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Plants facing new discharge limits — by state and pollutant

In Ohio, for Copper, total recoverable: 17 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Nov 1, 2026 and May 1, 2030 (55 limits); 4 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 · Nitrogen, ammonia total [as N] 40 · Solids, total suspended 23 · BOD, carbonaceous [5 day, 20 C] 20 · Mercury, total low level 19 · E. coli, MTEC-MF 18 · Copper, total recoverable 17 · Cyanide, free available 17 · Chlorine, total residual 16 · pH 15 · Phosphorus, total [as P] 12 · Toxicity [acute], Ceriodaphnia dubia 12 · Solids, total dissolved- 180 deg. C 11 · Toxicity [acute], Pimephales promelas [Fathead Minnow] 11 · Toxicity [chronic], Pimephales promelas [Fathead Minnow] 10 · Zinc, total recoverable 10 · Toxicity [chronic], Ceriodaphnia dubia 9 · Selenium, total recoverable 8 · Chromium, hexavalent dissolved [as Cr] 7 · Cadmium, total recoverable 6 · Di[2-ethylhexyl] phthalate [DEHP] 6 · Lead, total recoverable 6 · Silver total recoverable 4 · Carcinogen additivity factor 2 · Nitrogen, inorganic total 2 · Oil and grease, hexane extr method 2

PlantPermitStateTypeDesign flowParameterNew limitEffectiveToday's median× limit
Huntsman Advanced Materials Americas, LLC.OH0029149OHIndustrial, major—Copper, total recoverablemonthly average 15 ug/L (Mar, Jun, Sep, Dec), newMar 1, 202816.9 ug/L (3 values)1.13×
Wieland ChaseOH0002941OHIndustrial—Copper, total recoverabledaily maximum 60 ug/L, newApr 1, 202861 ug/L (11 values)1.02×
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDCopper, total recoverablemonthly average 20 ug/L, newAug 1, 202820.5 ug/L (6 values)1.02×
Madison County Sewer District #2OH0130915OHIndustrial.3 MGDCopper, total recoverablemonthly average 38 ug/L, tighterSep 1, 202846 ug/L (11 values)1.21×
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDCopper, total recoverablemonthly average 20 ug/L, newAug 1, 202920.5 ug/L (6 values)1.02×
North Lewisburg, Village ofOH0023582OHSewage plant.42 MGDCopper, total recoverablemonthly average 32 ug/L, tighterNov 1, 20264.5 ug/L (8 values)0.141×
North Lewisburg, Village ofOH0023582OHSewage plant.42 MGDCopper, total recoverabledaily maximum 52 ug/L, tighterNov 1, 20264.5 ug/L (8 values)0.0865×
North Lewisburg, Village ofOH0023582OHSewage plant.42 MGDCopper, total recoverablemonthly average 0.051 kg/d, tighterNov 1, 20260.00185 kg/d (8 values)0.0363×
North Lewisburg, Village ofOH0023582OHSewage plant.42 MGDCopper, total recoverabledaily maximum 0.083 kg/d, tighterNov 1, 20260.00185 kg/d (8 values)0.0223×
FirstEnergy Generation LLCOH0011525OHIndustrial, major—Copper, total recoverabledaily maximum 15 ug/L, tighterNov 1, 2026under 3 values—
TimkenSteel Corp. - Canton WWTPOH0004219OHIndustrial, major—Copper, total recoverablemonthly average 27 ug/L, tighterApr 1, 202713 ug/L (11 values)0.481×
TimkenSteel Corp. - Canton WWTPOH0004219OHIndustrial, major—Copper, total recoverablemonthly average 0.36 kg/d, tighterApr 1, 20270.12 kg/d (11 values)0.333×
TimkenSteel Corp. - Canton WWTPOH0004219OHIndustrial, major—Copper, total recoverabledaily maximum 44 ug/L, tighterApr 1, 202713 ug/L (11 values)0.295×
TimkenSteel Corp. - Canton WWTPOH0004219OHIndustrial, major—Copper, total recoverabledaily maximum 0.58 kg/d, tighterApr 1, 20270.12 kg/d (11 values)0.207×
Eaton Homes WWTPOH0026140OHSewage plant.2 MGDCopper, total recoverabledaily maximum 0.023 kg/d (Jun, Dec), tighterMay 1, 2027under 3 values—
Eaton Homes WWTPOH0026140OHSewage plant.2 MGDCopper, total recoverabledaily maximum 30 ug/L (Jun, Dec), tighterMay 1, 2027under 3 values—
Eaton Homes WWTPOH0026140OHSewage plant.2 MGDCopper, total recoverablemonthly average 0.014 kg/d (Jun, Dec), tighterMay 1, 2027under 3 values—
Eaton Homes WWTPOH0026140OHSewage plant.2 MGDCopper, total recoverablemonthly average 19 ug/L (Jun, Dec), tighterMay 1, 2027under 3 values—
Village of Delta Wastewater Treatment PlantOH0020974OHSewage plant.725 MGDCopper, total recoverablemonthly average 11 ug/L, tighterSep 1, 20279.5 ug/L (4 values)0.864×
Village of Delta Wastewater Treatment PlantOH0020974OHSewage plant.725 MGDCopper, total recoverablemonthly average 0.03 kg/d, tighterSep 1, 20270.014 kg/d (4 values)0.467×
Village of Delta Wastewater Treatment PlantOH0020974OHSewage plant.725 MGDCopper, total recoverabledaily maximum 25 ug/L, tighterSep 1, 20279.5 ug/L (4 values)0.38×
Village of Delta Wastewater Treatment PlantOH0020974OHSewage plant.725 MGDCopper, total recoverabledaily maximum 0.069 kg/d, tighterSep 1, 20270.014 kg/d (4 values)0.203×
Brentwood Lake WWTPOH0026158OHSewage plant.12 MGDCopper, total recoverablemonthly average 19 ug/L (Jun, Dec), tighterJan 1, 2028under 3 values—
Brentwood Lake WWTPOH0026158OHSewage plant.12 MGDCopper, total recoverablemonthly average 0.0086 kg/d (Jun, Dec), tighterJan 1, 2028under 3 values—
Brentwood Lake WWTPOH0026158OHSewage plant.12 MGDCopper, total recoverableweekly maximum 30 ug/L (Jun, Dec), tighterJan 1, 2028under 3 values—
Brentwood Lake WWTPOH0026158OHSewage plant.12 MGDCopper, total recoverableweekly maximum 0.014 kg/d (Jun, Dec), tighterJan 1, 2028under 3 values—
Huntsman Advanced Materials Americas, LLC.OH0029149OHIndustrial, major—Copper, total recoverabledaily maximum 23 ug/L (Mar, Jun, Sep, Dec), newMar 1, 202816.9 ug/L (3 values)0.735×
Middle East Fork WWTPOH0049387OHSewage plant, major7.2 MGDCopper, total recoverabledaily maximum 25 ug/L, newMar 1, 202810 ug/L (7 values)0.4×
Huntsman Advanced Materials Americas, LLC.OH0029149OHIndustrial, major—Copper, total recoverabledaily maximum 0.028 kg/d (Mar, Jun, Sep, Dec), newMar 1, 2028under 3 values—
Huntsman Advanced Materials Americas, LLC.OH0029149OHIndustrial, major—Copper, total recoverablemonthly average 0.018 kg/d (Mar, Jun, Sep, Dec), newMar 1, 2028under 3 values—
Middle East Fork WWTPOH0049387OHSewage plant, major7.2 MGDCopper, total recoverabledaily maximum 0.68 kg/d, newMar 1, 2028under 3 values—
Rocky Fork Lake WWTPOH0119075OHIndustrial.3 MGDCopper, total recoverablemonthly average 61 ug/L, newJun 1, 20287 ug/L (9 values)0.115×
Rocky Fork Lake WWTPOH0119075OHIndustrial.3 MGDCopper, total recoverabledaily maximum 71 ug/L, newJun 1, 20287 ug/L (9 values)0.0986×
Rocky Fork Lake WWTPOH0119075OHIndustrial.3 MGDCopper, total recoverabledaily maximum 0.081 kg/d, newJun 1, 2028under 3 values—
Rocky Fork Lake WWTPOH0119075OHIndustrial.3 MGDCopper, total recoverablemonthly average 0.069 kg/d, newJun 1, 2028under 3 values—
Titanium Metals Corp Toronto PlantOH0010910OHIndustrial, major—Copper, total recoverabledaily maximum 54 ug/L, newJun 1, 2028under 3 values—
Titanium Metals Corp Toronto PlantOH0010910OHIndustrial, major—Copper, total recoverabledaily maximum 54 ug/L, newJun 1, 2028under 3 values—
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDCopper, total recoverabledaily maximum 32 ug/L, newAug 1, 202820.5 ug/L (6 values)0.641×
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDCopper, total recoverabledaily maximum 0.42 kg/d, newAug 1, 2028under 3 values—
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDCopper, total recoverablemonthly average 0.26 kg/d, newAug 1, 2028under 3 values—
Madison County Sewer District #2OH0130915OHIndustrial.3 MGDCopper, total recoverabledaily maximum 54 ug/L, tighterSep 1, 202847 ug/L (11 values)0.87×
Madison County Sewer District #2OH0130915OHIndustrial.3 MGDCopper, total recoverablemonthly average 0.043 kg/d, tighterSep 1, 20280.02 kg/d (11 values)0.465×
JSW Steel USA Ohio, Inc.OH0011355OHIndustrial, major—Copper, total recoverabledaily maximum 29 ug/L, newSep 1, 202811 ug/L (6 values)0.379×
Madison County Sewer District #2OH0130915OHIndustrial.3 MGDCopper, total recoverabledaily maximum 0.061 kg/d, tighterSep 1, 20280.02 kg/d (11 values)0.328×
Zimmer Power Company LLCOH0048836OHIndustrial, major—Copper, total recoverabledaily maximum 32 ug/L, newDec 1, 202818 ug/L (9 values)0.562×
Zimmer Power Company LLCOH0048836OHIndustrial, major—Copper, total recoverabledaily maximum 0.018 kg/d, newDec 1, 2028under 3 values—
Zimmer Power Company LLCOH0048836OHIndustrial, major—Copper, total recoverabledaily maximum 0.0027 kg/d, newDec 1, 2028under 3 values—
Zimmer Power Company LLCOH0048836OHIndustrial, major—Copper, total recoverabledaily maximum 32 ug/L, newDec 1, 2028under 3 values—
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDCopper, total recoverabledaily maximum 32 ug/L, newAug 1, 202920.5 ug/L (6 values)0.641×
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDCopper, total recoverabledaily maximum 0.42 kg/d, newAug 1, 2029under 3 values—
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDCopper, total recoverablemonthly average 0.26 kg/d, newAug 1, 2029under 3 values—
JSW Steel USA Ohio, Inc.OH0011355OHIndustrial, major—Copper, total recoverabledaily maximum 29 ug/L (Mar, Jun, Sep, Dec), newSep 1, 2029under 3 values—
Cardinal Operating Company - Cardinal PlantOH0012581OHIndustrial, major—Copper, total recoverabledaily maximum 61 ug/L, newJan 1, 203025 ug/L (8 values)0.41×
City of Pataskala WRFOH0020273OHSewage plant1.1 MGDCopper, total recoverablemonthly average 24 ug/L, tighterMay 1, 203014.5 ug/L (6 values)0.604×
City of Pataskala WRFOH0020273OHSewage plant1.1 MGDCopper, total recoverabledaily maximum 38 ug/L, tighterMay 1, 203014.5 ug/L (6 values)0.382×

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