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Plants facing new discharge limits — by state and pollutant

for Aluminum, total [as Al]: 17 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Dec 1, 2026 and Apr 1, 2031 (56 limits); 0 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 11 · IA 3 · TX 3

By pollutant: all · Nitrogen, ammonia total [as N] 526 · Chlorine, total residual 272 · Phosphorus, total [as P] 106 · E. coli 103 · Copper, total [as Cu] 85 · Copper, total recoverable 63 · Solids, total suspended 60 · Chloride [as Cl] 56 · BOD, carbonaceous [5 day, 20 C] 48 · Zinc, total [as Zn] 39 · Zinc, total recoverable 36 · BOD, 5-day, 20 deg. C 35 · pH 31 · Cyanide, free available 30 · Nitrogen, total [as N] 28 · Iron, total [as Fe] 22 · Mercury, total [as Hg] 22 · Toxicity [acute], Ceriodaphnia dubia 22 · Toxicity [acute], Pimephales promelas [Fathead Minnow] 21 · Selenium, total [as Se] 20 · Di[2-ethylhexyl] phthalate [DEHP] 19 · E. coli, MTEC-MF 19 · Mercury, total low level 19 · Toxicity [chronic], Ceriodaphnia dubia 18 · Toxicity [chronic], Pimephales promelas [Fathead Minnow] 18

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
HOMER CITY GENERATION LPPA0005037PAIndustrial, major20.541 MGDAluminum, total [as Al]daily maximum 0.75 mg/L, newDec 1, 2026under 3 values—
HOMER CITY GENERATION LPPA0005037PAIndustrial, major20.541 MGDAluminum, total [as Al]monthly average 0.75 mg/L, newDec 1, 2026under 3 values—
CEDAR FALLS MUNICIPAL ELECTRIC UTILITYIA0002534IAIndustrial10.4 MGDAluminum, total [as Al]30-day average 0.89 mg/L, newMay 1, 2027under 3 values—
CEDAR FALLS MUNICIPAL ELECTRIC UTILITYIA0002534IAIndustrial10.4 MGDAluminum, total [as Al]daily maximum 2.5 mg/L, newMay 1, 2027under 3 values—
LAWRENCEVILLE ACQUISITION COMPANY, LLCPA0255840PAIndustrial.277 MGDAluminum, total [as Al]daily maximum 0.752 mg/L, newMay 1, 20270.1 mg/L (9 values, 8 below detection)—
LAWRENCEVILLE ACQUISITION COMPANY, LLCPA0255840PAIndustrial.277 MGDAluminum, total [as Al]monthly average 0.75 mg/L, newMay 1, 20270.1 mg/L (9 values, 9 below detection)—
TMS INTL LLCPA0253553PAIndustrial.05 MGDAluminum, total [as Al]daily maximum 0.396 mg/L, newSep 1, 20270.0113 mg/L (9 values, 3 below detection)0.0285×
TMS INTL LLCPA0253553PAIndustrial.05 MGDAluminum, total [as Al]instantaneous maximum 0.75 mg/L, newSep 1, 2027under 3 values—
TMS INTL LLCPA0253553PAIndustrial.05 MGDAluminum, total [as Al]monthly average 0.198 mg/L, newSep 1, 20270.01065 mg/L (9 values, 7 below detection)—
IOWA AMERICAN WATER COMPANYIA0079430IAIndustrial—Aluminum, total [as Al]30-day average 93.1 mg/L, newNov 1, 2027under 3 values—
IOWA AMERICAN WATER COMPANYIA0079430IAIndustrial—Aluminum, total [as Al]daily maximum 93.1 mg/L, newNov 1, 2027under 3 values—
IOWA AMERICAN WATER COMPANYIA0079430IAIndustrial—Aluminum, total [as Al]30-day average 93.1 mg/L, newNov 1, 2027under 3 values—
IOWA AMERICAN WATER COMPANYIA0079430IAIndustrial—Aluminum, total [as Al]daily maximum 93.1 mg/L, newNov 1, 2027under 3 values—
IOWA AMERICAN WATER COMPANYIA0079430IAIndustrial—Aluminum, total [as Al]30-day average 1215.4 lb/d, newNov 1, 2027under 3 values—
IOWA AMERICAN WATER COMPANYIA0079430IAIndustrial—Aluminum, total [as Al]daily maximum 1215.4 lb/d, newNov 1, 2027under 3 values—
WYMAN-GORDON FORGINGS LPTX0042129TXIndustrial, major—Aluminum, total [as Al]daily average 0.834 mg/L, newNov 1, 2027under 3 values—
WYMAN-GORDON FORGINGS LPTX0042129TXIndustrial, major—Aluminum, total [as Al]daily maximum 1.77 mg/L, newNov 1, 2027under 3 values—
KUTZTOWN BORO BERKS CNTYPA0031135PASewage plant, major1.5 MGDAluminum, total [as Al]monthly average 1.25 mg/L, newDec 1, 20271.02 mg/L (7 values)0.816×
KUTZTOWN BORO BERKS CNTYPA0031135PASewage plant, major1.5 MGDAluminum, total [as Al]daily maximum 1.95 mg/L, newDec 1, 20271.32 mg/L (7 values)0.677×
KUTZTOWN BORO BERKS CNTYPA0031135PASewage plant, major1.5 MGDAluminum, total [as Al]monthly average 15.6 lb/d, newDec 1, 20277.51 lb/d (7 values)0.481×
KUTZTOWN BORO BERKS CNTYPA0031135PASewage plant, major1.5 MGDAluminum, total [as Al]daily maximum 24.4 lb/d, newDec 1, 20279.68 lb/d (7 values)0.397×
WESTINGHOUSE ELEC COPA0000892PAIndustrial.109 MGDAluminum, total [as Al]daily maximum 0.75 mg/L, newJan 1, 20280.64 mg/L (9 values)0.853×
WESTINGHOUSE ELEC COPA0000892PAIndustrial.109 MGDAluminum, total [as Al]monthly average 0.75 mg/L, newJan 1, 20280.55 mg/L (9 values)0.733×
CONEMAUGH TWP SOMERSET CNTYPA0216399PAIndustrial.643 MGDAluminum, total [as Al]daily maximum 0.75 mg/L, tighterJan 1, 2028under 3 values—
CONEMAUGH TWP SOMERSET CNTYPA0216399PAIndustrial.643 MGDAluminum, total [as Al]daily maximum 0.75 mg/L, tighterJan 1, 2028under 3 values—
CONEMAUGH TWP SOMERSET CNTYPA0216399PAIndustrial.643 MGDAluminum, total [as Al]daily maximum 0.75 mg/L, tighterJan 1, 2028under 3 values—
WESTINGHOUSE ELEC COPA0000892PAIndustrial.109 MGDAluminum, total [as Al]annual total 256 lb/yr, newJan 1, 2028under 3 values—
WYOMISSING VALLEY JT MUNI AUTH BERKS CNTYPA0026638PASewage plant, major4 MGDAluminum, total [as Al]monthly average 0.78 mg/L, newMay 1, 20280.47 mg/L (9 values)0.603×
WYOMISSING VALLEY JT MUNI AUTH BERKS CNTYPA0026638PASewage plant, major4 MGDAluminum, total [as Al]daily maximum 1.22 mg/L, newMay 1, 20280.51 mg/L (9 values)0.418×
WYOMISSING VALLEY JT MUNI AUTH BERKS CNTYPA0026638PASewage plant, major4 MGDAluminum, total [as Al]monthly average 26 lb/d, newMay 1, 20287 lb/d (9 values)0.269×
WYOMISSING VALLEY JT MUNI AUTH BERKS CNTYPA0026638PASewage plant, major4 MGDAluminum, total [as Al]daily maximum 40.7 lb/d, newMay 1, 20289 lb/d (9 values)0.221×
ROBESONIA WERNERSVILLE MUNI AUTH BERKS CNTYPA0031062PASewage plant, major1.4 MGDAluminum, total [as Al]monthly average 1.27 mg/L, newJul 1, 20280.69 mg/L (9 values)0.543×
ROBESONIA WERNERSVILLE MUNI AUTH BERKS CNTYPA0031062PASewage plant, major1.4 MGDAluminum, total [as Al]daily maximum 1.89 mg/L, newJul 1, 20280.67 mg/L (9 values)0.354×
ROBESONIA WERNERSVILLE MUNI AUTH BERKS CNTYPA0031062PASewage plant, major1.4 MGDAluminum, total [as Al]monthly average 14.9 lb/d, newJul 1, 20283.71 lb/d (9 values)0.249×
ROBESONIA WERNERSVILLE MUNI AUTH BERKS CNTYPA0031062PASewage plant, major1.4 MGDAluminum, total [as Al]daily maximum 22.1 lb/d, newJul 1, 20284.17 lb/d (9 values)0.189×
US STEEL CORPPA0004073PAIndustrial, major24.602 MGDAluminum, total [as Al]daily maximum 1.95 mg/L, newAug 1, 20280.48 mg/L (9 values)0.246×
US STEEL CORPPA0004073PAIndustrial, major24.602 MGDAluminum, total [as Al]monthly average 1.25 mg/L, newAug 1, 20280.291 mg/L (9 values)0.233×
ACTON MUDTX0102598TXIndustrial2.5 MGDAluminum, total [as Al]daily maximum 1.64 mg/L, newOct 1, 20280.4375 mg/L (12 values)0.267×
ACTON MUDTX0102598TXIndustrial2.5 MGDAluminum, total [as Al]daily average 0.776 mg/L, newOct 1, 2028under 3 values—
LYONDELL CHEMICAL COMPANYTX0069493TXIndustrial, major3.8 MGDAluminum, total [as Al]daily maximum 2.339 mg/L, newJan 1, 20291.47 mg/L (7 values)0.628×
LYONDELL CHEMICAL COMPANYTX0069493TXIndustrial, major3.8 MGDAluminum, total [as Al]daily maximum 2.216 mg/L, newJan 1, 20290.831 mg/L (7 values)0.375×
LYONDELL CHEMICAL COMPANYTX0069493TXIndustrial, major3.8 MGDAluminum, total [as Al]daily maximum 3.649 mg/L, newJan 1, 20291.3 mg/L (7 values)0.356×
LYONDELL CHEMICAL COMPANYTX0069493TXIndustrial, major3.8 MGDAluminum, total [as Al]daily maximum 1.766 mg/L, newJan 1, 20290.325 mg/L (7 values)0.184×
LYONDELL CHEMICAL COMPANYTX0069493TXIndustrial, major3.8 MGDAluminum, total [as Al]daily maximum 1.766 mg/L, newJan 1, 20290.0755 mg/L (8 values)0.0428×
SHENANDOAH MUNI SEW AUTH SCHUYLKILL CNTYPA0070386PASewage plant, major2 MGDAluminum, total [as Al]daily maximum 766 ug/L, newJun 1, 2029under 3 values—
SHENANDOAH MUNI SEW AUTH SCHUYLKILL CNTYPA0070386PASewage plant, major2 MGDAluminum, total [as Al]daily maximum 12.8 lb/d, newJun 1, 2029under 3 values—
SHENANDOAH MUNI SEW AUTH SCHUYLKILL CNTYPA0070386PASewage plant, major2 MGDAluminum, total [as Al]monthly average 750 ug/L, newJun 1, 2029under 3 values—
SHENANDOAH MUNI SEW AUTH SCHUYLKILL CNTYPA0070386PASewage plant, major2 MGDAluminum, total [as Al]monthly average 12.5 lb/d, newJun 1, 2029under 3 values—
PRAIRIE FARMS DAIRYIA0003808IAIndustrial.18 MGDAluminum, total [as Al]30-day average 7.27 lb/d, newMay 1, 2030under 3 values—
PRAIRIE FARMS DAIRYIA0003808IAIndustrial.18 MGDAluminum, total [as Al]30-day average 0.89 mg/L, newMay 1, 2030under 3 values—
PRAIRIE FARMS DAIRYIA0003808IAIndustrial.18 MGDAluminum, total [as Al]daily maximum 20.4 lb/d, newMay 1, 2030under 3 values—
PRAIRIE FARMS DAIRYIA0003808IAIndustrial.18 MGDAluminum, total [as Al]daily maximum 2.5 mg/L, newMay 1, 2030under 3 values—
PINE CREEK MUNI AUTH CLINTON CNTYPA0027553PASewage plant, major1.6 MGDAluminum, total [as Al]daily maximum 0.759 mg/L, tighterApr 1, 20310.165 mg/L (9 values)0.217×
PINE CREEK MUNI AUTH CLINTON CNTYPA0027553PASewage plant, major1.6 MGDAluminum, total [as Al]monthly average 0.75 mg/L, tighterApr 1, 20310.1 mg/L (9 values)0.133×
PINE CREEK MUNI AUTH CLINTON CNTYPA0027553PASewage plant, major1.6 MGDAluminum, total [as Al]daily maximum 10.1 lb/d, tighterApr 1, 20311.14 lb/d (9 values)0.113×
PINE CREEK MUNI AUTH CLINTON CNTYPA0027553PASewage plant, major1.6 MGDAluminum, total [as Al]monthly average 10 lb/d, tighterApr 1, 20311 lb/d (9 values)0.1×

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