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Plants facing new discharge limits — by state and pollutant

In Arkansas, for Copper, total recoverable: 4 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Jul 1, 2027 and Jun 1, 2029 (17 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: all · OH 17 · NJ 16 · VA 10 · AR 4 · GA 4 · FL 3 · MO 3 · CA 1 · IN 1 · KY 1 · MT 1 · OR 1 · WV 1

By pollutant: all · Chlorine, total residual 45 · Copper, total recoverable 4 · Phosphorus, total [as P] 4 · Mercury, total recoverable 2 · Nitrogen, ammonia total [as N] 2 · Zinc, total recoverable 2 · BOD, carbonaceous [5 day, 20 C] 1 · Chloride [as Cl] 1 · Coliform, fecal general 1 · Cyanide, total recoverable 1 · E. coli 1 · Endrin 1 · Lead, total recoverable 1 · Nitrite + Nitrate total [as N] 1 · Nitrogen, nitrate total [as NO3] 1 · Oil & Grease 1 · Solids, total suspended 1

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
Lanxess Corporation - Central PlantAR0001171ARIndustrial, major—Copper, total recoverablemonthly average 12.2 ug/L, newJul 1, 202711 ug/L (9 values)0.902×
Lanxess Corporation - Central PlantAR0001171ARIndustrial, major—Copper, total recoverabledaily maximum 24.48 ug/L, newJul 1, 202711 ug/L (9 values)0.449×
Wayne Farms LLCAR0038768ARIndustrial1.3 MGDCopper, total recoverablemonthly average 0.14 lb/d, newJul 1, 20270.0204 lb/d (11 values)0.146×
Wayne Farms LLCAR0038768ARIndustrial1.3 MGDCopper, total recoverabledaily maximum 0.28 lb/d, newJul 1, 20270.0204 lb/d (11 values)0.0729×
Wayne Farms LLCAR0038768ARIndustrial1.3 MGDCopper, total recoverablemonthly average 12.89 mg/L, newJul 1, 20270.0041 mg/L (11 values)0.000318×
Wayne Farms LLCAR0038768ARIndustrial1.3 MGDCopper, total recoverabledaily maximum 25.87 mg/L, newJul 1, 20270.0041 mg/L (11 values)0.000158×
Hope, City of - Bois D'Arc WWTPAR0038466ARSewage plant, major1.2 MGDCopper, total recoverablemonthly average 10.2 ug/L, tighterMar 1, 20294.1 ug/L (7 values)0.402×
Hope, City of - Bois D'Arc WWTPAR0038466ARSewage plant, major1.2 MGDCopper, total recoverable7-day average 20.4 ug/L, tighterMar 1, 20294.1 ug/L (7 values)0.201×
Hope, City of - Bois D'Arc WWTPAR0038466ARSewage plant, major1.2 MGDCopper, total recoverablemonthly average 0.1 lb/d, tighterMar 1, 20290 lb/d (7 values)0×
St. Joseph's Utility Operating Company, LLC-St. Joseph's Glenn SubdivisionAR0050181ARIndustrial.06 MGDCopper, total recoverablemonthly average 10.2 ug/L (Jun–Nov), tighterJun 1, 20296.4 ug/L (3 values)0.627×
St. Joseph's Utility Operating Company, LLC-St. Joseph's Glenn SubdivisionAR0050181ARIndustrial.06 MGDCopper, total recoverabledaily maximum 20.4 ug/L (Jun–Nov), tighterJun 1, 20296.4 ug/L (3 values)0.314×
St. Joseph's Utility Operating Company, LLC-St. Joseph's Glenn SubdivisionAR0050181ARIndustrial.06 MGDCopper, total recoverablemonthly average 0.0051 lb/d (Jun–Nov), tighterJun 1, 20290.001 lb/d (3 values)0.196×
St. Joseph's Utility Operating Company, LLC-St. Joseph's Glenn SubdivisionAR0050181ARIndustrial.06 MGDCopper, total recoverabledaily maximum 0.01 lb/d (Jun–Nov), tighterJun 1, 20290.001 lb/d (3 values)0.1×
St. Joseph's Utility Operating Company, LLC-St. Joseph's Glenn SubdivisionAR0050181ARIndustrial.06 MGDCopper, total recoverabledaily maximum 90.7 ug/L (Jan, Feb, Mar, Apr, May, Dec), tighterJun 1, 2029under 3 values—
St. Joseph's Utility Operating Company, LLC-St. Joseph's Glenn SubdivisionAR0050181ARIndustrial.06 MGDCopper, total recoverabledaily maximum 0.045 lb/d (Jan, Feb, Mar, Apr, May, Dec), tighterJun 1, 2029under 3 values—
St. Joseph's Utility Operating Company, LLC-St. Joseph's Glenn SubdivisionAR0050181ARIndustrial.06 MGDCopper, total recoverablemonthly average 45.2 ug/L (Jan, Feb, Mar, Apr, May, Dec), tighterJun 1, 2029under 3 values—
St. Joseph's Utility Operating Company, LLC-St. Joseph's Glenn SubdivisionAR0050181ARIndustrial.06 MGDCopper, total recoverablemonthly average 0.022 lb/d (Jan, Feb, Mar, Apr, May, Dec), tighterJun 1, 2029under 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=AR&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