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Plants facing new discharge limits — by state and pollutant

In Ohio, for Di[2-ethylhexyl] phthalate [DEHP]: 6 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Nov 1, 2026 and Aug 1, 2029 (24 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 · PA 9 · OH 6 · NJ 2 · TX 2

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
Mahoning County CommissionersOH0024325OHSewage plant, major1.9 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 2100 ug/L, newNov 1, 2026under 3 values—
Mahoning County CommissionersOH0024325OHSewage plant, major1.9 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 1.4 ug/L, newNov 1, 2026under 3 values—
Youngstown, City ofOH0028223OHSewage plant, major35 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 0.19 kg/d, tighterNov 1, 2026under 3 values—
Youngstown, City ofOH0028223OHSewage plant, major35 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 1.4 ug/L, tighterNov 1, 2026under 3 values—
Brookville, City ofOH0020605OHSewage plant, major1.2 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 5.2 kg/d, newJan 1, 2027under 3 values—
Brookville, City ofOH0020605OHSewage plant, major1.2 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 1155 ug/L, newJan 1, 2027under 3 values—
Brookville, City ofOH0020605OHSewage plant, major1.2 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 8.9 ug/L, newJan 1, 2027under 3 values—
Brookville, City ofOH0020605OHSewage plant, major1.2 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 0.04 kg/d, newJan 1, 2027under 3 values—
Boardman WWTPOH0037249OHSewage plant, major5 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 24.8 kg/d, tighterDec 1, 2027under 3 values—
Boardman WWTPOH0037249OHSewage plant, major5 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 1312 ug/L, tighterDec 1, 2027under 3 values—
Boardman WWTPOH0037249OHSewage plant, major5 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 5 ug/L, tighterDec 1, 2027under 3 values—
Boardman WWTPOH0037249OHSewage plant, major5 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 0.095 kg/d, tighterDec 1, 2027under 3 values—
Middle East Fork WWTPOH0049387OHSewage plant, major7.2 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 1100 ug/L (Mar, Jun, Aug, Dec), newMar 1, 2028under 3 values—
Middle East Fork WWTPOH0049387OHSewage plant, major7.2 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 30 kg/d (Mar, Jun, Aug, Dec), newMar 1, 2028under 3 values—
Middle East Fork WWTPOH0049387OHSewage plant, major7.2 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 23 ug/L (Mar, Jun, Aug, Dec), newMar 1, 2028under 3 values—
Middle East Fork WWTPOH0049387OHSewage plant, major7.2 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 0.63 kg/d (Mar, Jun, Aug, Dec), newMar 1, 2028under 3 values—
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 15 kg/d, newAug 1, 2028under 3 values—
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 1104 ug/L, newAug 1, 2028under 3 values—
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 0.11 kg/d, newAug 1, 2028under 3 values—
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 8.4 ug/L, newAug 1, 2028under 3 values—
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 1104 ug/L, newAug 1, 2029under 3 values—
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDDi[2-ethylhexyl] phthalate [DEHP]daily maximum 15 kg/d, newAug 1, 2029under 3 values—
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 8.4 ug/L, newAug 1, 2029under 3 values—
City of Norwalk WWTPOH0052604OHSewage plant, major3.5 MGDDi[2-ethylhexyl] phthalate [DEHP]monthly average 0.11 kg/d, newAug 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=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