for Copper, total [as Cu]: 85 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Nov 1, 2026 and Jul 1, 2031 (299 limits); 15 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: PA 48 · IA 9 · TX 8 · LA 7 · OK 5 · SC 5 · CT 1 · GA 1 · MN 1

Plant	Permit	State	Type	Design flow	Parameter	New limit	Effective	Today's median	× limit
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×
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×
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×
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×
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×
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×
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×
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×
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×
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×
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×
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×
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×
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×
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×
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×
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×
WASHINGTON TWP MUNI AUTH CLARION CNTY	PA0023591	PA	Sewage plant	.085 MGD	Copper, total [as Cu]	monthly average 0.011 lb/d, new	Aug 1, 2028	7 lb/d (9 values)	636×
WASHINGTON TWP MUNI AUTH CLARION CNTY	PA0023591	PA	Sewage plant	.085 MGD	Copper, total [as Cu]	weekly average 0.017 lb/d, new	Aug 1, 2028	9 lb/d (9 values)	529×
WASHINGTON TWP MUNI AUTH CLARION CNTY	PA0023591	PA	Sewage plant	.085 MGD	Copper, total [as Cu]	monthly average 16.4 ug/L, new	Aug 1, 2028	33.9 ug/L (9 values)	2.07×
WASHINGTON TWP MUNI AUTH CLARION CNTY	PA0023591	PA	Sewage plant	.085 MGD	Copper, total [as Cu]	weekly average 24.6 ug/L, new	Aug 1, 2028	34.5 ug/L (9 values)	1.4×
MARY D COMM ASSN	PA0062855	PA	Industrial	.002 MGD	Copper, total [as Cu]	daily maximum 0.0001 lb/d, new	Sep 1, 2028	0.0003 lb/d (10 values)	3×
MARY D COMM ASSN	PA0062855	PA	Industrial	.002 MGD	Copper, total [as Cu]	monthly average 0.00007 lb/d, new	Sep 1, 2028	0.0002 lb/d (10 values, 1 below detection)	2.86×
MARY D COMM ASSN	PA0062855	PA	Industrial	.002 MGD	Copper, total [as Cu]	daily maximum 0.009 mg/L, new	Sep 1, 2028	0.02 mg/L (10 values)	2.22×
MARY D COMM ASSN	PA0062855	PA	Industrial	.002 MGD	Copper, total [as Cu]	monthly average 0.01 mg/L, new	Sep 1, 2028	0.02 mg/L (10 values, 1 below detection)	2×
NORTH AMER HOGANAS INC	PA0110655	PA	Industrial	1.42 MGD	Copper, total [as Cu]	monthly average 0.21 mg/L, new	Apr 1, 2029	0.73 mg/L (3 values)	3.48×
NORTH AMER HOGANAS INC	PA0110655	PA	Industrial	1.42 MGD	Copper, total [as Cu]	daily maximum 0.33 mg/L, new	Apr 1, 2029	0.91 mg/L (3 values)	2.76×
AQUA PA WASTEWATER INC	PA0061204	PA	Industrial	.4 MGD	Copper, total [as Cu]	monthly average 0.012 mg/L, new	Jun 1, 2029	0.093 mg/L (9 values, 2 below detection)	7.75×
AQUA PA WASTEWATER INC	PA0061204	PA	Industrial	.4 MGD	Copper, total [as Cu]	monthly average 0.04 lb/d, new	Jun 1, 2029	0.094 lb/d (9 values, 2 below detection)	2.35×
RINGTOWN BORO SEW AUTH SCHUYLKILL CNTY	PA0043044	PA	Sewage plant	.125 MGD	Copper, total [as Cu]	monthly average 0.022 mg/L, new	Nov 1, 2029	0.0542 mg/L (7 values)	2.46×
RINGTOWN BORO SEW AUTH SCHUYLKILL CNTY	PA0043044	PA	Sewage plant	.125 MGD	Copper, total [as Cu]	daily maximum 0.036 lb/d, new	Nov 1, 2029	0.08 lb/d (7 values)	2.22×
RINGTOWN BORO SEW AUTH SCHUYLKILL CNTY	PA0043044	PA	Sewage plant	.125 MGD	Copper, total [as Cu]	monthly average 0.023 lb/d, new	Nov 1, 2029	0.05 lb/d (7 values)	2.17×
RINGTOWN BORO SEW AUTH SCHUYLKILL CNTY	PA0043044	PA	Sewage plant	.125 MGD	Copper, total [as Cu]	daily maximum 0.034 mg/L, new	Nov 1, 2029	0.0584 mg/L (7 values)	1.72×
Heavener UA-Industrial Park	OK0038849	OK	Industrial, major	—	Copper, total [as Cu]	monthly average 0.11 lb/d, new	Nov 1, 2026	0.028 lb/d (11 values)	0.255×
Heavener UA-Industrial Park	OK0038849	OK	Industrial, major	—	Copper, total [as Cu]	daily maximum 0.134 lb/d, new	Nov 1, 2026	0.03 lb/d (11 values)	0.224×
Heavener UA-Industrial Park	OK0038849	OK	Industrial, major	—	Copper, total [as Cu]	monthly average 4 mg/L, new	Nov 1, 2026	0.002 mg/L (11 values)	0.0005×
Heavener UA-Industrial Park	OK0038849	OK	Industrial, major	—	Copper, total [as Cu]	daily maximum 4.88 mg/L, new	Nov 1, 2026	0.0022 mg/L (11 values)	0.000451×
COLETO CREEK POWER, LLC	TX0070068	TX	Industrial, major	557 MGD	Copper, total [as Cu]	daily average 0.5 mg/L, new	Nov 1, 2026	under 3 values	—
COLETO CREEK POWER, LLC	TX0070068	TX	Industrial, major	557 MGD	Copper, total [as Cu]	daily maximum 1 mg/L, new	Nov 1, 2026	under 3 values	—
TOMBALL, CITY OF	TX0117595	TX	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	daily average 0.017 mg/L, new	Dec 1, 2026	0.004 mg/L (11 values)	0.235×
TOMBALL, CITY OF	TX0117595	TX	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	daily average 0.21 lb/d, new	Dec 1, 2026	0.036 lb/d (11 values)	0.171×
TOMBALL, CITY OF	TX0117595	TX	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	daily maximum 0.036 mg/L, new	Dec 1, 2026	0.00463 mg/L (11 values)	0.129×
SHELL CHEMICAL LP	TX0004863	TX	Industrial, major	9.9 MGD	Copper, total [as Cu]	daily average 0.01 mg/L, tighter	Dec 1, 2026	0 mg/L (6 values)	0×
SHELL CHEMICAL LP	TX0004863	TX	Industrial, major	9.9 MGD	Copper, total [as Cu]	daily average 0.011 mg/L, tighter	Dec 1, 2026	under 3 values	—
SHELL CHEMICAL LP	TX0004863	TX	Industrial, major	9.9 MGD	Copper, total [as Cu]	daily maximum 0.023 mg/L, tighter	Dec 1, 2026	under 3 values	—
SHELL CHEMICAL LP	TX0004863	TX	Industrial, major	9.9 MGD	Copper, total [as Cu]	daily maximum 0.021 mg/L, tighter	Dec 1, 2026	0.01 mg/L (6 values, 5 below detection)	—
HARFORD TWP SUSQUEHANNA CNTY	PA0063100	PA	Sewage plant	.05 MGD	Copper, total [as Cu]	daily maximum 43.6 ug/L, new	Jan 1, 2027	38.7 ug/L (9 values)	0.888×
HARFORD TWP SUSQUEHANNA CNTY	PA0063100	PA	Sewage plant	.05 MGD	Copper, total [as Cu]	monthly average 0.012 lb/d, new	Jan 1, 2027	0.0058 lb/d (9 values)	0.483×
HARFORD TWP SUSQUEHANNA CNTY	PA0063100	PA	Sewage plant	.05 MGD	Copper, total [as Cu]	daily maximum 0.018 lb/d, new	Jan 1, 2027	0.0058 lb/d (9 values)	0.322×
CANONSBURG HOUSTON JT AUTH	PA0025941	PA	Sewage plant, major	14.4 MGD	Copper, total [as Cu]	daily maximum 25.4 ug/L, new	Feb 1, 2027	16 ug/L (9 values)	0.63×
CANONSBURG HOUSTON JT AUTH	PA0025941	PA	Sewage plant, major	14.4 MGD	Copper, total [as Cu]	monthly average 18.5 ug/L, new	Feb 1, 2027	11.5 ug/L (9 values)	0.622×
CANONSBURG HOUSTON JT AUTH	PA0025941	PA	Sewage plant, major	14.4 MGD	Copper, total [as Cu]	monthly average 1.3 lb/d, new	Feb 1, 2027	0.3 lb/d (9 values)	0.231×
CANONSBURG HOUSTON JT AUTH	PA0025941	PA	Sewage plant, major	14.4 MGD	Copper, total [as Cu]	daily maximum 1.78 lb/d, new	Feb 1, 2027	0.4 lb/d (9 values)	0.225×
CITY OF HAMPTON	IA0036471	IA	Sewage plant, major	.9 MGD	Copper, total [as Cu]	30-day average 0.1956 lb/d, new	Feb 1, 2027	under 3 values	—
CITY OF HAMPTON	IA0036471	IA	Sewage plant, major	.9 MGD	Copper, total [as Cu]	30-day average 0.01726 mg/L, new	Feb 1, 2027	under 3 values	—
CITY OF HAMPTON	IA0036471	IA	Sewage plant, major	.9 MGD	Copper, total [as Cu]	daily maximum 0.02696 mg/L, new	Feb 1, 2027	under 3 values	—
CITY OF HAMPTON	IA0036471	IA	Sewage plant, major	.9 MGD	Copper, total [as Cu]	daily maximum 0.3086 lb/d, new	Feb 1, 2027	under 3 values	—
CITY OF PELLA	IA0043869	IA	Sewage plant, major	5.5 MGD	Copper, total [as Cu]	30-day average 0.02358 mg/L, new	Mar 1, 2027	under 3 values	—
CITY OF PELLA	IA0043869	IA	Sewage plant, major	5.5 MGD	Copper, total [as Cu]	30-day average 0.8476 lb/d, new	Mar 1, 2027	under 3 values	—
CITY OF PELLA	IA0043869	IA	Sewage plant, major	5.5 MGD	Copper, total [as Cu]	daily maximum 0.02854 mg/L, new	Mar 1, 2027	under 3 values	—
CITY OF PELLA	IA0043869	IA	Sewage plant, major	5.5 MGD	Copper, total [as Cu]	daily maximum 1.026 lb/d, new	Mar 1, 2027	under 3 values	—
SKYTOP LODGE CORP	PA0029874	PA	Industrial	.075 MGD	Copper, total [as Cu]	daily maximum 0.091 mg/L, new	Apr 1, 2027	0.0768 mg/L (9 values)	0.844×
SKYTOP LODGE CORP	PA0029874	PA	Industrial	.075 MGD	Copper, total [as Cu]	daily maximum 0.056 lb/d, new	Apr 1, 2027	under 3 values	—
SKYTOP LODGE CORP	PA0029874	PA	Industrial	.075 MGD	Copper, total [as Cu]	monthly average 0.036 lb/d, new	Apr 1, 2027	under 3 values	—
SHERMAN, CITY OF	TX0141755	TX	Industrial	0 MGD	Copper, total [as Cu]	daily average 0.072 mg/L, new	May 1, 2027	0.01395 mg/L (4 values)	0.194×
SHERMAN, CITY OF	TX0141755	TX	Industrial	0 MGD	Copper, total [as Cu]	daily maximum 0.151 mg/L, new	May 1, 2027	0.0162 mg/L (4 values)	0.107×
SCHUYLKILL VALLEY SEW AUTH	PA0064211	PA	Sewage plant	.55 MGD	Copper, total [as Cu]	monthly average 28.8 ug/L, new	Jun 1, 2027	10 ug/L (9 values, 4 below detection)	0.347×
SCHUYLKILL VALLEY SEW AUTH	PA0064211	PA	Sewage plant	.55 MGD	Copper, total [as Cu]	daily maximum 38.8 ug/L, new	Jun 1, 2027	10 ug/L (9 values)	0.258×
SMITHFIELD TWP MONROE CNTY	PA0061361	PA	Sewage plant	.4 MGD	Copper, total [as Cu]	daily maximum 0.032 mg/L, new	Jun 1, 2027	0.0065 mg/L (8 values, 2 below detection)	0.203×
PA AMER WATER CO	PA0210161	PA	Industrial	6 MGD	Copper, total [as Cu]	daily maximum 0.45 lb/d, new	Jun 1, 2027	under 3 values	—
PA AMER WATER CO	PA0210161	PA	Industrial	6 MGD	Copper, total [as Cu]	daily maximum 0.012 mg/L, new	Jun 1, 2027	under 3 values	—
PA AMER WATER CO	PA0210161	PA	Industrial	6 MGD	Copper, total [as Cu]	monthly average 0.26 lb/d, new	Jun 1, 2027	under 3 values	—
PA AMER WATER CO	PA0210161	PA	Industrial	6 MGD	Copper, total [as Cu]	monthly average 0.0069 mg/L, new	Jun 1, 2027	under 3 values	—
PA AMER WATER CO	PA0210161	PA	Industrial	6 MGD	Copper, total [as Cu]	daily maximum 0.15 lb/d, new	Jun 1, 2027	under 3 values	—
PA AMER WATER CO	PA0210161	PA	Industrial	6 MGD	Copper, total [as Cu]	daily maximum 0.012 mg/L, new	Jun 1, 2027	under 3 values	—
PA AMER WATER CO	PA0210161	PA	Industrial	6 MGD	Copper, total [as Cu]	monthly average 0.0069 mg/L, new	Jun 1, 2027	under 3 values	—
PA AMER WATER CO	PA0210161	PA	Industrial	6 MGD	Copper, total [as Cu]	monthly average 0.086 lb/d, new	Jun 1, 2027	under 3 values	—
SMITHFIELD TWP MONROE CNTY	PA0061361	PA	Sewage plant	.4 MGD	Copper, total [as Cu]	daily maximum 0.11 lb/d, new	Jun 1, 2027	under 3 values	—
SMITHFIELD TWP MONROE CNTY	PA0061361	PA	Sewage plant	.4 MGD	Copper, total [as Cu]	monthly average 0.021 mg/L, new	Jun 1, 2027	0.006 mg/L (8 values, 5 below detection)	—
SMITHFIELD TWP MONROE CNTY	PA0061361	PA	Sewage plant	.4 MGD	Copper, total [as Cu]	monthly average 0.069 lb/d, new	Jun 1, 2027	0.007 lb/d (8 values, 5 below detection)	—
SUMMIT CORPORATION OF AMERICA	CT0001180	CT	Industrial, major	—	Copper, total [as Cu]	monthly average 119 ug/L, tighter	Jul 1, 2027	32 ug/L (11 values)	0.269×
SUMMIT CORPORATION OF AMERICA	CT0001180	CT	Industrial, major	—	Copper, total [as Cu]	daily maximum 251 ug/L, tighter	Jul 1, 2027	46 ug/L (11 values)	0.183×
SUMMIT CORPORATION OF AMERICA	CT0001180	CT	Industrial, major	—	Copper, total [as Cu]	monthly average 71 g/d, tighter	Jul 1, 2027	12.9 g/d (11 values)	0.182×
SUMMIT CORPORATION OF AMERICA	CT0001180	CT	Industrial, major	—	Copper, total [as Cu]	daily maximum 151 g/d, tighter	Jul 1, 2027	21.95 g/d (11 values)	0.145×
NUCOR STEEL BERKELEY	SC0047392	SC	Industrial, major	—	Copper, total [as Cu]	daily maximum 0.0058 mg/L, new	Jul 1, 2027	0 mg/L (11 values)	0×
NUCOR STEEL BERKELEY	SC0047392	SC	Industrial, major	—	Copper, total [as Cu]	monthly average 0.0037 mg/L, new	Jul 1, 2027	0 mg/L (11 values)	0×
REPUBLIC SVC OF PA LLC	PA0046680	PA	Industrial	.5 MGD	Copper, total [as Cu]	daily maximum 0.085 mg/L, new	Jul 1, 2027	0.005 mg/L (9 values, 9 below detection)	—
REPUBLIC SVC OF PA LLC	PA0046680	PA	Industrial	.5 MGD	Copper, total [as Cu]	daily maximum 0.35 lb/d, new	Jul 1, 2027	under 3 values	—
REPUBLIC SVC OF PA LLC	PA0046680	PA	Industrial	.5 MGD	Copper, total [as Cu]	monthly average 0.23 lb/d, new	Jul 1, 2027	under 3 values	—
REPUBLIC SVC OF PA LLC	PA0046680	PA	Industrial	.5 MGD	Copper, total [as Cu]	monthly average 0.055 mg/L, new	Jul 1, 2027	0.005 mg/L (9 values, 9 below detection)	—
Kiowa Power Partners (KPP)-KIA	OK0044083	OK	Industrial, major	—	Copper, total [as Cu]	monthly average 12.92 ug/L, new	Aug 1, 2027	10.7 ug/L (11 values)	0.828×
Kiowa Power Partners (KPP)-KIA	OK0044083	OK	Industrial, major	—	Copper, total [as Cu]	daily maximum 17.73 ug/L, new	Aug 1, 2027	12 ug/L (11 values)	0.677×
Kiowa Power Partners (KPP)-KIA	OK0044083	OK	Industrial, major	—	Copper, total [as Cu]	monthly average 0.088 lb/d, new	Aug 1, 2027	0.042 lb/d (11 values)	0.477×
Kiowa Power Partners (KPP)-KIA	OK0044083	OK	Industrial, major	—	Copper, total [as Cu]	daily maximum 0.121 lb/d, new	Aug 1, 2027	0.056 lb/d (11 values)	0.463×
CURTISS WRIGHT CORP	PA0001228	PA	Industrial	.55 MGD	Copper, total [as Cu]	monthly average 4 ug/L, new	Sep 1, 2027	2.3 ug/L (3 values)	0.575×
CURTISS WRIGHT CORP	PA0001228	PA	Industrial	.55 MGD	Copper, total [as Cu]	daily maximum 5.08 ug/L, new	Sep 1, 2027	2.3 ug/L (3 values)	0.453×
ARMSTRONG CNTY IND DEV AUTH	PA0218138	PA	Sewage plant	.4 MGD	Copper, total [as Cu]	monthly average 0.036 lb/d, new	Sep 1, 2027	0.007 lb/d (8 values, 1 below detection)	0.194×
ARMSTRONG CNTY IND DEV AUTH	PA0218138	PA	Sewage plant	.4 MGD	Copper, total [as Cu]	weekly average 0.054 lb/d, new	Sep 1, 2027	0.01 lb/d (8 values, 1 below detection)	0.185×
CITY OF EVANSDALE	IA0022004	IA	Sewage plant, major	1.815 MGD	Copper, total [as Cu]	30-day average 0.0269 mg/L, new	Sep 1, 2027	under 3 values	—
CITY OF EVANSDALE	IA0022004	IA	Sewage plant, major	1.815 MGD	Copper, total [as Cu]	30-day average 0.3403 lb/d, new	Sep 1, 2027	under 3 values	—
CITY OF EVANSDALE	IA0022004	IA	Sewage plant, major	1.815 MGD	Copper, total [as Cu]	daily maximum 0.3403 lb/d, new	Sep 1, 2027	under 3 values	—
CITY OF EVANSDALE	IA0022004	IA	Sewage plant, major	1.815 MGD	Copper, total [as Cu]	daily maximum 0.0269 mg/L, new	Sep 1, 2027	under 3 values	—
CURTISS WRIGHT CORP	PA0001228	PA	Industrial	.55 MGD	Copper, total [as Cu]	daily maximum 5.76 ug/L, new	Sep 1, 2027	under 3 values	—
CURTISS WRIGHT CORP	PA0001228	PA	Industrial	.55 MGD	Copper, total [as Cu]	monthly average 4.21 ug/L, new	Sep 1, 2027	under 3 values	—
CURTISS WRIGHT CORP	PA0001228	PA	Industrial	.55 MGD	Copper, total [as Cu]	daily maximum 6.21 ug/L, new	Sep 1, 2027	under 3 values	—
CURTISS WRIGHT CORP	PA0001228	PA	Industrial	.55 MGD	Copper, total [as Cu]	monthly average 4.53 ug/L, new	Sep 1, 2027	under 3 values	—
CURTISS WRIGHT CORP	PA0001228	PA	Industrial	.55 MGD	Copper, total [as Cu]	daily maximum 4 ug/L, new	Sep 1, 2027	under 3 values	—
CURTISS WRIGHT CORP	PA0001228	PA	Industrial	.55 MGD	Copper, total [as Cu]	monthly average 4 ug/L, new	Sep 1, 2027	under 3 values	—
CURTISS WRIGHT CORP	PA0001228	PA	Industrial	.55 MGD	Copper, total [as Cu]	daily maximum 23.1 ug/L, new	Sep 1, 2027	under 3 values	—
CURTISS WRIGHT CORP	PA0001228	PA	Industrial	.55 MGD	Copper, total [as Cu]	monthly average 14.8 ug/L, new	Sep 1, 2027	under 3 values	—
CURTISS WRIGHT CORP	PA0001228	PA	Industrial	.55 MGD	Copper, total [as Cu]	daily maximum 4.85 ug/L, new	Sep 1, 2027	under 3 values	—
CURTISS WRIGHT CORP	PA0001228	PA	Industrial	.55 MGD	Copper, total [as Cu]	monthly average 4 ug/L, new	Sep 1, 2027	under 3 values	—
WEATHERFORD US LP	TX0089940	TX	Industrial	.0108 MGD	Copper, total [as Cu]	daily average 0.0173 mg/L, tighter	Oct 1, 2027	0.00684 mg/L (11 values, 1 below detection)	0.395×
WEATHERFORD US LP	TX0089940	TX	Industrial	.0108 MGD	Copper, total [as Cu]	daily maximum 0.0367 mg/L, tighter	Oct 1, 2027	0.00894 mg/L (11 values, 1 below detection)	0.244×
WEATHERFORD US LP	TX0089940	TX	Industrial	.0108 MGD	Copper, total [as Cu]	daily maximum 0.0033 lb/d, tighter	Oct 1, 2027	0.00032 lb/d (11 values)	0.097×
WEATHERFORD US LP	TX0089940	TX	Industrial	.0108 MGD	Copper, total [as Cu]	daily average 0.0016 lb/d, tighter	Oct 1, 2027	0.0001217 lb/d (11 values)	0.0761×
TERREBONNE PARISH CONSOLIDATED GOVERNMENT	LA0100820	LA	Sewage plant	—	Copper, total [as Cu]	daily maximum 0.27 mg/L, new	Oct 1, 2027	under 3 values	—
TERREBONNE PARISH CONSOLIDATED GOVERNMENT	LA0100820	LA	Sewage plant	—	Copper, total [as Cu]	monthly average 0.11 mg/L, new	Oct 1, 2027	under 3 values	—
US SILICA COMPANY	TX0001368	TX	Industrial	—	Copper, total [as Cu]	daily maximum 0.0426 mg/L, tighter	Oct 1, 2027	under 3 values	—
SCHUYLKILL HAVEN BORO WATER AUTH SCHUYLKILL CNTY	PA0029017	PA	Sewage plant, major	2.8 MGD	Copper, total [as Cu]	monthly average 0.026 mg/L, new	Nov 1, 2027	0.013 mg/L (9 values)	0.5×
SCHUYLKILL HAVEN BORO WATER AUTH SCHUYLKILL CNTY	PA0029017	PA	Sewage plant, major	2.8 MGD	Copper, total [as Cu]	daily maximum 0.04 mg/L, new	Nov 1, 2027	0.018 mg/L (9 values)	0.45×
SCHUYLKILL HAVEN BORO WATER AUTH SCHUYLKILL CNTY	PA0029017	PA	Sewage plant, major	2.8 MGD	Copper, total [as Cu]	monthly average 0.6 lb/d, new	Nov 1, 2027	0.1 lb/d (9 values)	0.167×
SCHUYLKILL HAVEN BORO WATER AUTH SCHUYLKILL CNTY	PA0029017	PA	Sewage plant, major	2.8 MGD	Copper, total [as Cu]	daily maximum 0.93 lb/d, new	Nov 1, 2027	0.1 lb/d (9 values)	0.108×
Entergy Arkansas, LLC- Ouachita Plant	LA0112780	LA	Industrial, major	—	Copper, total [as Cu]	daily maximum 0.303 mg/L, new	Nov 1, 2027	under 3 values	—
Entergy Arkansas, LLC- Ouachita Plant	LA0112780	LA	Industrial, major	—	Copper, total [as Cu]	monthly average 0.128 mg/L, new	Nov 1, 2027	under 3 values	—
Tyson Poultry, Inc.- Broken Bow	OK0000795	OK	Industrial, major	—	Copper, total [as Cu]	monthly average 7.27 ug/L, new	Dec 1, 2027	5.94 ug/L (9 values)	0.817×
Tyson Poultry, Inc.- Broken Bow	OK0000795	OK	Industrial, major	—	Copper, total [as Cu]	monthly average 0.0946 lb/d, new	Dec 1, 2027	0.07 lb/d (9 values)	0.74×
MCCANDLESS TWP SANI AUTH ALLEGHENY CNTY	PA0028193	PA	Sewage plant	.094 MGD	Copper, total [as Cu]	daily maximum 0.014 lb/d, tighter	Dec 1, 2027	0.01 lb/d (9 values, 1 below detection)	0.714×
NEW MORGAN BORO BERKS CNTY	PA0088048	PA	Sewage plant	.2 MGD	Copper, total [as Cu]	daily maximum 0.047 mg/L, new	Dec 1, 2027	0.0275 mg/L (8 values)	0.585×
Tyson Poultry, Inc.- Broken Bow	OK0000795	OK	Industrial, major	—	Copper, total [as Cu]	daily maximum 12.39 ug/L, new	Dec 1, 2027	6.2 ug/L (9 values)	0.5×
Tyson Poultry, Inc.- Broken Bow	OK0000795	OK	Industrial, major	—	Copper, total [as Cu]	daily maximum 0.1612 lb/d, new	Dec 1, 2027	0.07 lb/d (9 values)	0.434×
NEW MORGAN BORO BERKS CNTY	PA0088048	PA	Sewage plant	.2 MGD	Copper, total [as Cu]	daily maximum 0.078 lb/d, new	Dec 1, 2027	0.00125 lb/d (6 values)	0.016×
NEW MORGAN BORO BERKS CNTY	PA0088048	PA	Sewage plant	.2 MGD	Copper, total [as Cu]	monthly average 0.029 mg/L, new	Dec 1, 2027	under 3 values	—
NEW MORGAN BORO BERKS CNTY	PA0088048	PA	Sewage plant	.2 MGD	Copper, total [as Cu]	monthly average 0.048 lb/d, new	Dec 1, 2027	under 3 values	—
SLATINGTON JT CLIENT	PA0020176	PA	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	monthly average 0.54 lb/d, new	Dec 31, 2027	0.32 lb/d (9 values)	0.593×
SLATINGTON JT CLIENT	PA0020176	PA	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	daily maximum 0.64 lb/d, new	Dec 31, 2027	0.37 lb/d (9 values)	0.578×
LAKE CHARLES HARBOR & TERMINAL DISTRICT	LA0091812	LA	Industrial	—	Copper, total [as Cu]	monthly average 0.022 mg/L, new	Jan 1, 2028	0.005 mg/L (3 values, 1 below detection)	0.227×
NORTHAMPTON BORO NORTHAMPTON CNTY	PA0031127	PA	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	monthly average 0.037 mg/L, new	Jan 1, 2028	0.0077 mg/L (8 values)	0.208×
NORTHAMPTON BORO NORTHAMPTON CNTY	PA0031127	PA	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	daily maximum 0.059 mg/L, new	Jan 1, 2028	0.0077 mg/L (8 values)	0.131×
NORTHAMPTON BORO NORTHAMPTON CNTY	PA0031127	PA	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	monthly average 0.46 lb/d, new	Jan 1, 2028	0.0545 lb/d (8 values)	0.118×
LAKE CHARLES HARBOR & TERMINAL DISTRICT	LA0091812	LA	Industrial	—	Copper, total [as Cu]	daily maximum 0.053 mg/L, new	Jan 1, 2028	0.005 mg/L (3 values, 1 below detection)	0.0943×
NORTHAMPTON BORO NORTHAMPTON CNTY	PA0031127	PA	Sewage plant, major	1.5 MGD	Copper, total [as Cu]	daily maximum 0.73 lb/d, new	Jan 1, 2028	0.0545 lb/d (8 values)	0.0747×
GERDAU	IA0061972	IA	Industrial	—	Copper, total [as Cu]	30-day average 0.0303 mg/L, tighter	Feb 1, 2028	0.02218 mg/L (11 values)	0.732×
GERDAU	IA0061972	IA	Industrial	—	Copper, total [as Cu]	daily maximum 0.2273 lb/d, tighter	Feb 1, 2028	0.02615 lb/d (11 values)	0.115×
GERDAU	IA0061972	IA	Industrial	—	Copper, total [as Cu]	30-day average 0.1768 lb/d, tighter	Feb 1, 2028	0.01695 lb/d (11 values)	0.0958×
SAINT CLAIR BORO SEW AUTH SCHUYLKILL CNTY	PA0025224	PA	Sewage plant	.75 MGD	Copper, total [as Cu]	daily maximum 0.034 mg/L, new	Mar 1, 2028	0.02 mg/L (9 values, 1 below detection)	0.588×
UWCHLAN TWP MUNI AUTH CHESTER CNTY	PA0054917	PA	Sewage plant	.475 MGD	Copper, total [as Cu]	quarterly average 0.028 mg/L, new	Mar 1, 2028	0.013 mg/L (3 values)	0.464×
UWCHLAN TWP MUNI AUTH CHESTER CNTY	PA0054917	PA	Sewage plant	.475 MGD	Copper, total [as Cu]	daily maximum 0.043 mg/L, new	Mar 1, 2028	0.013 mg/L (3 values)	0.302×
SAINT CLAIR BORO SEW AUTH SCHUYLKILL CNTY	PA0025224	PA	Sewage plant	.75 MGD	Copper, total [as Cu]	daily maximum 0.21 lb/d, new	Mar 1, 2028	0.06 lb/d (9 values)	0.286×
JOHN DEERE DUBUQUE WORKS	IA0000051	IA	Industrial, major	.36 MGD	Copper, total [as Cu]	30-day average 0.62 lb/d, new	Mar 1, 2028	under 3 values	—
JOHN DEERE DUBUQUE WORKS	IA0000051	IA	Industrial, major	.36 MGD	Copper, total [as Cu]	30-day average 0.034 mg/L, new	Mar 1, 2028	under 3 values	—
JOHN DEERE DUBUQUE WORKS	IA0000051	IA	Industrial, major	.36 MGD	Copper, total [as Cu]	daily maximum 0.62 lb/d, new	Mar 1, 2028	under 3 values	—
JOHN DEERE DUBUQUE WORKS	IA0000051	IA	Industrial, major	.36 MGD	Copper, total [as Cu]	daily maximum 0.034 mg/L, new	Mar 1, 2028	under 3 values	—
Valero Refining Company	OK0001295	OK	Industrial, major	—	Copper, total [as Cu]	daily maximum 87.7 ug/L, new	Mar 1, 2028	under 3 values	—
Valero Refining Company	OK0001295	OK	Industrial, major	—	Copper, total [as Cu]	monthly average 50.6 ug/L, new	Mar 1, 2028	under 3 values	—
SAINT CLAIR BORO SEW AUTH SCHUYLKILL CNTY	PA0025224	PA	Sewage plant	.75 MGD	Copper, total [as Cu]	monthly average 0.16 lb/d, new	Mar 1, 2028	0.03 lb/d (9 values, 7 below detection)	—
SAINT CLAIR BORO SEW AUTH SCHUYLKILL CNTY	PA0025224	PA	Sewage plant	.75 MGD	Copper, total [as Cu]	monthly average 0.025 mg/L, new	Mar 1, 2028	0.01 mg/L (9 values, 6 below detection)	—
UWCHLAN TWP MUNI AUTH CHESTER CNTY	PA0054917	PA	Sewage plant	.475 MGD	Copper, total [as Cu]	daily maximum 0.17 lb/d, new	Mar 1, 2028	under 3 values	—
UWCHLAN TWP MUNI AUTH CHESTER CNTY	PA0054917	PA	Sewage plant	.475 MGD	Copper, total [as Cu]	quarterly average 0.11 lb/d, new	Mar 1, 2028	under 3 values	—
UPPER BERN TWP BERKS CNTY	PA0088251	PA	Sewage plant	.155 MGD	Copper, total [as Cu]	monthly average 0.01 mg/L, new	May 1, 2028	0.0095 mg/L (8 values)	0.95×
UPPER BERN TWP BERKS CNTY	PA0088251	PA	Sewage plant	.155 MGD	Copper, total [as Cu]	daily maximum 0.016 mg/L, new	May 1, 2028	0.013 mg/L (8 values)	0.812×
UPPER BERN TWP BERKS CNTY	PA0088251	PA	Sewage plant	.155 MGD	Copper, total [as Cu]	monthly average 0.013 lb/d, new	May 1, 2028	0.0055 lb/d (8 values)	0.423×
UPPER BERN TWP BERKS CNTY	PA0088251	PA	Sewage plant	.155 MGD	Copper, total [as Cu]	daily maximum 0.02 lb/d, new	May 1, 2028	0.006 lb/d (8 values)	0.3×
SCHUYLKILL CNTY MUNI AUTH	PA0042951	PA	Sewage plant	.5 MGD	Copper, total [as Cu]	monthly average 0.021 mg/L, new	May 1, 2028	0.006 mg/L (9 values)	0.286×
SCHUYLKILL CNTY MUNI AUTH	PA0042951	PA	Sewage plant	.5 MGD	Copper, total [as Cu]	daily maximum 0.033 mg/L, new	May 1, 2028	0.009 mg/L (9 values)	0.273×
WIND GAP BORO MUNI AUTH NORTHAMPTON CNTY	PA0052167	PA	Sewage plant, major	1 MGD	Copper, total [as Cu]	monthly average 0.012 mg/L, new	May 1, 2028	0.003 mg/L (9 values)	0.25×
WIND GAP BORO MUNI AUTH NORTHAMPTON CNTY	PA0052167	PA	Sewage plant, major	1 MGD	Copper, total [as Cu]	daily maximum 0.018 mg/L, new	May 1, 2028	0.004 mg/L (9 values)	0.222×
WIND GAP BORO MUNI AUTH NORTHAMPTON CNTY	PA0052167	PA	Sewage plant, major	1 MGD	Copper, total [as Cu]	monthly average 0.1 lb/d, new	May 1, 2028	0.0123 lb/d (9 values)	0.123×
WIND GAP BORO MUNI AUTH NORTHAMPTON CNTY	PA0052167	PA	Sewage plant, major	1 MGD	Copper, total [as Cu]	daily maximum 0.15 lb/d, new	May 1, 2028	0.0161 lb/d (9 values)	0.107×
PETERS TWP SANI AUTH WASHINGTON CNTY	PA0028711	PA	Sewage plant, major	2.3 MGD	Copper, total [as Cu]	monthly average 15.9 ug/L, new	Jul 1, 2028	8.3 ug/L (9 values, 1 below detection)	0.522×
BESSEMER MUNI AUTH	PA0210471	PA	Sewage plant	.35 MGD	Copper, total [as Cu]	monthly average 0.022 mg/L, new	Jul 1, 2028	0.01 mg/L (8 values, 1 below detection)	0.455×
PETERS TWP SANI AUTH WASHINGTON CNTY	PA0028711	PA	Sewage plant, major	2.3 MGD	Copper, total [as Cu]	daily maximum 24.8 ug/L, new	Jul 1, 2028	11 ug/L (9 values)	0.444×
ROBESONIA WERNERSVILLE MUNI AUTH BERKS CNTY	PA0031062	PA	Sewage plant, major	1.4 MGD	Copper, total [as Cu]	daily maximum 0.047 mg/L, new	Jul 1, 2028	0.02 mg/L (9 values)	0.426×
ROBESONIA WERNERSVILLE MUNI AUTH BERKS CNTY	PA0031062	PA	Sewage plant, major	1.4 MGD	Copper, total [as Cu]	monthly average 0.034 mg/L, new	Jul 1, 2028	0.0122 mg/L (9 values)	0.359×
BESSEMER MUNI AUTH	PA0210471	PA	Sewage plant	.35 MGD	Copper, total [as Cu]	daily maximum 0.035 mg/L, new	Jul 1, 2028	0.0125 mg/L (8 values)	0.357×
MOUNTAINTOP AREA JT SANI AUTH LUZERNE CNTY	PA0045985	PA	Sewage plant, major	4.16 MGD	Copper, total [as Cu]	monthly average 0.32 lb/d, new	Jul 1, 2028	0.095 lb/d (8 values)	0.297×
PETERS TWP SANI AUTH WASHINGTON CNTY	PA0028711	PA	Sewage plant, major	2.3 MGD	Copper, total [as Cu]	monthly average 0.3 lb/d, new	Jul 1, 2028	0.0775 lb/d (9 values, 1 below detection)	0.258×
BESSEMER MUNI AUTH	PA0210471	PA	Sewage plant	.35 MGD	Copper, total [as Cu]	monthly average 0.065 lb/d, new	Jul 1, 2028	0.015 lb/d (8 values, 1 below detection)	0.231×
PETERS TWP SANI AUTH WASHINGTON CNTY	PA0028711	PA	Sewage plant, major	2.3 MGD	Copper, total [as Cu]	daily maximum 0.48 lb/d, new	Jul 1, 2028	0.11 lb/d (9 values, 1 below detection)	0.229×
ROBESONIA WERNERSVILLE MUNI AUTH BERKS CNTY	PA0031062	PA	Sewage plant, major	1.4 MGD	Copper, total [as Cu]	monthly average 0.4 lb/d, new	Jul 1, 2028	0.09 lb/d (9 values)	0.225×
BESSEMER MUNI AUTH	PA0210471	PA	Sewage plant	.35 MGD	Copper, total [as Cu]	daily maximum 0.1 lb/d, new	Jul 1, 2028	0.02 lb/d (8 values)	0.2×
MOUNTAINTOP AREA JT SANI AUTH LUZERNE CNTY	PA0045985	PA	Sewage plant, major	4.16 MGD	Copper, total [as Cu]	daily maximum 0.58 lb/d, new	Jul 1, 2028	0.1 lb/d (8 values)	0.172×
ROBESONIA WERNERSVILLE MUNI AUTH BERKS CNTY	PA0031062	PA	Sewage plant, major	1.4 MGD	Copper, total [as Cu]	daily maximum 0.55 lb/d, new	Jul 1, 2028	0.09 lb/d (9 values)	0.164×
MOUNTAINTOP AREA JT SANI AUTH LUZERNE CNTY	PA0045985	PA	Sewage plant, major	4.16 MGD	Copper, total [as Cu]	monthly average 9.2 ug/L, new	Jul 1, 2028	0.0045 ug/L (8 values)	0.000489×
MOUNTAINTOP AREA JT SANI AUTH LUZERNE CNTY	PA0045985	PA	Sewage plant, major	4.16 MGD	Copper, total [as Cu]	daily maximum 16.6 ug/L, new	Jul 1, 2028	0.00588 ug/L (8 values)	0.000354×
KINZE MANUFACTURING, INC.	IA0076881	IA	Industrial	—	Copper, total [as Cu]	30-day average 0.0181 lb/d, new	Jul 1, 2028	under 3 values	—
KINZE MANUFACTURING, INC.	IA0076881	IA	Industrial	—	Copper, total [as Cu]	30-day average 0.01929 mg/L, new	Jul 1, 2028	under 3 values	—
KINZE MANUFACTURING, INC.	IA0076881	IA	Industrial	—	Copper, total [as Cu]	daily maximum 0.0256 lb/d, new	Jul 1, 2028	under 3 values	—
KINZE MANUFACTURING, INC.	IA0076881	IA	Industrial	—	Copper, total [as Cu]	daily maximum 0.02729 mg/L, new	Jul 1, 2028	under 3 values	—
PA AMER WATER CO	PA0060526	PA	Industrial	.145 MGD	Copper, total [as Cu]	daily maximum 0.54 mg/L, new	Aug 1, 2028	under 3 values	—
PA AMER WATER CO	PA0060526	PA	Industrial	.145 MGD	Copper, total [as Cu]	instantaneous maximum 0.3 lb/d, new	Aug 1, 2028	under 3 values	—
PA AMER WATER CO	PA0060526	PA	Industrial	.145 MGD	Copper, total [as Cu]	monthly average 0.2 lb/d, new	Aug 1, 2028	under 3 values	—
PA AMER WATER CO	PA0060526	PA	Industrial	.145 MGD	Copper, total [as Cu]	monthly average 0.35 mg/L, new	Aug 1, 2028	under 3 values	—
GREAT FALLS TOWN OF	SC0021211	SC	Sewage plant, major	1.4 MGD	Copper, total [as Cu]	daily maximum 29 lb/d, new	Oct 1, 2028	0 lb/d (3 values)	0×
GREAT FALLS TOWN OF	SC0021211	SC	Sewage plant, major	1.4 MGD	Copper, total [as Cu]	daily maximum 2.46 mg/L, new	Oct 1, 2028	0 mg/L (3 values)	0×
GREAT FALLS TOWN OF	SC0021211	SC	Sewage plant, major	1.4 MGD	Copper, total [as Cu]	monthly average 1.9 mg/L, new	Oct 1, 2028	0 mg/L (3 values)	0×
GREAT FALLS TOWN OF	SC0021211	SC	Sewage plant, major	1.4 MGD	Copper, total [as Cu]	monthly average 22 lb/d, new	Oct 1, 2028	0 lb/d (3 values)	0×
Ferriday Town of - Town of Ferriday WWTP	LA0020630	LA	Sewage plant, major	.8 MGD	Copper, total [as Cu]	monthly average 0.12 lb/d, new	Oct 1, 2028	under 3 values	—
Ferriday Town of - Town of Ferriday WWTP	LA0020630	LA	Sewage plant, major	.8 MGD	Copper, total [as Cu]	weekly average 0.28 lb/d, new	Oct 1, 2028	under 3 values	—
WYOMING CNTY HEALTHCARE CENTER INC.	PA0036765	PA	Industrial	.024 MGD	Copper, total [as Cu]	daily maximum 0.022 mg/L, new	Nov 1, 2028	0.021 mg/L (6 values, 4 below detection)	—
WYOMING CNTY HEALTHCARE CENTER INC.	PA0036765	PA	Industrial	.024 MGD	Copper, total [as Cu]	daily maximum 0.004 lb/d, new	Nov 1, 2028	0.001 lb/d (6 values, 5 below detection)	—
WYOMING CNTY HEALTHCARE CENTER INC.	PA0036765	PA	Industrial	.024 MGD	Copper, total [as Cu]	monthly average 0.003 lb/d, new	Nov 1, 2028	0.00095 lb/d (6 values, 5 below detection)	—
WYOMING CNTY HEALTHCARE CENTER INC.	PA0036765	PA	Industrial	.024 MGD	Copper, total [as Cu]	monthly average 0.014 mg/L, new	Nov 1, 2028	0.0215 mg/L (6 values, 5 below detection)	—
Cleco Power, LLC- Rodemacher Power Station	LA0008036	LA	Industrial, major	—	Copper, total [as Cu]	daily maximum 27 ug/L, tighter	Dec 1, 2028	under 3 values	—
Cleco Power, LLC- Rodemacher Power Station	LA0008036	LA	Industrial, major	—	Copper, total [as Cu]	monthly average 11.2 ug/L, tighter	Dec 1, 2028	under 3 values	—
ISLE OF PALMS WATER & SEWER COMMISSION	SC0043583	SC	Sewage plant	.22 MGD	Copper, total [as Cu]	daily maximum 0.083 mg/L, new	Jan 1, 2029	0 mg/L (6 values)	0×
ISLE OF PALMS WATER & SEWER COMMISSION	SC0043583	SC	Sewage plant	.22 MGD	Copper, total [as Cu]	monthly average 0.053 mg/L, new	Jan 1, 2029	0 mg/L (6 values)	0×
PA DPW	PA0029432	PA	Industrial	.395 MGD	Copper, total [as Cu]	daily maximum 0.025 mg/L, new	Jan 1, 2029	under 3 values	—
PA DPW	PA0029432	PA	Industrial	.395 MGD	Copper, total [as Cu]	daily maximum 0.084 lb/d, new	Jan 1, 2029	under 3 values	—
PA DPW	PA0029432	PA	Industrial	.395 MGD	Copper, total [as Cu]	monthly average 0.016 mg/L, new	Jan 1, 2029	under 3 values	—
PA DPW	PA0029432	PA	Industrial	.395 MGD	Copper, total [as Cu]	monthly average 0.054 lb/d, new	Jan 1, 2029	under 3 values	—
Phillips 66 Company-Ponca City Refinery	OK0000256	OK	Industrial, major	—	Copper, total [as Cu]	daily maximum 42.2 ug/L, new	Feb 1, 2029	30.45 ug/L (4 values)	0.722×
Phillips 66 Company-Ponca City Refinery	OK0000256	OK	Industrial, major	—	Copper, total [as Cu]	monthly average 28.8 ug/L, new	Feb 1, 2029	17.55 ug/L (4 values)	0.609×
W MIFFLIN SANI SEW & STORMWATER AUTH ALLEGHENY CNTY	PA0026522	PA	Sewage plant, major	1.2 MGD	Copper, total [as Cu]	monthly average 9.37 ug/L, new	Apr 1, 2029	5 ug/L (3 values, 1 below detection)	0.534×
PA DEPT OF CORR	PA0030139	PA	Industrial	.45 MGD	Copper, total [as Cu]	monthly average 0.014 mg/L, new	Apr 1, 2029	0.005815 mg/L (9 values, 1 below detection)	0.415×
W MIFFLIN SANI SEW & STORMWATER AUTH ALLEGHENY CNTY	PA0026522	PA	Sewage plant, major	1.2 MGD	Copper, total [as Cu]	daily maximum 14 ug/L, new	Apr 1, 2029	5 ug/L (3 values, 1 below detection)	0.357×
PA DEPT OF CORR	PA0030139	PA	Industrial	.45 MGD	Copper, total [as Cu]	monthly average 0.05 lb/d, new	Apr 1, 2029	0.0123 lb/d (9 values, 1 below detection)	0.246×
W MIFFLIN SANI SEW & STORMWATER AUTH ALLEGHENY CNTY	PA0026522	PA	Sewage plant, major	1.2 MGD	Copper, total [as Cu]	monthly average 0.094 lb/d, new	Apr 1, 2029	under 3 values	—
W MIFFLIN SANI SEW & STORMWATER AUTH ALLEGHENY CNTY	PA0026522	PA	Sewage plant, major	1.2 MGD	Copper, total [as Cu]	weekly average 0.14 lb/d, new	Apr 1, 2029	under 3 values	—
GREATER POTTSVILLE AREA SEWER AUTH SCHUYLKILL CNTY	PA0043885	PA	Sewage plant, major	8.2 MGD	Copper, total [as Cu]	monthly average 0.017 mg/L, tighter	May 1, 2029	0.008 mg/L (9 values)	0.471×
GREATER POTTSVILLE AREA SEWER AUTH SCHUYLKILL CNTY	PA0043885	PA	Sewage plant, major	8.2 MGD	Copper, total [as Cu]	daily maximum 0.026 mg/L, tighter	May 1, 2029	0.011 mg/L (9 values)	0.423×
GREATER POTTSVILLE AREA SEWER AUTH SCHUYLKILL CNTY	PA0043885	PA	Sewage plant, major	8.2 MGD	Copper, total [as Cu]	daily maximum 1.77 lb/d, tighter	May 1, 2029	0.3403 lb/d (9 values)	0.192×
GREATER POTTSVILLE AREA SEWER AUTH SCHUYLKILL CNTY	PA0043885	PA	Sewage plant, major	8.2 MGD	Copper, total [as Cu]	monthly average 1.16 lb/d, tighter	May 1, 2029	0.2188 lb/d (9 values)	0.189×
GREGORY POWER PARTNERS LLC	TX0137502	TX	Industrial	2.11 MGD	Copper, total [as Cu]	daily maximum 0.0135 mg/L, new	Jun 1, 2029	0.01 mg/L (11 values)	0.741×
SHENANDOAH MUNI SEW AUTH SCHUYLKILL CNTY	PA0070386	PA	Sewage plant, major	2 MGD	Copper, total [as Cu]	daily maximum 0.27 lb/d, new	Jun 1, 2029	under 3 values	—
SHENANDOAH MUNI SEW AUTH SCHUYLKILL CNTY	PA0070386	PA	Sewage plant, major	2 MGD	Copper, total [as Cu]	daily maximum 16.5 ug/L, new	Jun 1, 2029	under 3 values	—
SHENANDOAH MUNI SEW AUTH SCHUYLKILL CNTY	PA0070386	PA	Sewage plant, major	2 MGD	Copper, total [as Cu]	monthly average 0.18 lb/d, new	Jun 1, 2029	under 3 values	—
SHENANDOAH MUNI SEW AUTH SCHUYLKILL CNTY	PA0070386	PA	Sewage plant, major	2 MGD	Copper, total [as Cu]	monthly average 11.1 ug/L, new	Jun 1, 2029	under 3 values	—
SHOHOLA FALLS TRAILS END	PA0060577	PA	Industrial	.205 MGD	Copper, total [as Cu]	daily maximum 0.017 mg/L, new	Jun 1, 2029	0.00715 mg/L (8 values, 4 below detection)	—
SHOHOLA FALLS TRAILS END	PA0060577	PA	Industrial	.205 MGD	Copper, total [as Cu]	monthly average 0.011 mg/L, new	Jun 1, 2029	0.00705 mg/L (8 values, 8 below detection)	—
GREGORY POWER PARTNERS LLC	TX0137502	TX	Industrial	2.11 MGD	Copper, total [as Cu]	daily average 0.0064 mg/L, new	Jun 1, 2029	under 3 values	—
GREGORY POWER PARTNERS LLC	TX0137502	TX	Industrial	2.11 MGD	Copper, total [as Cu]	daily average 0.049 lb/d, new	Jun 1, 2029	under 3 values	—
GREGORY POWER PARTNERS LLC	TX0137502	TX	Industrial	2.11 MGD	Copper, total [as Cu]	daily maximum 0.103 lb/d, new	Jun 1, 2029	under 3 values	—
KaMin, LLC	GA0050270	GA	Industrial	1.86 MGD	Copper, total [as Cu]	daily average 0.0058 mg/L, new	Jul 1, 2029	under 3 values	—
KaMin, LLC	GA0050270	GA	Industrial	1.86 MGD	Copper, total [as Cu]	daily average 0.091 lb/d, new	Jul 1, 2029	under 3 values	—
KaMin, LLC	GA0050270	GA	Industrial	1.86 MGD	Copper, total [as Cu]	daily maximum 0.12 lb/d, new	Jul 1, 2029	under 3 values	—
KaMin, LLC	GA0050270	GA	Industrial	1.86 MGD	Copper, total [as Cu]	daily maximum 0.0074 mg/L, new	Jul 1, 2029	under 3 values	—
Louisiana Energy & Power Authority (LEPA) - Morgan City Power Plant	LA0126527	LA	Industrial	.323 MGD	Copper, total [as Cu]	daily maximum 0.064 mg/L, new	Jul 1, 2029	under 3 values	—
Louisiana Energy & Power Authority (LEPA) - Morgan City Power Plant	LA0126527	LA	Industrial	.323 MGD	Copper, total [as Cu]	monthly average 0.027 mg/L, new	Jul 1, 2029	under 3 values	—
St Martinville City of - STP	LA0040941	LA	Sewage plant, major	2.5 MGD	Copper, total [as Cu]	monthly average 0.24 lb/d, new	Jul 1, 2029	0.004 lb/d (3 values, 2 below detection)	—
St Martinville City of - STP	LA0040941	LA	Sewage plant, major	2.5 MGD	Copper, total [as Cu]	weekly average 0.56 lb/d, new	Jul 1, 2029	under 3 values	—
(Unknown Permittee)	SC0049366	SC	Sewage plant	1 MGD	Copper, total [as Cu]	daily maximum 0.11 lb/d, new	Jul 1, 2029	under 3 values	—
(Unknown Permittee)	SC0049366	SC	Sewage plant	1 MGD	Copper, total [as Cu]	daily maximum 12.7 ug/L, new	Jul 1, 2029	under 3 values	—
(Unknown Permittee)	SC0049366	SC	Sewage plant	1 MGD	Copper, total [as Cu]	monthly average 0.081 lb/d, new	Jul 1, 2029	under 3 values	—
(Unknown Permittee)	SC0049366	SC	Sewage plant	1 MGD	Copper, total [as Cu]	monthly average 9.7 ug/L, new	Jul 1, 2029	under 3 values	—
MONTOUR LLC	PA0008443	PA	Industrial, major	2.76 MGD	Copper, total [as Cu]	monthly average 39.2 ug/L, new	Aug 1, 2029	17.6 ug/L (9 values)	0.449×
MONTOUR LLC	PA0008443	PA	Industrial, major	2.76 MGD	Copper, total [as Cu]	daily maximum 61.2 ug/L, new	Aug 1, 2029	24.4 ug/L (9 values)	0.399×
PA AMER WATER CO	PA0062464	PA	Industrial	.275 MGD	Copper, total [as Cu]	monthly average 0.016 mg/L, new	Aug 1, 2029	0.006 mg/L (9 values, 1 below detection)	0.375×
PA AMER WATER CO	PA0062464	PA	Industrial	.275 MGD	Copper, total [as Cu]	daily maximum 0.024 mg/L, new	Aug 1, 2029	0.007 mg/L (9 values)	0.292×
PA AMER WATER CO	PA0062464	PA	Industrial	.275 MGD	Copper, total [as Cu]	monthly average 0.036 lb/d, new	Aug 1, 2029	0.005 lb/d (9 values)	0.139×
PA AMER WATER CO	PA0062464	PA	Industrial	.275 MGD	Copper, total [as Cu]	daily maximum 0.055 lb/d, new	Aug 1, 2029	0.006 lb/d (9 values)	0.109×
PALMERTON BORO MUNI AUTH CARBON CNTY	PA0023051	PA	Sewage plant	.75 MGD	Copper, total [as Cu]	monthly average 0.058 mg/L, new	Sep 1, 2029	0.00802 mg/L (9 values)	0.138×
PALMERTON BORO MUNI AUTH CARBON CNTY	PA0023051	PA	Sewage plant	.75 MGD	Copper, total [as Cu]	daily maximum 0.091 mg/L, new	Sep 1, 2029	under 3 values	—
BLUE RIDGE REAL ESTATE CO	PA0034118	PA	Industrial	.4 MGD	Copper, total [as Cu]	monthly average 0.015 lb/d, new	Dec 1, 2029	0.002 lb/d (6 values)	0.133×
BLUE RIDGE REAL ESTATE CO	PA0034118	PA	Industrial	.4 MGD	Copper, total [as Cu]	daily maximum 0.018 lb/d, new	Dec 1, 2029	0.002 lb/d (6 values)	0.111×
BLUE RIDGE REAL ESTATE CO	PA0034118	PA	Industrial	.4 MGD	Copper, total [as Cu]	monthly average 0.03 mg/L, new	Dec 1, 2029	0.000036 mg/L (6 values)	0.0012×
BLUE RIDGE REAL ESTATE CO	PA0034118	PA	Industrial	.4 MGD	Copper, total [as Cu]	daily maximum 0.03 mg/L, new	Dec 1, 2029	0.0000352 mg/L (6 values)	0.00117×
HAMPTON TWP ALLEGHENY CNTY	PA0043729	PA	Sewage plant, major	3.2 MGD	Copper, total [as Cu]	monthly average 24.3 ug/L, new	Feb 1, 2030	10 ug/L (9 values)	0.412×
HAMPTON TWP ALLEGHENY CNTY	PA0043729	PA	Sewage plant, major	3.2 MGD	Copper, total [as Cu]	daily maximum 38 ug/L, new	Feb 1, 2030	10 ug/L (9 values)	0.263×
CITY OF SIOUX RAPIDS	IA0042951	IA	Sewage plant	.2 MGD	Copper, total [as Cu]	30-day average 0.2385 mg/L, new	Mar 1, 2030	under 3 values	—
CITY OF SIOUX RAPIDS	IA0042951	IA	Sewage plant	.2 MGD	Copper, total [as Cu]	30-day average 0.166 lb/d, new	Mar 1, 2030	under 3 values	—
CITY OF SIOUX RAPIDS	IA0042951	IA	Sewage plant	.2 MGD	Copper, total [as Cu]	daily maximum 0.166 lb/d, new	Mar 1, 2030	under 3 values	—
CITY OF SIOUX RAPIDS	IA0042951	IA	Sewage plant	.2 MGD	Copper, total [as Cu]	daily maximum 0.2385 mg/L, new	Mar 1, 2030	under 3 values	—
ROBINSON TWP MUNI AUTH ALLEGHENY CNTY	PA0036293	PA	Sewage plant, major	1 MGD	Copper, total [as Cu]	monthly average 21.1 ug/L, new	Apr 1, 2030	6 ug/L (3 values)	0.284×
ROBINSON TWP MUNI AUTH ALLEGHENY CNTY	PA0036293	PA	Sewage plant, major	1 MGD	Copper, total [as Cu]	monthly average 0.18 lb/d, new	Apr 1, 2030	0.03 lb/d (3 values)	0.167×
ROBINSON TWP MUNI AUTH ALLEGHENY CNTY	PA0036293	PA	Sewage plant, major	1 MGD	Copper, total [as Cu]	weekly average 32.8 ug/L, new	Apr 1, 2030	under 3 values	—
ROBINSON TWP MUNI AUTH ALLEGHENY CNTY	PA0036293	PA	Sewage plant, major	1 MGD	Copper, total [as Cu]	weekly average 0.27 lb/d, new	Apr 1, 2030	under 3 values	—
Alexandria Lake Area Sanitary District	MN0040738	MN	Sewage plant, major	4.7 MGD	Copper, total [as Cu]	daily maximum 2.437 kg/d (Mar, Jun, Sep, Dec), new	Jun 1, 2030	under 3 values	—
Alexandria Lake Area Sanitary District	MN0040738	MN	Sewage plant, major	4.7 MGD	Copper, total [as Cu]	monthly average 1.618 kg/d (Mar, Jun, Sep, Dec), new	Jun 1, 2030	under 3 values	—
FRENCHCREEK TWP VENANGO CNTY	PA0030104	PA	Industrial	.45 MGD	Copper, total [as Cu]	monthly average 0.02 mg/L, new	Jul 1, 2030	0.018 mg/L (9 values)	0.9×
FRENCHCREEK TWP VENANGO CNTY	PA0030104	PA	Industrial	.45 MGD	Copper, total [as Cu]	daily maximum 0.032 mg/L, new	Jul 1, 2030	0.022 mg/L (9 values)	0.688×
FRENCHCREEK TWP VENANGO CNTY	PA0030104	PA	Industrial	.45 MGD	Copper, total [as Cu]	monthly average 0.077 lb/d, new	Jul 1, 2030	0.03 lb/d (9 values)	0.39×
FRENCHCREEK TWP VENANGO CNTY	PA0030104	PA	Industrial	.45 MGD	Copper, total [as Cu]	daily maximum 0.12 lb/d, new	Jul 1, 2030	0.04 lb/d (9 values)	0.333×
Alexandria Lake Area Sanitary District	MN0040738	MN	Sewage plant, major	4.7 MGD	Copper, total [as Cu]	daily maximum 2.437 kg/d (Mar, Jun, Sep, Dec), new	Jul 1, 2030	under 3 values	—
Alexandria Lake Area Sanitary District	MN0040738	MN	Sewage plant, major	4.7 MGD	Copper, total [as Cu]	monthly average 1.618 kg/d (Mar, Jun, Sep, Dec), new	Jul 1, 2030	under 3 values	—
TOWAMENCIN MUNICIPAL AUTHORITY	PA0039004	PA	Sewage plant, major	19.5 MGD	Copper, total [as Cu]	monthly average 0.01 mg/L, tighter	Aug 1, 2030	0.005 mg/L (9 values)	0.5×
TOWAMENCIN MUNICIPAL AUTHORITY	PA0039004	PA	Sewage plant, major	19.5 MGD	Copper, total [as Cu]	daily maximum 0.015 mg/L, tighter	Aug 1, 2030	0.006 mg/L (9 values)	0.4×
TOWAMENCIN MUNICIPAL AUTHORITY	PA0039004	PA	Sewage plant, major	19.5 MGD	Copper, total [as Cu]	daily maximum 0.81 lb/d, tighter	Aug 1, 2030	0.24 lb/d (9 values)	0.296×
TOWAMENCIN MUNICIPAL AUTHORITY	PA0039004	PA	Sewage plant, major	19.5 MGD	Copper, total [as Cu]	monthly average 0.54 lb/d, tighter	Aug 1, 2030	0.15 lb/d (9 values)	0.278×
UPPER MORELAND HATBORO JT SEW AUTH	PA0025976	PA	Sewage plant, major	7.189 MGD	Copper, total [as Cu]	monthly average 0.0233 mg/L, tighter	Oct 1, 2030	0.015 mg/L (9 values)	0.644×
CITY OF BELLE PLAINE	IA0065404	IA	Sewage plant	1.16 MGD	Copper, total [as Cu]	30-day average 0.0169 mg/L, new	Oct 1, 2030	under 3 values	—
CITY OF BELLE PLAINE	IA0065404	IA	Sewage plant	1.16 MGD	Copper, total [as Cu]	30-day average 0.0857 lb/d, new	Oct 1, 2030	under 3 values	—
CITY OF BELLE PLAINE	IA0065404	IA	Sewage plant	1.16 MGD	Copper, total [as Cu]	daily maximum 0.0269 mg/L, new	Oct 1, 2030	under 3 values	—
CITY OF BELLE PLAINE	IA0065404	IA	Sewage plant	1.16 MGD	Copper, total [as Cu]	daily maximum 0.137 lb/d, new	Oct 1, 2030	under 3 values	—
WASHINGTON TWP & EAST WASHINGTON BORO JT AUTH WASHINGTON CNTY	PA0026212	PA	Sewage plant, major	9.77 MGD	Copper, total [as Cu]	daily maximum 2.4 lb/d, new	Jan 1, 2031	0.95 lb/d (4 values)	0.396×
WASHINGTON TWP & EAST WASHINGTON BORO JT AUTH WASHINGTON CNTY	PA0026212	PA	Sewage plant, major	9.77 MGD	Copper, total [as Cu]	daily maximum 29.5 ug/L, new	Jan 1, 2031	8.8 ug/L (4 values)	0.298×
WASHINGTON TWP & EAST WASHINGTON BORO JT AUTH WASHINGTON CNTY	PA0026212	PA	Sewage plant, major	9.77 MGD	Copper, total [as Cu]	monthly average 1.86 lb/d, new	Jan 1, 2031	0.6 lb/d (4 values, 2 below detection)	—
WASHINGTON TWP & EAST WASHINGTON BORO JT AUTH WASHINGTON CNTY	PA0026212	PA	Sewage plant, major	9.77 MGD	Copper, total [as Cu]	monthly average 22.8 ug/L, new	Jan 1, 2031	5.8 ug/L (4 values, 2 below detection)	—
PINE CREEK MUNI AUTH CLINTON CNTY	PA0027553	PA	Sewage plant, major	1.6 MGD	Copper, total [as Cu]	monthly average 17 ug/L, tighter	Apr 1, 2031	10.48 ug/L (9 values)	0.616×
PINE CREEK MUNI AUTH CLINTON CNTY	PA0027553	PA	Sewage plant, major	1.6 MGD	Copper, total [as Cu]	daily maximum 27 ug/L, tighter	Apr 1, 2031	14 ug/L (9 values)	0.519×
PINE CREEK MUNI AUTH CLINTON CNTY	PA0027553	PA	Sewage plant, major	1.6 MGD	Copper, total [as Cu]	monthly average 0.23 lb/d, tighter	Apr 1, 2031	0.08 lb/d (9 values)	0.348×
PINE CREEK MUNI AUTH CLINTON CNTY	PA0027553	PA	Sewage plant, major	1.6 MGD	Copper, total [as Cu]	daily maximum 0.36 lb/d, tighter	Apr 1, 2031	0.1 lb/d (9 values)	0.278×
CITY OF OSCEOLA	IA0082953	IA	Industrial	—	Copper, total [as Cu]	30-day average 0.087 lb/d, new	Jul 1, 2031	under 3 values	—
CITY OF OSCEOLA	IA0082953	IA	Industrial	—	Copper, total [as Cu]	30-day average 0.017 mg/L, new	Jul 1, 2031	under 3 values	—
CITY OF OSCEOLA	IA0082953	IA	Industrial	—	Copper, total [as Cu]	daily maximum 0.139 lb/d, new	Jul 1, 2031	under 3 values	—
CITY OF OSCEOLA	IA0082953	IA	Industrial	—	Copper, total [as Cu]	daily maximum 0.027 mg/L, new	Jul 1, 2031	under 3 values	—

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