous maximum 1.6 mg/L, tighter	Jan 31, 2027	1.85 mg/L (9 values)	1.16×
Ozark Interests, Inc - Camp Ozark	AR0048275	AR	Industrial	.091 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Feb 1, 2027	0.07 mg/L (3 values)	6.36×
City of Steele	MO0057444	MO	Sewage plant	—	Nitrogen, ammonia total [as N]	monthly average 3.9 mg/L (Jan, Feb, Mar, Nov), new	Feb 1, 2027	9.585 mg/L (4 values)	2.46×
CANONSBURG HOUSTON JT AUTH	PA0025941	PA	Sewage plant, major	14.4 MGD	Nitrogen, ammonia total [as N]	monthly average 2.16 mg/L (May–Oct), tighter	Feb 1, 2027	3.6 mg/L (3 values)	1.67×
TA OPERATING LLC	WV0115673	WV	Industrial	—	Zinc, total recoverable	daily maximum 0.12 mg/L, new	Feb 1, 2027	0.175 mg/L (3 values)	1.46×
CANONSBURG HOUSTON JT AUTH	PA0025941	PA	Sewage plant, major	14.4 MGD	Nitrogen, ammonia total [as N]	weekly average 3.24 mg/L (May–Oct), tighter	Feb 1, 2027	4.5 mg/L (3 values)	1.39×
CANONSBURG HOUSTON JT AUTH	PA0025941	PA	Sewage plant, major	14.4 MGD	Nitrogen, ammonia total [as N]	monthly average 4.47 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), tighter	Feb 1, 2027	5.5 mg/L (6 values)	1.23×
CANONSBURG HOUSTON JT AUTH	PA0025941	PA	Sewage plant, major	14.4 MGD	Nitrogen, ammonia total [as N]	weekly average 6.7 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), tighter	Feb 1, 2027	7.9 mg/L (6 values)	1.18×
FREEPORT LNG DEVELOPMENT LP	TX0134056	TX	Industrial	—	Chloride	daily average 569 mg/L, new	Feb 1, 2027	660 mg/L (5 values)	1.16×
JOHNSTOWN REDEV AUTH CAMBRIA CNTY	PA0026034	PA	Sewage plant, major	12 MGD	Nitrogen, ammonia total [as N]	monthly average 16.32 mg/L (May–Oct), tighter	Feb 1, 2027	18.1 mg/L (3 values)	1.11×
CITY OF PEOSTA	IA0075507	IA	Sewage plant	.081 MGD	Chloride [as Cl]	30-day average 389 mg/L, new	Feb 1, 2027	403 mg/L (11 values)	1.04×
TUNICA COUNTY UTILITY DISTRICT, DUNDEE FACILITY	MS0058165	MS	Sewage plant	.05 MGD	Nitrogen, ammonia total [as N]	maximum monthly average 1.37 mg/L, tighter	Feb 20, 2027	6.55 mg/L (3 values)	4.78×
TUNICA COUNTY UTILITY DISTRICT, DUNDEE FACILITY	MS0058165	MS	Sewage plant	.05 MGD	Nitrogen, ammonia total [as N]	maximum weekly average 2.05 mg/L, tighter	Feb 20, 2027	6.55 mg/L (3 values)	3.2×
Prescott, City of - Prescott Wastewater Treatment Plant	AR0033481	AR	Sewage plant	.85 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Mar 1, 2027	1.35 mg/L (11 values)	123×
CRANBERRY TWP BUTLER CNTY	PA0024571	PA	Sewage plant, major	7.5 MGD	Cyanide, free available	monthly average 0.35 lb/d, new	Mar 1, 2027	26 lb/d (9 values)	74.3×
Spring Hill School District	AR0046345	AR	Industrial	.02 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Mar 1, 2027	0.5 mg/L (11 values)	45.5×
FREEPORT LNG DEVELOPMENT LP	TX0127566	TX	Industrial	—	Copper, total [as Cu]	daily average 0.0241 mg/L, new	Mar 1, 2027	0.41 mg/L (8 values)	17×
PENNSBURY VILLAGE BORO ALLEGHENY CNTY	PA0047228	PA	Sewage plant	.17 MGD	Chlorine, total residual	monthly average 0.02 mg/L, tighter	Mar 1, 2027	0.31 mg/L (9 values)	15.5×
Smackover, City of	AR0021440	AR	Sewage plant	.5 MGD	Chlorine, total residual	instantaneous maximum 0.014 mg/L, new	Mar 1, 2027	0.2 mg/L (11 values)	14.3×
Norphlet, City of - Norphlet Wastewater Treatment System	AR0035653	AR	Sewage plant	.18 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Mar 1, 2027	0.15 mg/L (11 values)	13.6×
LINCOLN, CITY OF	IL0029564	IL	Sewage plant, major	10.27 MGD	Chlorine, total residual	daily maximum 0.038 mg/L, tighter	Mar 1, 2027	0.375 mg/L (6 values)	9.87×
Dierks, City of - Dierks Wastewater Treatment Facility	AR0021709	AR	Sewage plant	.23 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Mar 1, 2027	0.105 mg/L (10 values)	9.55×
FREEPORT LNG DEVELOPMENT LP	TX0127566	TX	Industrial	—	Copper, total [as Cu]	daily maximum 0.0511 mg/L, new	Mar 1, 2027	0.47 mg/L (8 values)	9.2×
ARNAUDVILLE, TOWN OF	LA0046639	LA	Sewage plant	.36 MGD	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	Mar 1, 2027	0.27 mg/L (9 values)	8.18×
PENNSBURY VILLAGE BORO ALLEGHENY CNTY	PA0047228	PA	Sewage plant	.17 MGD	Chlorine, total residual	instantaneous maximum 0.07 mg/L, tighter	Mar 1, 2027	0.51 mg/L (9 values)	7.29×
Mentor ABI, LLC d/b/a NeuroRestorative Timber Ridge	AR0041416	AR	Industrial	.012 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Mar 1, 2027	0.08 mg/L (3 values, 1 below detection)	7.27×
FREEPORT LNG DEVELOPMENT LP	TX0127566	TX	Industrial	—	Zinc, total [as Zn]	daily average 0.255 mg/L, new	Mar 1, 2027	0.937 mg/L (8 values)	3.67×
Kenbridge Town	VA0026239	VA	Sewage plant	.6 MGD	Nitrogen, ammonia total [as N]	monthly average 1.21 mg/L (Jan–Apr), tighter	Mar 1, 2027	3.3 mg/L (3 values)	2.73×
GLOBAL ADVANCED METALS USA INC	PA0011266	PA	Industrial	.248 MGD	Antimony, total [as Sb]	monthly average 0.061 mg/L, new	Mar 1, 2027	0.161 mg/L (8 values)	2.64×
GLOBAL ADVANCED METALS USA INC	PA0011266	PA	Industrial	.248 MGD	Antimony, total [as Sb]	monthly average 0.09 lb/d, new	Mar 1, 2027	0.2125 lb/d (8 values)	2.36×
FREEPORT LNG DEVELOPMENT LP	TX0127566	TX	Industrial	—	Zinc, total [as Zn]	daily maximum 0.539 mg/L, new	Mar 1, 2027	1.065 mg/L (8 values)	1.98×
GLOBAL ADVANCED METALS USA INC	PA0011266	PA	Industrial	.248 MGD	Antimony, total [as Sb]	daily maximum 0.0952 mg/L, new	Mar 1, 2027	0.185 mg/L (8 values)	1.94×
GLOBAL ADVANCED METALS USA INC	PA0011266	PA	Industrial	.248 MGD	Antimony, total [as Sb]	daily maximum 0.14 lb/d, new	Mar 1, 2027	0.245 lb/d (8 values)	1.75×
GLOBAL ADVANCED METALS USA INC	PA0011266	PA	Industrial	.248 MGD	Arsenic, total [as As]	monthly average 0.109 mg/L, new	Mar 1, 2027	0.1335 mg/L (8 values)	1.22×
Fairfield Co Utilities	OH0054305	OH	Sewage plant, major	—	Solids, total dissolved- 180 deg. C	monthly average 1684 mg/L, new	Mar 1, 2027	1898 mg/L (6 values)	1.13×
GLOBAL ADVANCED METALS USA INC	PA0011266	PA	Industrial	.248 MGD	Arsenic, total [as As]	monthly average 0.16 lb/d, new	Mar 1, 2027	0.1705 lb/d (8 values)	1.07×
LEIDOS RENEWABLE ENERGY, LLC	CT0030473	CT	Industrial	—	pH, maximum	instantaneous maximum 8 SU, tighter	Mar 1, 2027	8.4 SU (17 values)	1.05×
COLWICH, CITY OF	KS0090956	KS	Sewage plant	—	Nitrogen, ammonia total [as N]	monthly average 1.7 mg/L (Jul–Sep), new	Mar 31, 2027	1.93 mg/L (3 values)	1.14×
Village of Columbus Grove WWTP	OH0024759	OH	Sewage plant	.82 MGD	Mercury, total low level	monthly average 1.3 ng/L, tighter	Apr 1, 2027	26 ng/L (11 values)	20×
WAVERLY TWP LACKAWANNA CNTY	PA0061034	PA	Sewage plant	.5 MGD	Chlorine, total residual	monthly average 0.02 mg/L, tighter	Apr 1, 2027	0.25 mg/L (8 values)	12.5×
WAVERLY TWP LACKAWANNA CNTY	PA0061034	PA	Sewage plant	.5 MGD	Chlorine, total residual	instantaneous maximum 0.06 mg/L, tighter	Apr 1, 2027	0.4 mg/L (8 values)	6.67×
EAGLE LAKE COMM ASSN INC	PA0061603	PA	Industrial	.5 MGD	Nitrogen, ammonia total [as N]	monthly average 1.4 mg/L (May–Oct), tighter	Apr 1, 2027	8.8 mg/L (3 values)	6.29×
City of Monticello	GA0020150	GA	Sewage plant	.12 MGD	Nitrogen, ammonia total [as N]	monthly average 3 mg/L, new	Apr 1, 2027	17.9 mg/L (11 values)	5.97×
Village of Columbus Grove WWTP	OH0024759	OH	Sewage plant	.82 MGD	Mercury, total low level	monthly average 0.000004 kg/d, tighter	Apr 1, 2027	0.000021 kg/d (11 values)	5.25×
Elida, Village of	OH0024996	OH	Sewage plant	.8 MGD	Nitrogen, ammonia total [as N]	monthly average 3 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), new	Apr 1, 2027	15.26 mg/L (6 values)	5.09×
Westside Consolidated School District No. 5	AR0041629	AR	Industrial	.03 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Apr 1, 2027	0.05 mg/L (3 values)	4.55×
TimkenSteel Corp. - Canton WWTP	OH0004219	OH	Industrial, major	—	Selenium, total recoverable	monthly average 5 ug/L, new	Apr 1, 2027	18.5 ug/L (6 values)	3.7×
JUNCTION CITY, CITY OF	KS0092151	KS	Sewage plant	—	Phosphorus, Total As P	DG 20.9 lb/d, new	Apr 1, 2027	61.18 lb/d (12 values)	2.93×
Elida, Village of	OH0024996	OH	Sewage plant	.8 MGD	Phosphorus, total [as P]	monthly average 1 mg/L, new	Apr 1, 2027	2.3 mg/L (11 values)	2.3×
EAGLE LAKE COMM ASSN INC	PA0061603	PA	Industrial	.5 MGD	Nitrogen, ammonia total [as N]	monthly average 5.8 lb/d (May–Oct), tighter	Apr 1, 2027	11 lb/d (3 values)	1.9×
Elida, Village of	OH0024996	OH	Sewage plant	.8 MGD	BOD, carbonaceous [5 day, 20 C]	monthly average 10 mg/L, tighter	Apr 1, 2027	17.95 mg/L (11 values)	1.79×
CITY OF KALONA	IA0059196	IA	Sewage plant	1.77 MGD	E. coli	daily maximum 126 #/100mL (Mar–Nov), new	Apr 1, 2027	201.5 #/100mL (4 values)	1.6×
Elida, Village of	OH0024996	OH	Sewage plant	.8 MGD	BOD, carbonaceous [5 day, 20 C]	weekly maximum 15 mg/L, tighter	Apr 1, 2027	21.55 mg/L (11 values)	1.44×
TOWN OF LOGANSPORT	LA0033308	LA	Sewage plant	.4 MGD	BOD, 5-day, 20 deg. C	monthly average 10 mg/L, tighter	Apr 1, 2027	13.9 mg/L (11 values)	1.39×
Elida, Village of	OH0024996	OH	Sewage plant	.8 MGD	Solids, total suspended	weekly maximum 18 mg/L, tighter	Apr 1, 2027	23.2 mg/L (11 values)	1.29×
Elida, Village of	OH0024996	OH	Sewage plant	.8 MGD	Solids, total suspended	monthly average 12 mg/L, tighter	Apr 1, 2027	15.2 mg/L (11 values)	1.27×
TOWN OF LOGANSPORT	LA0033308	LA	Sewage plant	.4 MGD	Solids, total suspended	monthly average 15 mg/L, tighter	Apr 1, 2027	18.8 mg/L (11 values)	1.25×
Village of Columbus Grove WWTP	OH0024759	OH	Sewage plant	.82 MGD	Nitrogen, ammonia total [as N]	monthly average 0.86 mg/L, tighter	Apr 1, 2027	1.06 mg/L (11 values)	1.23×
WAVERLY TWP LACKAWANNA CNTY	PA0061034	PA	Sewage plant	.5 MGD	Nitrogen, ammonia total [as N]	monthly average 4.5 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), tighter	Apr 1, 2027	5.5 mg/L (5 values, 2 below detection)	1.22×
Village of Columbus Grove WWTP	OH0024759	OH	Sewage plant	.82 MGD	Nitrogen, ammonia total [as N]	weekly maximum 1.29 mg/L, tighter	Apr 1, 2027	1.54 mg/L (11 values)	1.19×
TOWN OF LOGANSPORT	LA0033308	LA	Sewage plant	.4 MGD	BOD, 5-day, 20 deg. C	monthly average 33 lb/d, tighter	Apr 1, 2027	39 lb/d (11 values)	1.18×
BECKER CARL D	PA0052591	PA	Industrial	.05 MGD	Chlorine, total residual	monthly average 0.94 mg/L, tighter	Apr 1, 2027	1.06 mg/L (9 values)	1.13×
SKYTOP LODGE CORP	PA0029874	PA	Industrial	.075 MGD	Copper, total [as Cu]	monthly average 0.058 mg/L, new	Apr 1, 2027	0.0621 mg/L (9 values)	1.07×
REFLECTANCE ENERGY, LLC	WV1013220	WV	Industrial	—	Selenium, total recoverable	monthly average 4.7 ug/L, new	Apr 17, 2027	10.35 ug/L (5 values)	2.2×
REFLECTANCE ENERGY, LLC	WV1013220	WV	Industrial	—	Selenium, total recoverable	monthly maximum 8.2 ug/L, new	Apr 17, 2027	11.43 ug/L (5 values)	1.39×
NATIONAL WATER INFRASTRUCTURE, LLC - SEVEN OAKS FLEA MARKET	LA0122505	LA	Industrial	—	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	May 1, 2027	5 mg/L (9 values)	152×
MAGNOLIA WATER UTILITY OPERATING CO., LLC	LA0126136	LA	Industrial	—	Chlorine, total residual	instantaneous maximum 0.044 mg/L, new	May 1, 2027	5.7 mg/L (9 values)	130×
MAGNOLIA WATER UTILITY OPERATING CO., LLC	LA0126136	LA	Industrial	—	Chlorine, total residual	instantaneous maximum 0.044 mg/L, new	May 1, 2027	5.5 mg/L (9 values)	125×
Plaquemines Parish Government- Parish Government Complex STP	LA0126098	LA	Sewage plant	.1 MGD	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	May 1, 2027	3.37 mg/L (9 values)	102×
NATIONAL WATER INFRASTRUCTURE, LLC - SEVEN OAKS FLEA MARKET	LA0122505	LA	Industrial	—	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	May 1, 2027	3 mg/L (9 values)	90.9×
Chatham Water Utility, LLC	GA0030104	GA	Industrial	.1 MGD	Nitrogen, ammonia total [as N]	monthly average 0.4 mg/L, new	May 1, 2027	8.25 mg/L (10 values)	20.6×
Gloucester County	VA0078778	VA	Industrial	—	Chloride [as Cl]	monthly average 360 mg/L, tighter	May 1, 2027	5017 mg/L (11 values)	13.9×
LAWRENCEVILLE ACQUISITION COMPANY, LLC	PA0255840	PA	Industrial	.277 MGD	Boron, total [as B]	monthly average 1.6 mg/L, new	May 1, 2027	13.54 mg/L (9 values)	8.46×
LAWRENCEVILLE ACQUISITION COMPANY, LLC	PA0255840	PA	Industrial	.277 MGD	Boron, total [as B]	daily maximum 2.5 mg/L, new	May 1, 2027	16.3 mg/L (9 values)	6.52×
LAWRENCEVILLE ACQUISITION COMPANY, LLC	PA0255840	PA	Industrial	.277 MGD	Boron, total [as B]	monthly average 2.49 mg/L, new	May 1, 2027	12.5 mg/L (9 values, 1 below detection)	5.02×
LAWRENCEVILLE ACQUISITION COMPANY, LLC	PA0255840	PA	Industrial	.277 MGD	Boron, total [as B]	daily maximum 3.89 mg/L, new	May 1, 2027	14.3 mg/L (9 values)	3.68×
LAWRENCEVILLE ACQUISITION COMPANY, LLC	PA0255840	PA	Industrial	.277 MGD	Selenium, total [as Se]	monthly average 0.005 mg/L, new	May 1, 2027	0.0142 mg/L (9 values, 4 below detection)	2.84×
LAWRENCEVILLE ACQUISITION COMPANY, LLC	PA0255840	PA	Industrial	.277 MGD	Selenium, total [as Se]	daily maximum 0.0078 mg/L, new	May 1, 2027	0.0178 mg/L (9 values, 4 below detection)	2.28×
Ohio Valley Coal Co	OH0012661	OH	Industrial	—	Solids, total dissolved- 180 deg. C	monthly average 1500 mg/L, new	May 1, 2027	2295 mg/L (6 values)	1.53×
Nelson County Service Authority	VA0089729	VA	Sewage plant	.22 MGD	Copper, total recoverable	maximum weekly average 15 ug/L, new	May 1, 2027	19.6 ug/L (3 values)	1.31×
Chatham Water Utility, LLC	GA0030104	GA	Industrial	.1 MGD	BOD, 5-day, 20 deg. C	monthly average 20 mg/L, tighter	May 1, 2027	25.5 mg/L (10 values)	1.27×
City of Sparks	GA0021563	GA	Sewage plant	.5 MGD	Phosphorus, total [as P]	monthly average 2 mg/L, new	May 1, 2027	2.4 mg/L (9 values)	1.2×
Chatham Water Utility, LLC	GA0030104	GA	Industrial	.1 MGD	BOD, 5-day, 20 deg. C	daily maximum 30 mg/L, tighter	May 1, 2027	33.5 mg/L (10 values)	1.12×
Suncor Energy USA Inc	CO0001147	CO	Industrial, major	3.66 MGD	Selenium, potentially dissolvd	30-day average 9 ug/L, tighter	May 1, 2027	10 ug/L (11 values)	1.11×
Chatham Water Utility, LLC	GA0030104	GA	Industrial	.1 MGD	Phosphorus, total [as P]	monthly average 5 mg/L, new	May 1, 2027	5.35 mg/L (10 values)	1.07×
SCHUYLKILL VALLEY SEW AUTH	PA0064211	PA	Sewage plant	.55 MGD	Copper, total [as Cu]	monthly average 0.13 lb/d, new	Jun 1, 2027	13 lb/d (9 values, 4 below detection)	100×
SCHUYLKILL VALLEY SEW AUTH	PA0064211	PA	Sewage plant	.55 MGD	Copper, total [as Cu]	daily maximum 0.18 lb/d, new	Jun 1, 2027	15 lb/d (9 values)	83.3×
MHJH Properties, LLC - Jackson Point	AR0052884	AR	Industrial	.005 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Jun 1, 2027	0.14 mg/L (3 values)	12.7×
Titanium Metals Corp Toronto Plant	OH0010910	OH	Industrial, major	—	Chlorine, total residual	daily maximum 0.038 mg/L, new	Jun 1, 2027	0.47 mg/L (3 values)	12.4×
Hamler, Village of	OH0021105	OH	Sewage plant	.113 MGD	Mercury, total low level	monthly average 1.3 ng/L, new	Jun 1, 2027	7.18 ng/L (4 values)	5.52×
Eagle Ridge Utility Operating Company, LLC-Eaglebrook Subdivision WWTF	AR0050717	AR	Industrial	.029 MGD	Phosphorus, total [as P]	monthly average 1 mg/L, new	Jun 1, 2027	3.65 mg/L (3 values)	3.65×
Eagle Ridge Utility Operating Company, LLC-Eaglebrook Subdivision WWTF	AR0050717	AR	Industrial	.029 MGD	Phosphorus, total [as P]	daily maximum 1.5 mg/L, new	Jun 1, 2027	4.33 mg/L (3 values)	2.89×
MAXXIM REBUILD CO., LLC	WV0050962	WV	Industrial	.004 MGD	Iron, total recoverable	daily maximum 1.5 mg/L, new	Jun 1, 2027	2.365 mg/L (4 values)	1.58×
WALLACE RUN RD LLC	PA0217999	PA	Industrial	.001 MGD	Chlorine, total residual	instantaneous maximum 0.02 mg/L, tighter	Jun 1, 2027	0.03 mg/L (9 values)	1.5×
POCONO PLATEAU CHRISTIAN ASSN	PA0060721	PA	Industrial	.015 MGD	Chlorine, total residual	monthly average 0.5 mg/L, tighter	Jun 1, 2027	0.7 mg/L (9 values)	1.4×
Nevada School District # 1 - Nevada High School	AR0042439	AR	Industrial	.025 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Jun 1, 2027	0.015 mg/L (3 values, 1 below detection)	1.36×
MUNI AUTH OF WESTMORELAND CNTY	PA0021148	PA	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	monthly average 9.46 ug/L, new	Jun 1, 2027	12 ug/L (9 values)	1.27×
International Paper	GA0001104	GA	Industrial, major	43 MGD	Chlorine, total residual	daily maximum 0.33 mg/L, new	Jun 1, 2027	0.41 mg/L (11 values)	1.24×
Eagle Ridge Utility Operating Company, LLC-Eaglebrook Subdivision WWTF	AR0050717	AR	Industrial	.029 MGD	Phosphorus, total [as P]	monthly average 0.2 lb/d, new	Jun 1, 2027	0.24 lb/d (3 values)	1.2×
MUNI AUTH OF WESTMORELAND CNTY	PA0021148	PA	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	daily maximum 0.18 lb/d, new	Jun 1, 2027	0.21 lb/d (9 values)	1.17×
MUNI AUTH OF WESTMORELAND CNTY	PA0021148	PA	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	monthly average 0.12 lb/d, new	Jun 1, 2027	0.14 lb/d (9 values)	1.17×
Guggisberg Cheese	OH0004367	OH	Industrial	—	Phosphorus, total [as P]	monthly average 10 mg/L, tighter	Jun 1, 2027	11.17 mg/L (11 values)	1.12×
POCONO PLATEAU CHRISTIAN ASSN	PA0060721	PA	Industrial	.015 MGD	Chlorine, total residual	instantaneous maximum 1.6 mg/L, tighter	Jun 1, 2027	1.8 mg/L (9 values)	1.12×
MUNI AUTH OF WESTMORELAND CNTY	PA0021148	PA	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	daily maximum 14.2 ug/L, new	Jun 1, 2027	15 ug/L (9 values)	1.06×
Glen Rose Public School	AR0046817	AR	Industrial	.024 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Jul 1, 2027	1.02 mg/L (3 values)	92.7×
CITY OF BATON ROUGE/PARISH OF EAST BATON ROUGE- LAKE JOLIE VUE SUBD. #306	LA0127754	LA	Industrial	—	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	Jul 1, 2027	2.2 mg/L (9 values)	66.7×
MAGNOLIA WATER UTILITY OPERATING CO., LLC	LA0126225	LA	Industrial	—	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	Jul 1, 2027	1.22 mg/L (9 values)	37×
Town of Dandridge	TN0021245	TN	Sewage plant	.9 MGD	Chlorine, total residual	daily maximum 0.2 mg/L, tighter	Jul 1, 2027	1.3 mg/L (11 values)	6.5×
Arkansas Department of Parks, Heritage, & Tourism - Petit Jean State Park	AR0049972	AR	Industrial	.08 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Jul 1, 2027	0.05 mg/L (11 values)	4.55×
Lanxess Corporation - Central Plant	AR0001171	AR	Industrial, major	—	Lead, total recoverable	monthly average 3.8 ug/L, new	Jul 1, 2027	12 ug/L (9 values)	3.16×
COUNTRY COURT UTILITIY WWTP	IN0045292	IN	Industrial	.064 MGD	Phosphorus, total [as P]	monthly average 1 mg/L, new	Jul 1, 2027	2.9 mg/L (11 values)	2.9×
Rison , City of	AR0021695	AR	Sewage plant	.31 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Jul 1, 2027	0.03 mg/L (8 values, 1 below detection)	2.73×
City of Hoschton	GA0035980	GA	Sewage plant	.2 MGD	Phosphorus, total [as P]	monthly average 1 mg/L, new	Jul 1, 2027	1.82 mg/L (11 values)	1.82×
Cherokee Utilities Authority	OK0045055	OK	Industrial	.135 MGD	Selenium, total [as Se]	monthly average 15.11 ug/L, new	Jul 1, 2027	24 ug/L (11 values)	1.59×
Lanxess Corporation - Central Plant	AR0001171	AR	Industrial, major	—	Lead, total recoverable	daily maximum 7.62 ug/L, new	Jul 1, 2027	12 ug/L (9 values)	1.57×
SHAWVILLE POWER LLC	PA0010031	PA	Industrial, major	6.89 MGD	Thallium, total [as Tl]	daily maximum 4.34 ug/L, new	Jul 1, 2027	6.79 ug/L (8 values, 2 below detection)	1.56×
CITY OF BATON ROUGE/PARISH OF EAST BATON ROUGE- LAKE JOLIE VUE SUBD. #306	LA0127754	LA	Industrial	—	Solids, total suspended	weekly average 23 mg/L, tighter	Jul 1, 2027	32 mg/L (9 values)	1.39×
CITY OF BATON ROUGE/PARISH OF EAST BATON ROUGE- LAKE JOLIE VUE SUBD. #306	LA0127754	LA	Industrial	—	Solids, total suspended	monthly average 15 mg/L, tighter	Jul 1, 2027	20.65 mg/L (9 values)	1.38×
Cherokee Utilities Authority	OK0045055	OK	Industrial	.135 MGD	Selenium, total [as Se]	monthly average 0.016 lb/d, new	Jul 1, 2027	0.022 lb/d (11 values)	1.38×
SUMMIT CORPORATION OF AMERICA	CT0001180	CT	Industrial, major	—	Silver, total [as Ag]	monthly average 11 ug/L, tighter	Jul 1, 2027	15 ug/L (11 values)	1.36×
Lanxess Corporation - Central Plant	AR0001171	AR	Industrial, major	—	Zinc, total recoverable	monthly average 115.62 ug/L, new	Jul 1, 2027	150 ug/L (9 values)	1.3×
Lanxess Corporation - Central Plant	AR0001171	AR	Industrial, major	—	Mercury, total recoverable	monthly average 0.0134 ug/L, new	Jul 1, 2027	0.016 ug/L (11 values)	1.19×
CITY OF BATON ROUGE/PARISH OF EAST BATON ROUGE- LAKE JOLIE VUE SUBD. #306	LA0127754	LA	Industrial	—	BOD, 5-day, 20 deg. C	monthly average 10 mg/L, tighter	Jul 1, 2027	11.75 mg/L (9 values)	1.18×
Cherokee Utilities Authority	OK0045055	OK	Industrial	.135 MGD	Selenium, total [as Se]	daily maximum 21.65 ug/L, new	Jul 1, 2027	25.2 ug/L (11 values)	1.16×
Town of Baileyton	TN0063932	TN	Sewage plant	.2 MGD	Solids, total dissolved	daily maximum 500 mg/L, new	Jul 1, 2027	554 mg/L (11 values)	1.11×
ODFJELL TERMINALS (HOUSTON) INC	TX0089192	TX	Industrial	—	Zinc, total [as Zn]	daily average 0.245 mg/L, new	Jul 1, 2027	0.248 mg/L (9 values)	1.01×
TOWN OF PEARL RIVER MUNICIPAL	LA0075329	LA	Sewage plant	.33 MGD	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	Aug 1, 2027	5.8 mg/L (9 values)	176×
WEST BATON ROUGE PARISH	LA0068501	LA	Sewage plant	.3 MGD	Chlorine, total residual	instantaneous maximum 0.3 mg/L, new	Aug 1, 2027	1.62 mg/L (9 values)	5.4×
Joali Investments I, LLC, d/b/a Malvern Series, LLC - Gateway of Malvern	AR0042889	AR	Industrial	.01 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Aug 1, 2027	0.04 mg/L (3 values, 1 below detection)	3.64×
American Energy Corp	OH0059552	OH	Industrial	—	Solids, total dissolved- 180 deg. C	monthly average 1500 mg/L, new	Aug 1, 2027	3480 mg/L (11 values)	2.32×
American Energy Corp	OH0059552	OH	Industrial	—	Solids, total dissolved- 180 deg. C	monthly average 2232 mg/L, new	Aug 1, 2027	5020 mg/L (11 values)	2.25×
American Energy Corp	OH0059552	OH	Industrial	—	Solids, total dissolved- 180 deg. C	monthly average 1500 mg/L, new	Aug 1, 2027	2730 mg/L (7 values)	1.82×
American Energy Corp	OH0059552	OH	Industrial	—	Solids, total dissolved- 180 deg. C	monthly average 1500 mg/L, new	Aug 1, 2027	2210 mg/L (3 values)	1.47×
American Energy Corp	OH0059552	OH	Industrial	—	Solids, total dissolved- 180 deg. C	monthly average 1500 mg/L, new	Aug 1, 2027	2055 mg/L (6 values)	1.37×
TOWN OF DELMAR	MD0020532	MD	Sewage plant	.85 MGD	Nitrogen, ammonia total [as N]	maximum monthly average 1.5 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), tighter	Aug 1, 2027	1.55 mg/L (6 values)	1.03×
SKANA ALUMINUM COMPANY	WV0116386	WV	Industrial	—	Aluminum, total recoverable	daily maximum 0.75 mg/L, new	Sep 1, 2027	2.92 mg/L (4 values)	3.89×
Lakeshore Management, INC	MD0024546	MD	Sewage plant	.1125 MGD	Nitrogen, ammonia total [as N]	maximum monthly average 1 mg/L (May–Oct), tighter	Sep 1, 2027	3 mg/L (3 values)	3×
Plain City, Village of	OH0027057	OH	Sewage plant	1.25 MGD	Solids, total dissolved- 180 deg. C	monthly average 891 mg/L, new	Sep 1, 2027	1670 mg/L (11 values)	1.87×
SALINA, CITY OF	KS0038474	KS	Sewage plant, major	—	Nitrite + Nitrate total [as N]	daily average 10 mg/L, new	Sep 1, 2027	16.46 mg/L (11 values)	1.65×
Lakeshore Management, INC	MD0024546	MD	Sewage plant	.1125 MGD	Nitrogen, ammonia total [as N]	maximum monthly average 1.4 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), tighter	Sep 1, 2027	2.2 mg/L (4 values)	1.57×
ARMSTRONG CNTY IND DEV AUTH	PA0218138	PA	Sewage plant	.4 MGD	Copper, total [as Cu]	weekly average 0.016 mg/L, new	Sep 1, 2027	0.025 mg/L (8 values)	1.56×
TMS INTL LLC	PA0253553	PA	Industrial	.05 MGD	Boron, total [as B]	monthly average 1634 ug/L, new	Sep 1, 2027	2470 ug/L (9 values)	1.51×
SABINE PARISH POLICE JURY	LA0070904	LA	Sewage plant, major	—	Phenolics, total recoverable	monthly average 0.005 mg/L, new	Sep 1, 2027	0.007 mg/L (3 values)	1.4×
ARMSTRONG CNTY IND DEV AUTH	PA0218138	PA	Sewage plant	.4 MGD	Copper, total [as Cu]	monthly average 0.011 mg/L, new	Sep 1, 2027	0.014 mg/L (8 values, 2 below detection)	1.27×
Maryland Environmental Service (MES)	MD0063207	MD	Sewage plant, major	2 MGD	Nitrogen, ammonia total [as N]	maximum daily average 2.3 mg/L (Apr–Oct), tighter	Sep 1, 2027	2.75 mg/L (6 values)	1.2×
SALINA, CITY OF	KS0038474	KS	Sewage plant, major	—	Phosphorus, Total As P	DG 60.6 lb/d, new	Sep 1, 2027	69.71 lb/d (11 values)	1.15×
Jackson County Water & Sewerage Authority	GA0002712	GA	Sewage plant	.8 MGD	Phosphorus, total [as P]	monthly average 0.4 mg/L, tighter	Sep 1, 2027	0.42 mg/L (11 values)	1.05×
TMS INTL LLC	PA0253553	PA	Industrial	.05 MGD	Boron, total [as B]	daily maximum 2549 ug/L, new	Sep 1, 2027	2590 ug/L (9 values)	1.02×
Perryville, City of	AR0020125	AR	Sewage plant	.15 MGD	Chlorine, total residual	instantaneous maximum 0.02 mg/L, new	Oct 1, 2027	1.53 mg/L (11 values)	76.5×
DUSON, TOWN OF	LA0055085	LA	Sewage plant	.215 MGD	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	Oct 1, 2027	1.25 mg/L (9 values)	37.9×
TOWN OF KINDER	LA0020605	LA	Sewage plant	.97 MGD	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	Oct 1, 2027	0.74 mg/L (9 values)	22.4×
Harbor South Improvement District #1 of Montgomery County	AR0042293	AR	Sewage plant	.036 MGD	Chlorine, total residual	instantaneous maximum 0.191 mg/L, new	Oct 1, 2027	2.2 mg/L (3 values)	11.5×
Federal-Mogul Powertrain LLC	MI0002836	MI	Industrial, major	—	Chlorine, total residual	daily maximum 38 ug/L, new	Oct 1, 2027	430 ug/L (11 values)	11.3×
CHEMSTREAM, INC	WV0117269	WV	Industrial	—	Aluminum, total recoverable	daily maximum 0.75 mg/L, new	Oct 1, 2027	5.93 mg/L (3 values)	7.91×
CHEMSTREAM, INC	WV0117269	WV	Industrial	—	Iron, total recoverable	daily maximum 1.5 mg/L, new	Oct 1, 2027	11.8 mg/L (3 values)	7.87×
Dover Chemical Corporation	OH0007269	OH	Industrial, major	—	.alpha.-BHC dissolved	monthly average 0.0039 ug/L, tighter	Oct 1, 2027	0.026 ug/L (11 values)	6.67×
Dover Chemical Corporation	OH0007269	OH	Industrial, major	—	.alpha.-BHC dissolved	monthly average 0.000075 kg/d, tighter	Oct 1, 2027	0.000428 kg/d (11 values)	5.71×
CHEMSTREAM, INC	WV0117269	WV	Industrial	—	Iron, total recoverable	daily maximum 1.5 mg/L, new	Oct 1, 2027	8.44 mg/L (3 values)	5.63×
WASHINGTON PARISH GOVERNMENT	LA0068101	LA	Sewage plant	—	Solids, total dissolved	monthly average 496 mg/L, new	Oct 1, 2027	2560 mg/L (3 values)	5.16×
CHEMSTREAM, INC	WV0117269	WV	Industrial	—	Iron, total recoverable	daily maximum 1.5 mg/L, new	Oct 1, 2027	5.35 mg/L (3 values)	3.57×
CHEMSTREAM, INC	WV0117269	WV	Industrial	—	Zinc, total recoverable	daily maximum 0.12 mg/L, new	Oct 1, 2027	0.37 mg/L (3 values)	3.08×
ROOF GARDEN MHC LLC	PA0095851	PA	Industrial	.013 MGD	Chlorine, total residual	monthly average 0.11 mg/L, tighter	Oct 1, 2027	0.31 mg/L (9 values)	2.82×
CHEMSTREAM, INC	WV0117269	WV	Industrial	—	Aluminum, total recoverable	daily maximum 0.75 mg/L, new	Oct 1, 2027	1.93 mg/L (3 values)	2.57×
SHADE CTL CITY JT AUTH	PA0025810	PA	Sewage plant	.85 MGD	Chlorine, total residual	monthly average 0.153 mg/L, tighter	Oct 1, 2027	0.36 mg/L (9 values)	2.35×
WASHINGTON PARISH GOVERNMENT	LA0068101	LA	Sewage plant	—	Solids, total dissolved	daily maximum 1181 mg/L, new	Oct 1, 2027	2560 mg/L (3 values)	2.17×
ROOF GARDEN MHC LLC	PA0095851	PA	Industrial	.013 MGD	Chlorine, total residual	instantaneous maximum 0.359 mg/L, tighter	Oct 1, 2027	0.48 mg/L (9 values)	1.34×
State of California Department of Parks and Recreation	CA0085332	CA	Industrial	—	Manganese, total recoverable	monthly average 72 ug/L, tighter	Oct 13, 2027	1105 ug/L (4 values)	15.3×
State of California Department of Parks and Recreation	CA0085332	CA	Industrial	—	Manganese, total recoverable	daily maximum 130 ug/L, tighter	Oct 13, 2027	1104 ug/L (4 values)	8.5×
State of California Department of Parks and Recreation	CA0085332	CA	Industrial	—	Aluminum, total recoverable	monthly average 94 ug/L, tighter	Oct 13, 2027	355 ug/L (9 values)	3.78×
State of California Department of Parks and Recreation	CA0085332	CA	Industrial	—	Iron, total recoverable	monthly average 710 ug/L, tighter	Oct 13, 2027	2000 ug/L (9 values)	2.82×
State of California Department of Parks and Recreation	CA0085332	CA	Industrial	—	Nickel, total recoverable	monthly average 14 ug/L, tighter	Oct 13, 2027	38 ug/L (6 values)	2.71×
State of California Department of Parks and Recreation	CA0085332	CA	Industrial	—	Copper, total recoverable	monthly average 1.3 ug/L, tighter	Oct 13, 2027	2.5 ug/L (6 values)	1.92×
State of California Department of Parks and Recreation	CA0085332	CA	Industrial	—	Nickel, total recoverable	daily maximum 26 ug/L, tighter	Oct 13, 2027	38 ug/L (6 values)	1.46×
State of California Department of Parks and Recreation	CA0085332	CA	Industrial	—	Aluminum, total recoverable	daily maximum 290 ug/L, tighter	Oct 13, 2027	355 ug/L (9 values)	1.22×
Weiner, City of	AR0020354	AR	Sewage plant	.6 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Nov 1, 2027	3.5 mg/L (11 values)	318×
MAGNOLIA WATER UTILITY OPERATING CO., LLC	LA0073148	LA	Industrial	—	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	Nov 1, 2027	1.64 mg/L (9 values)	49.7×
MAGNOLIA WATER UTILITY OPERATING CO., LLC	LA0124265	LA	Industrial	—	Chlorine, total residual	instantaneous maximum 0.66 mg/L, new	Nov 1, 2027	4.6 mg/L (9 values)	6.97×
Gibsonburg WWTP	OH0029122	OH	Sewage plant	.5 MGD	Phosphorus, total [as P]	monthly average 1 mg/L, new	Nov 1, 2027	2.5 mg/L (11 values)	2.5×
GEORGIA-PACIFIC WOOD PRODUCTS LLC	TX0006076	TX	Industrial	.01 MGD	Zinc, total [as Zn]	daily maximum 0.443 mg/L, new	Nov 1, 2027	1.105 mg/L (4 values)	2.49×
HALSTEAD, CITY OF	KS0026263	KS	Sewage plant	—	Phosphorus, Total As P	DG 3.51 lb/d, new	Nov 1, 2027	4.99 lb/d (11 values)	1.42×
Pilot Travel Centers LLC	VA0092657	VA	Industrial	—	Nitrogen, ammonia total [as N]	daily maximum 1 mg/L, new	Dec 1, 2027	96.1 mg/L (3 values)	96.1×
Pilot Travel Centers LLC	VA0092657	VA	Industrial	—	Nitrogen, ammonia total [as N]	monthly average 1 mg/L, new	Dec 1, 2027	96.1 mg/L (3 values)	96.1×
DUQUOIN, CITY OF	IL0028517	IL	Sewage plant, major	6 MGD	Coliform, fecal general	daily maximum 400 #/100mL (May–Oct), new	Dec 1, 2027	6075 #/100mL (4 values)	15.2×
City of Madison	GA0023141	GA	Sewage plant	.66 MGD	Phosphorus, total [as P]	monthly average 0.76 mg/L, new	Dec 1, 2027	3.85 mg/L (10 values)	5.07×
APPALACHIAN POWER COMPANY	WV0078875	WV	Industrial	.933 MGD	Copper, total recoverable	monthly average 0.009 mg/L, new	Dec 1, 2027	0.0326 mg/L (9 values)	3.62×
Village of Woodville	OH0020591	OH	Sewage plant	.3 MGD	Phosphorus, total [as P]	monthly average 1 mg/L, new	Dec 1, 2027	3.32 mg/L (11 values)	3.32×
City of Gladstone	MI0057676	MI	Sewage plant, major	—	Chlorine, total residual	daily maximum 38 ug/L, tighter	Dec 1, 2027	81 ug/L (11 values)	2.13×
MCCANDLESS TWP SANI AUTH ALLEGHENY CNTY	PA0028193	PA	Sewage plant	.094 MGD	Copper, total [as Cu]	monthly average 10.1 ug/L, tighter	Dec 1, 2027	18.5 ug/L (9 values, 1 below detection)	1.83×
HARTREE CHANNELVIEW LLC	TX0136573	TX	Industrial	—	Zinc, total [as Zn]	daily average 0.15 mg/L, new	Dec 1, 2027	0.26 mg/L (11 values)	1.73×
SHERWOOD IMPROVEMENT DISTRICT (WWTP)	KS0117731	KS	Sewage plant, major	—	Phosphorus, Total As P	DG 20.05 lb/d, new	Dec 1, 2027	33.45 lb/d (11 values)	1.67×
FAITH BLDR ED PROGRAMS INC	PA0035505	PA	Industrial	.018 MGD	Chlorine, total residual	monthly average 0.2 mg/L, tighter	Dec 1, 2027	0.3 mg/L (9 values)	1.5×
MCCANDLESS TWP SANI AUTH ALLEGHENY CNTY	PA0028193	PA	Sewage plant	.094 MGD	Copper, total [as Cu]	daily maximum 17 ug/L, tighter	Dec 1, 2027	23 ug/L (9 values, 1 below detection)	1.35×
HARTREE CHANNELVIEW LLC	TX0136573	TX	Industrial	—	Zinc, total [as Zn]	daily maximum 0.318 mg/L, new	Dec 1, 2027	0.4 mg/L (11 values)	1.26×
MCCANDLESS TWP SANI AUTH ALLEGHENY CNTY	PA0028193	PA	Sewage plant	.094 MGD	Copper, total [as Cu]	monthly average 0.008 lb/d, tighter	Dec 1, 2027	0.01 lb/d (9 values, 1 below detection)	1.25×
APPALACHIAN POWER COMPANY	WV0078875	WV	Industrial	.933 MGD	Copper, total recoverable	daily maximum 0.027 mg/L, new	Dec 1, 2027	0.0326 mg/L (9 values)	1.21×
Madison, City of	GA0038741	GA	Sewage plant, major	1 MGD	Phosphorus, total [as P]	weekly average 0.75 mg/L, tighter	Dec 1, 2027	0.9 mg/L (11 values)	1.2×
FAITH BLDR ED PROGRAMS INC	PA0035505	PA	Industrial	.018 MGD	Chlorine, total residual	instantaneous maximum 0.7 mg/L, tighter	Dec 1, 2027	0.76 mg/L (9 values)	1.09×
SLATINGTON JT CLIENT	PA0020176	PA	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	daily maximum 51.4 ug/L, new	Dec 31, 2027	71 ug/L (9 values)	1.38×
SLATINGTON JT CLIENT	PA0020176	PA	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	monthly average 43.2 ug/L, new	Dec 31, 2027	59.5 ug/L (9 values)	1.38×
MAGNOLIA WATER UTILITY OPERATING CO., LLC	LA0072265	LA	Industrial	—	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	Jan 1, 2028	2.2 mg/L (10 values)	66.7×
Marden, LLC (formerly ROCO LLC) DBA Cedar Hill Resort	TN0058033	TN	Industrial	.01 MGD	Chlorine, total residual	daily maximum 0.019 mg/L, tighter	Jan 1, 2028	0.43 mg/L (11 values)	22.6×
Pilot Travel Centers LLC	VA0092762	VA	Industrial	—	Nitrogen, ammonia total [as N]	daily maximum 0.33 mg/L, new	Jan 1, 2028	7.33 mg/L (3 values)	22.2×
Pilot Travel Centers LLC	VA0092762	VA	Industrial	—	Nitrogen, ammonia total [as N]	monthly average 0.33 mg/L, new	Jan 1, 2028	7.33 mg/L (3 values)	22.2×
BALL, TOWN OF	LA0079545	LA	Sewage plant	.75 MGD	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	Jan 1, 2028	0.61 mg/L (9 values)	18.5×
CAMDEN CNTY MUA	NJ0026182	NJ	Sewage plant, major	185 MGD	Chlorine produced oxidants	monthly average 0.04 mg/L, new	Jan 1, 2028	0.64 mg/L (9 values)	16×
CAMDEN CNTY MUA	NJ0026182	NJ	Sewage plant, major	185 MGD	Chlorine produced oxidants	daily maximum 0.07 mg/L, new	Jan 1, 2028	0.82 mg/L (9 values)	11.7×
Grantsville, Town of	MD0020761	MD	Sewage plant	.6 MGD	Nitrogen, ammonia total [as N]	maximum monthly average 2 mg/L (May–Oct), tighter	Jan 1, 2028	21.01 mg/L (5 values)	10.5×
Grantsville, Town of	MD0020761	MD	Sewage plant	.6 MGD	Nitrogen, ammonia total [as N]	maximum monthly average 10 lb/d (May–Oct), tighter	Jan 1, 2028	84.46 lb/d (5 values)	8.45×
HILL'S PET NUTRITION, INC.	KS0003077	KS	Industrial	—	Phosphorus, Total As P	DG 1.14 lb/d, new	Jan 1, 2028	5.089 lb/d (11 values)	4.46×
Grantsville, Town of	MD0020761	MD	Sewage plant	.6 MGD	Nitrogen, ammonia total [as N]	maximum daily average 35 lb/d (May–Oct), tighter	Jan 1, 2028	134.5 lb/d (5 values)	3.84×
Grantsville, Town of	MD0020761	MD	Sewage plant	.6 MGD	Nitrogen, ammonia total [as N]	maximum daily average 6.9 mg/L (May–Oct), tighter	Jan 1, 2028	25.6 mg/L (5 values)	3.71×
Lakeland, City of	GA0021296	GA	Sewage plant	.5 MGD	Phosphorus, total [as P]	monthly average 1 mg/L, new	Jan 1, 2028	3.5 mg/L (11 values)	3.5×
Village of Fort Recovery	OH0025160	OH	Sewage plant	.25 MGD	E. coli, MTEC-MF	monthly geometric mean 126 MPN/100mL (May–Oct), new	Jan 1, 2028	405.8 MPN/100mL (5 values)	3.22×
SLC WATER RECLAMATION FACILITY	UT0021725	UT	Sewage plant, major	56 MGD	Nitrogen, ammonia total [as N]	maximum monthly average 5.8 mg/L (Mar–May), tighter	Jan 1, 2028	14 mg/L (3 values)	2.41×
City of Thomaston	GA0020079	GA	Sewage plant, major	2 MGD	Copper, total recoverable	monthly average 7.6 ug/L, new	Jan 1, 2028	16.4 ug/L (4 values)	2.16×
Thomas Steel Strip Corporation	OH0011363	OH	Industrial, major	—	Zinc, total recoverable	daily maximum 330 ug/L, new	Jan 1, 2028	633 ug/L (11 values)	1.92×
LAWRENCE, CITY OF	KS0038644	KS	Sewage plant, major	—	Phosphorus, Total As P	DG 104.4 lb/d, new	Jan 1, 2028	188 lb/d (11 values)	1.8×
MUNI AUTH OF WESTMORELAND CNTY	PA0035246	PA	Industrial	1.3 MGD	Chlorine, total residual	monthly average 0.26 mg/L, tighter	Jan 1, 2028	0.445 mg/L (10 values)	1.71×
GRAND RONDE SANITARY DISTRICT	OR0031453	OR	Sewage plant	.38 MGD	Chlorine, total residual	daily maximum 0.05 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), tighter	Jan 1, 2028	0.08 mg/L (6 values)	1.6×
MADISON CHATHAM JOINT MEETING	NJ0024937	NJ	Sewage plant, major	3.5 MGD	Dichlorobromomethane	monthly average 5.2 ug/L, new	Jan 1, 2028	7.8 ug/L (10 values, 2 below detection)	1.5×
US ARMY CORPS OF ENGINEERS, BONNEVILLE LOCK AND DAM	OR0022624	OR	Federal	—	Chlorine, total residual	monthly average 0.42 mg/L, new	Jan 1, 2028	0.6 mg/L (11 values)	1.43×
MUNI AUTH OF WESTMORELAND CNTY	PA0035246	PA	Industrial	1.3 MGD	Chlorine, total residual	daily maximum 0.4 mg/L, tighter	Jan 1, 2028	0.535 mg/L (10 values)	1.34×
MADISON CHATHAM JOINT MEETING	NJ0024937	NJ	Sewage plant, major	3.5 MGD	Nitrogen, nitrate total [as N]	monthly average 24 mg/L, new	Jan 1, 2028	29.5 mg/L (10 values)	1.23×
City of Thomaston	GA0030121	GA	Sewage plant, major	2 MGD	Copper, total recoverable	monthly average 7.6 ug/L, new	Jan 1, 2028	9.2 ug/L (11 values)	1.21×
MOUNT OLIVE TWP	NJ0021954	NJ	Sewage plant	.5 MGD	Chlorine produced oxidants	daily maximum 0.03 mg/L, tighter	Jan 1, 2028	0.035 mg/L (8 values)	1.17×
MADISON CHATHAM JOINT MEETING	NJ0024937	NJ	Sewage plant, major	3.5 MGD	Nitrogen, nitrate total [as N]	daily maximum 29 mg/L, new	Jan 1, 2028	31.9 mg/L (10 values)	1.1×
NATIONAL WATER INFRASTRUCTURE, LLC - OLE HOMESTEAD/KEYSTONE WWTP	LA0126802	LA	Industrial	—	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	Feb 1, 2028	3 mg/L (9 values)	90.9×
CITY OF BATON ROUGE/PARISH OF EBR - PLEASANT PARK SUBDIVISION #357	LA0127763	LA	Industrial	—	Chlorine, total residual	instantaneous maximum 0.033 mg/L, new	Feb 1, 2028	2.2 mg/L (9 values)	66.7×
GREGG TWP SEW AUTH CENTRE CNTY	PA0115266	PA	Sewage plant	.09 MGD	Chlorine, total residual	instantaneous maximum 0.02 mg/L, tighter	Feb 1, 2028	0.18 mg/L (8 values)	9×
Pittsylvania County Schools	VA0027693	VA	Sewage plant	.012 MGD	Nitrogen, ammonia total [as N]	monthly average 1.6 mg/L, tighter	Feb 1, 2028	2.8 mg/L (9 values)	1.75×
GERDAU	IA0061972	IA	Industrial	—	Copper, total [as Cu]	daily maximum 0.0303 mg/L, tighter	Feb 1, 2028	0.038 mg/L (11 values)	1.25×
PLAINFIELD SOUTH WWTP, TOWN OF	IN0062456	IN	Sewage plant, major	4 MGD	Chloride [as Cl]	monthly average 360 mg/L, tighter	Feb 1, 2028	370 mg/L (11 values)	1.03×
PA AMER WATER CO	PA0060097	PA	Industrial, major	1.25 MGD	Selenium, total [as Se]	monthly average 0.06 lb/d, new	Mar 1, 2028	7.01 lb/d (9 values, 4 below detection)	117×
FOREMARK PERFORMANCE CHEMICALS INC	TX0122335	TX	Industrial	.6 MGD	Zinc, total [as Zn]	daily average 0.25 mg/L, new	Mar 1, 2028	27.8 mg/L (11 values)	111×
PA AMER WATER CO	PA0060097	PA	Industrial, major	1.25 MGD	Selenium, total [as Se]	daily maximum 0.083 lb/d, new	Mar 1, 2028	7.01 lb/d (9 values, 4 below detection)	84.5×
FOREMARK PERFORMANCE CHEMICALS INC	TX0122335	TX	Industrial	.6 MGD	Zinc, total [as Zn]	daily maximum 0.53 mg/L, new	Mar 1, 2028	43.1 mg/L (11 values)	81.3×
LBR ACQUISITION CO LLC	PA0027481	PA	Industrial, major	3.715 MGD	Arsenic, total [as As]	daily maximum 0.016 mg/L, new	Mar 1, 2028	0.098 mg/L (3 values)	6.12×
LBR ACQUISITION CO LLC	PA0027481	PA	Industrial, major	3.715 MGD	Arsenic, total [as As]	quarterly average 0.01 mg/L, new	Mar 1, 2028	0.0554 mg/L (3 values)	5.54×
Randall Christy - Statue Road Inn	AR0044300	AR	Industrial	.0075 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Mar 1, 2028	0.04 mg/L (4 values, 1 below detection)	3.64×
JOHN DEERE DUBUQUE WORKS	IA0000051	IA	Industrial, major	.36 MGD	Chlorine, total residual	daily maximum 0.024 mg/L, tighter	Mar 1, 2028	0.05 mg/L (11 values)	2.08×
JOHN DEERE DUBUQUE WORKS	IA0000051	IA	Industrial, major	.36 MGD	Chlorine, total residual	daily maximum 0.024 mg/L, tighter	Mar 1, 2028	0.04 mg/L (11 values)	1.67×
JOHN DEERE DUBUQUE WORKS	IA0000051	IA	Industrial, major	.36 MGD	Chlorine, total residual	30-day average 0.024 mg/L, tighter	Mar 1, 2028	0.0275 mg/L (11 values)	1.15×
Huntsman Advanced Materials Americas, LLC.	OH0029149	OH	Industrial, major	—	Copper, total recoverable	monthly average 15 ug/L (Mar, Jun, Sep, Dec), new	Mar 1, 2028	16.9 ug/L (3 values)	1.13×
JOHN DEERE DUBUQUE WORKS	IA0000051	IA	Industrial, major	.36 MGD	Chlorine, total residual	daily maximum 0.015 lb/d, tighter	Mar 1, 2028	0.01534 lb/d (11 values)	1.02×
Bradford, City of	AR0050911	AR	Sewage plant	.2 MGD	Chlorine, total residual	instantaneous maximum 0.011 mg/L, new	Apr 1, 2028	2.59 mg/L (9 values)	235×
Mazeppa city of	MN0046752	MN	Sewage plant	.083 MGD	Phosphorus, total [as P]	monthly average 1 mg/L, new	Apr 1, 2028	5.05 mg/L (12 values)	5.05×
INV Nylon Chemicals Americas, LLC	SC0002585	SC	Industrial, major	—	Copper, total [as Cu]	monthly average 0.011 mg/L, new	Apr 1, 2028	0.043 mg/L (3 values)	3.91×
AMPHENOL CORPORATION	NY0003824	NY	Industrial, major	—	Zinc, total [as Zn]	daily maximum 181 ug/L, new	Apr 1, 2028	648 ug/L (11 values)	3.58×
INV Nylon Chemicals Americas, LLC	SC0002585	SC	Industrial, major	—	Copper, total [as Cu]	daily maximum 0.014 mg/L, new	Apr 1, 2028	0.043 mg/L (3 values)	3.07×
Mazeppa city of	MN0046752	MN	Sewage plant	.083 MGD	Phosphorus, total [as P]	monthly average 0.32 kg/d, new	Apr 1, 2028	0.93 kg/d (11 values)	2.91×
INV Nylon Chemicals Americas, LLC	SC0002585	SC	Industrial, major	—	Lead, total [as Pb]	monthly average 0.0038 mg/L, new	Apr 1, 2028	0.011 mg/L (3 values)	2.89×
AMPHENOL CORPORATION	NY0003824	NY	Industrial, major	—	Nickel, total [as Ni]	daily maximum 114 ug/L, new	Apr 1, 2028	281 ug/L (11 values)	2.46×
AMPHENOL CORPORATION	NY0003824	NY	Industrial, major	—	Cadmium, total [as Cd]	daily maximum 5 ug/L, new	Apr 1, 2028	10 ug/L (11 values, 3 below detection)	2×
INV Nylon Chemicals Americas, LLC	SC0002585	SC	Industrial, major	—	Zinc, total [as Zn]	daily maximum 0.18 mg/L, new	Apr 1, 2028	0.265 mg/L (3 values)	1.47×
INV Nylon Chemicals Americas, LLC	SC0002585	SC	Industrial, major	—	Zinc, total [as Zn]	monthly average 0.18 mg/L, new	Apr 1, 2028	0.265 mg/L (3 values)	1.47×

The 300 soonest limits are listed, plants already above them first; all 10436 are in the JSON at /dmr/data/upcoming.json.

Each limit is one EPA's ICIS-NPDES file holds on the permit's current version with a begin date after today, enforceable and numeric, either on a parameter the outfall was never limited on (new) or lower than the limit in force (tighter). Today's median is the plant's own reported values for the same outfall, statistic and unit between Oct 1, 2025 and Sep 30, 2026, with how many; none is shown where most were below a detection limit. Read the permit before relying on a value.

Sell to these plants? The list for your states every week, with every plant over a limit on your pollutant, as a spreadsheet, by API and by email when a new one appears: ask for the plant list, or write to info@passage-data.com. What a seller gets.

For programs and AI agents: a state's permits with these limits as JSON at /api/v1/permits?state=OH&upcoming=true, narrowed with &facility_type=potw or &min_flow_mgd=1; the whole list at /dmr/data/upcoming.json; or add https://passage-data.com/mcp as a remote MCP server (tool list_permits). Free, no key. llms.txt

From EPA's ECHO data, not the permit document itself: your permit is the final word. All states

Plants facing new discharge limits — by state and pollutant