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ODOT Dist 4

Sewage treatment plant, Edinburgh, Ohio. NPDES permit OH0092495, in force until Apr 30, 2028. Last 12 months: over a limit 3 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 002 form A monthly (9 values), outfall 604 form A monthly (23 values)
Renewal application due
Nov 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 25 reports late

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

Period endingParameterReportedLimitOver by
February 2026Nitrogen, ammonia total [as N], weekly maximum4.84≤ 4.5 mg/L8%
March 2026Nitrogen, ammonia total [as N], weekly maximum4.8≤ 4.5 mg/L7%
May 2026Nitrogen, ammonia total [as N], monthly average1.05≤ 1 mg/L5%

Limits in force (44)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year002
pHdaily minimum≥ 6.5 SUall year002
pHdaily maximum≤ 9 SUall year002
Solids, total suspendedmonthly averagereport only (mg/L)all year002
Solids, total suspendeddaily maximumreport only (mg/L)all year002
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)May–Oct002
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)May–Oct002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Sludge waste from secondary clarifiersmonthly averagereport only (gal)Dec588
Sludge waste from secondary clarifiersdaily maximumreport only (gal)Dec588
Temperature, water deg. centigrademonthly averagereport only (deg C)all year604
Temperature, water deg. centigradedaily maximumreport only (deg C)all year604
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year604
pHdaily minimum≥ 6.5 SUall year604
pHdaily maximum≤ 9 SUall year604
Solids, total suspendedmonthly average≤ 12 mg/Lall year604
Solids, total suspendedweekly maximum≤ 18 mg/Lall year604
Solids, total suspendedmonthly average≤ .909 kg/dall year604
Solids, total suspendedweekly maximum≤ 1.37 kg/dall year604
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LMay–Oct604
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LJan, Feb, Mar, Apr, Nov, Dec604
Nitrogen, ammonia total [as N]weekly maximum≤ 1.5 mg/LMay–Oct604
Nitrogen, ammonia total [as N]weekly maximum≤ 4.5 mg/LJan, Feb, Mar, Apr, Nov, Dec604
Nitrogen, ammonia total [as N]monthly average≤ .0757 kg/dMay–Oct604
Nitrogen, ammonia total [as N]monthly average≤ .228 kg/dJan, Feb, Mar, Apr, Nov, Dec604
Nitrogen, ammonia total [as N]weekly maximum≤ .114 kg/dMay–Oct604
Nitrogen, ammonia total [as N]weekly maximum≤ .341 kg/dJan, Feb, Mar, Apr, Nov, Dec604
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec604
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec604
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec604
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec604
Phosphorus, total [as P]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec604
Phosphorus, total [as P]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec604
Turbidity [severity]monthly averagereport only (severity)all year604
Turbidity [severity]daily maximumreport only (severity)all year604
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLMay–Oct604
E. coli, MTEC-MFweekly geometric mean≤ 284 MPN/100mLMay–Oct604
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year604
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year604
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year604
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 15 mg/Lall year604
BOD, carbonaceous [5 day, 20 C]monthly average≤ .757 kg/dall year604
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 1.14 kg/dall year604

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OH0092495 · MCP: https://passage-data.com/mcp