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Wellston, City of

Water Supply, Wellston, Ohio. NPDES permit OH0031780, in force until Jul 31, 2028. Last 12 months: over a limit once (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 002 form A monthly (9 values), outfall 601 form A monthly (4 values)
Renewal application due
Feb 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 2 of 24 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
June 2026Solids, total suspended, monthly average14≤ 12 mg/L17%

Limits in force (27)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6.5 SUall year002
pHdaily maximum≤ 10 SUall year002
Solids, total suspendedmonthly average≤ 30 mg/Lall year002
Solids, total suspendeddaily maximum≤ 45 mg/Lall year002
Solids, total suspendedmonthly average≤ 9 kg/dall year002
Solids, total suspendeddaily maximum≤ 13.5 kg/dall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Chlorine, total residualdaily maximum≤ .019 mg/Lall year002
Flow ratemonthly averagereport only (gal/d)all year601
Flow ratedaily maximumreport only (gal/d)all year601
pHdaily minimum≥ 6.5 SUJun, Dec601
pHdaily maximum≤ 9 SUJun, Dec601
Solids, total suspendedmonthly average≤ 12 mg/LJun, Dec601
Solids, total suspendedweekly maximum≤ 18 mg/LJun, Dec601
Solids, total suspendedmonthly average≤ .023 kg/dJun, Dec601
Solids, total suspendedweekly maximum≤ .034 kg/dJun, Dec601
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jun, Dec601
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jun, Dec601
Turbidity [severity]monthly averagereport only (severity)all year601
Turbidity [severity]daily maximumreport only (severity)all year601
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLJun, Aug601
E. coli, MTEC-MFweekly geometric mean≤ 284 MPN/100mLJun, Aug601
BOD, carbonaceous [5 day, 20 C]monthly average≤ 30 mg/LJun, Dec601
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 45 mg/LJun, Dec601
BOD, carbonaceous [5 day, 20 C]monthly average≤ .057 kg/dJun, Dec601
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ .085 kg/dJun, Dec601

How strict are these limits?

Cited limits by parameter: Ohio's rules and the federal ones.

Same industry: the 147 Water Supply permits in Ohio.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OH0031780 · MCP: https://passage-data.com/mcp