Passage Data · Check a report · Use it from your AI

Plants facing new discharge limits — by state and pollutant

In Ohio, for Silver total recoverable: 4 plants hold a permit with a new or tighter discharge limit already written into it, taking effect between Jan 1, 2027 and Aug 1, 2028 (14 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 4 · IN 2 · NJ 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
Brookville, City ofOH0020605OHSewage plant, major1.2 MGDSilver total recoverabledaily maximum 9.9 ug/L, newJan 1, 2027under 3 values—
Brookville, City ofOH0020605OHSewage plant, major1.2 MGDSilver total recoverabledaily maximum 0.045 kg/d, newJan 1, 2027under 3 values—
Brookville, City ofOH0020605OHSewage plant, major1.2 MGDSilver total recoverablemonthly average 0.0064 kg/d, newJan 1, 2027under 3 values—
Brookville, City ofOH0020605OHSewage plant, major1.2 MGDSilver total recoverablemonthly average 1.4 ug/L, newJan 1, 2027under 3 values—
TimkenSteel Corp. - Canton WWTPOH0004219OHIndustrial, major—Silver total recoverabledaily maximum 13 ug/L, tighterApr 1, 20270.895 ug/L (8 values)0.0688×
TimkenSteel Corp. - Canton WWTPOH0004219OHIndustrial, major—Silver total recoverabledaily maximum 0.17 kg/d, tighterApr 1, 20270.0078 kg/d (8 values)0.0459×
city of SunburyOH0055093OHSewage plant2 MGDSilver total recoverabledaily maximum 7.4 ug/L, newJan 1, 2028under 3 values—
city of SunburyOH0055093OHSewage plant2 MGDSilver total recoverabledaily maximum 0.056 kg/d, newJan 1, 2028under 3 values—
city of SunburyOH0055093OHSewage plant2 MGDSilver total recoverablemonthly average 0.0098 kg/d, newJan 1, 2028under 3 values—
city of SunburyOH0055093OHSewage plant2 MGDSilver total recoverablemonthly average 1.3 ug/L, newJan 1, 2028under 3 values—
North Olmsted WWTPOH0026778OHSewage plant, major7 MGDSilver total recoverabledaily maximum 12 ug/L, newAug 1, 2028under 3 values—
North Olmsted WWTPOH0026778OHSewage plant, major7 MGDSilver total recoverabledaily maximum 0.32 kg/d, newAug 1, 2028under 3 values—
North Olmsted WWTPOH0026778OHSewage plant, major7 MGDSilver total recoverablemonthly average 0.053 kg/d, newAug 1, 2028under 3 values—
North Olmsted WWTPOH0026778OHSewage plant, major7 MGDSilver total recoverablemonthly average 2 ug/L, newAug 1, 2028under 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