In Oregon: 16 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Jun 1, 2027 and May 1, 2030 (56 limits); 8 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: all · 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
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×
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×
PORTLAND, CITY OF	OR0026891	OR	Sewage plant, major	8.3 MGD	Chlorine, total residual	monthly average 0.16 mg/L, tighter	Jun 1, 2028	0.465 mg/L (12 values)	2.91×
PORTLAND, CITY OF	OR0026891	OR	Sewage plant, major	8.3 MGD	Chlorine, total residual	daily maximum 0.42 mg/L, tighter	Jun 1, 2028	0.75 mg/L (12 values)	1.79×
ASC SUNSTONE CIRCUITS LLC	OR0031127	OR	Industrial	—	Copper, total recoverable	monthly average 0.02 mg/L, tighter	Aug 1, 2028	0.04372 mg/L (11 values)	2.19×
ASC SUNSTONE CIRCUITS LLC	OR0031127	OR	Industrial	—	Copper, total recoverable	daily maximum 0.041 mg/L, tighter	Aug 1, 2028	0.0621 mg/L (11 values)	1.51×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	daily maximum 0.05 mg/L, new	Feb 1, 2029	0.41 mg/L (7 values)	8.2×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	daily maximum 0.05 mg/L, new	Feb 1, 2029	0.34 mg/L (7 values)	6.8×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	monthly average 0.05 mg/L, new	Feb 1, 2029	0.34 mg/L (7 values)	6.8×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	daily maximum 0.05 mg/L, new	Feb 1, 2029	0.33 mg/L (7 values)	6.6×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	daily maximum 0.05 mg/L, new	Feb 1, 2029	0.33 mg/L (7 values)	6.6×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	daily maximum 0.05 mg/L, new	Feb 1, 2029	0.33 mg/L (7 values)	6.6×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	daily maximum 0.05 mg/L, new	Feb 1, 2029	0.33 mg/L (7 values)	6.6×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	daily maximum 0.05 mg/L, new	Feb 1, 2029	0.33 mg/L (7 values)	6.6×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	monthly average 0.05 mg/L, new	Feb 1, 2029	0.26 mg/L (7 values)	5.2×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	monthly average 0.05 mg/L, new	Feb 1, 2029	0.26 mg/L (7 values)	5.2×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	monthly average 0.05 mg/L, new	Feb 1, 2029	0.26 mg/L (7 values)	5.2×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	monthly average 0.05 mg/L, new	Feb 1, 2029	0.26 mg/L (7 values)	5.2×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	monthly average 0.05 mg/L, new	Feb 1, 2029	0.26 mg/L (7 values)	5.2×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	monthly average 0.05 mg/L, new	Feb 1, 2029	0.26 mg/L (7 values)	5.2×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	daily maximum 0.05 mg/L, new	Feb 1, 2029	0.215 mg/L (6 values)	4.3×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	daily maximum 0.05 mg/L, new	Feb 1, 2029	0.21 mg/L (7 values)	4.2×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	daily maximum 0.05 mg/L, new	Feb 1, 2029	0.185 mg/L (6 values)	3.7×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	monthly average 0.05 mg/L, new	Feb 1, 2029	0.18 mg/L (7 values)	3.6×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	daily maximum 0.05 mg/L, new	Feb 1, 2029	0.1 mg/L (6 values)	2×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	monthly average 0.05 mg/L, new	Feb 1, 2029	0.085 mg/L (6 values)	1.7×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	monthly average 0.05 mg/L, new	Feb 1, 2029	0.075 mg/L (6 values)	1.5×
PORT OF TILLAMOOK BAY	OR0022918	OR	Sewage plant	.56 MGD	pH	daily maximum 7 SU (Jan, Feb, Mar, Apr, Nov, Dec), tighter	Feb 1, 2029	7.325 SU (4 values)	1.05×
GARIBALDI, CITY OF	OR0020362	OR	Sewage plant	.5 MGD	Chlorine, total residual	daily maximum 0.05 mg/L, tighter	Sep 30, 2029	0.18 mg/L (12 values)	3.6×
GARIBALDI, CITY OF	OR0020362	OR	Sewage plant	.5 MGD	Chlorine, total residual	monthly average 0.05 mg/L, tighter	Sep 30, 2029	0.06 mg/L (12 values)	1.2×
Pacific Seafood - Warrenton, LLC	OR0055002	OR	Industrial	—	Enterococci	monthly geometric mean 35 #/100mL, new	Mar 1, 2030	684 #/100mL (11 values)	19.5×
Pacific Seafood - Warrenton, LLC	OR0055002	OR	Industrial	—	Enterococci - % samples exceeding limit	total 10 %, new	Mar 1, 2030	78 % (11 values)	7.8×
PORTLAND, CITY OF	OR0026905	OR	Sewage plant, major	100 MGD	Thermal Discharge	monthly average 14100 mkcal/day (Jun–Sep), new	Jun 1, 2027	under 3 values	—
US ARMY CORPS OF ENGINEERS, BONNEVILLE LOCK AND DAM	OR0022624	OR	Federal	—	Chlorine, total residual	daily maximum 1.1 mg/L, new	Jan 1, 2028	1.095 mg/L (8 values)	0.995×
GRAND RONDE SANITARY DISTRICT	OR0031453	OR	Sewage plant	.38 MGD	Chlorine, total residual	monthly average 0.05 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), tighter	Jan 1, 2028	0.04 mg/L (6 values)	0.8×
VERNONIA, CITY OF	OR0022560	OR	Sewage plant	.5 MGD	Nitrogen, ammonia total [as N]	monthly average 10 mg/L (May–Nov), new	Feb 1, 2028	7.8 mg/L (5 values)	0.78×
VERNONIA, CITY OF	OR0022560	OR	Sewage plant	.5 MGD	Nitrogen, ammonia total [as N]	daily maximum 20 mg/L (May–Nov), new	Feb 1, 2028	10.2 mg/L (5 values)	0.51×
ASC SUNSTONE CIRCUITS LLC	OR0031127	OR	Industrial	—	Cadmium, total recoverable	daily maximum 0.011 mg/L, tighter	Aug 1, 2028	0.00025 mg/L (11 values, 11 below detection)	—
ASC SUNSTONE CIRCUITS LLC	OR0031127	OR	Industrial	—	Cadmium, total recoverable	monthly average 0.005 mg/L, tighter	Aug 1, 2028	0.00025 mg/L (11 values, 11 below detection)	—
Swiss Krono, OR LLC	OR0002542	OR	Industrial	—	Nitrogen, ammonia total [as N]	monthly average 2.1 mg/L, new	Oct 1, 2028	1.36 mg/L (11 values, 1 below detection)	0.648×
Swiss Krono, OR LLC	OR0002542	OR	Industrial	—	Nitrogen, ammonia total [as N]	daily maximum 2.9 mg/L, new	Oct 1, 2028	1.36 mg/L (11 values, 1 below detection)	0.469×
Swiss Krono, OR LLC	OR0002542	OR	Industrial	—	Phosphorus, total [as P]	semi-annual average 3.5 lb/d, new	Oct 1, 2028	under 3 values	—
BAY CITY, CITY OF	OR0022578	OR	Sewage plant	.21 MGD	Nitrogen, ammonia total [as N]	monthly average 4.1 mg/L (May–Oct), new	Nov 1, 2028	2.35 mg/L (4 values)	0.573×
BAY CITY, CITY OF	OR0022578	OR	Sewage plant	.21 MGD	Nitrogen, ammonia total [as N]	daily maximum 12.1 mg/L (May–Oct), new	Nov 1, 2028	3.6 mg/L (4 values)	0.298×
BAY CITY, CITY OF	OR0022578	OR	Sewage plant	.21 MGD	Nitrogen, ammonia total [as N]	monthly average 8.8 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), new	Nov 1, 2028	2.049 mg/L (6 values)	0.233×
BAY CITY, CITY OF	OR0022578	OR	Sewage plant	.21 MGD	Nitrogen, ammonia total [as N]	daily maximum 25.9 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), new	Nov 1, 2028	2.748 mg/L (6 values)	0.106×
U.S. Army Corps of Engineers-McNary Lock and Dam	OR0055000	OR	Federal	—	Chlorine, total residual	monthly average 0.05 mg/L, new	Feb 1, 2029	0.05 mg/L (6 values)	1×
SUTHERLIN, CITY OF	OR0020842	OR	Sewage plant	1.3 MGD	Nitrite + Nitrate total [as N]	monthly average 10 mg/L, new	Feb 1, 2029	3.2 mg/L (5 values)	0.32×
SUTHERLIN, CITY OF	OR0020842	OR	Sewage plant	1.3 MGD	Nitrite + Nitrate total [as N]	daily maximum 24.5 mg/L, new	Feb 1, 2029	4 mg/L (5 values)	0.163×
PORT OF TILLAMOOK BAY	OR0022918	OR	Sewage plant	.56 MGD	Nitrogen, ammonia total [as N]	daily maximum 33 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), tighter	Feb 1, 2029	under 3 values	—
PORT OF TILLAMOOK BAY	OR0022918	OR	Sewage plant	.56 MGD	Nitrogen, ammonia total [as N]	monthly average 13.1 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), tighter	Feb 1, 2029	under 3 values	—
WILLAMETTE LEADERSHIP ACADEMY	OR0027235	OR	Industrial	—	Chlorine, total residual	daily maximum 0.05 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), tighter	Dec 1, 2029	0.03 mg/L (5 values)	0.6×
WILLAMETTE LEADERSHIP ACADEMY	OR0027235	OR	Industrial	—	Chlorine, total residual	monthly average 0.05 mg/L (Jan, Feb, Mar, Apr, Nov, Dec), tighter	Dec 1, 2029	0.01 mg/L (5 values)	0.2×
CANNON BEACH, CITY OF	OR0020222	OR	Sewage plant	.5 MGD	Excess thermal load	maximum 7-day average 2.2 mkcal/day, new	Mar 1, 2030	2 mkcal/day (11 values)	0.909×
Confederated Tribes of the Umatilla Indian Reservation	OR0044717	OR	Industrial	—	Excess thermal load	maximum 7-day average 26.2 mkcal/day (Jun–Sep), new	May 1, 2030	under 3 values	—
Confederated Tribes of the Umatilla Indian Reservation	OR0044717	OR	Industrial	—	Excess thermal load	maximum 7-day average 0 MBTU/d (Jun–Sep), new	May 1, 2030	19.04 MBTU/d (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=OR&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