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ODOT District 5

Sewage treatment plant, Norwich, Ohio. NPDES permit OH0076805 expired Jun 30, 2026; its limits still apply. Last 12 months: no values over a limit, 232 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: form A monthly (23 values)
Last report on file
None
Oct 2024 – Sep 2025
0 values over a limit, 284 required values missing, 0 of 13 reports late

Limits in force (33)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Flow ratemonthly averagereport only (gal/d)all year001
Flow ratedaily maximumreport only (gal/d)all year001
Oxygen, dissolved [DO]daily minimum≥ 5 mg/Lall year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 12 mg/Lall year001
Solids, total suspendedweekly maximum≤ 18 mg/Lall year001
Solids, total suspendedmonthly average≤ .45 kg/dall year001
Solids, total suspendedweekly maximum≤ .68 kg/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 2.3 mg/LMar–Nov001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 3 mg/LMar–Nov001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .0871 kg/dMar–Nov001
Nitrogen, ammonia total [as N]weekly maximum≤ .114 kg/dMar–Nov001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec001
Phosphorus, total [as P]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec001
Phosphorus, total [as P]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec001
Turbidity [severity]monthly averagereport only (severity)all year001
Turbidity [severity]daily maximumreport only (severity)all year001
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLMay–Oct001
E. coli, MTEC-MFweekly geometric mean≤ 284 MPN/100mLMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 15 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ .38 kg/dall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ .57 kg/dall year001
Sludge waste from secondary clarifiersmonthly averagereport only (gal)Dec588
Sludge waste from secondary clarifiersdaily maximumreport only (gal)Dec588

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/OH0076805 · MCP: https://passage-data.com/mcp