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Gallipolis, City of

Sewage treatment plant, major discharger, Gallipolis, Ohio. NPDES permit OH0020478, in force until Dec 31, 2027. Last 12 months: over a limit 2 times (last May 2026), 3 of 35 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (30 values), outfall 300 form A monthly (2 values), outfall 601 form A monthly (8 values), outfall 801 form A monthly (4 values)
Renewal application due
Jul 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 0 of 39 reports late

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

Period endingParameterReportedLimitOver by
May 2026E. coli, MTEC-MF, monthly geometric mean410≤ 126 MPN/100mL225%
May 2026E. coli, MTEC-MF, weekly geometric mean1200≤ 240 MPN/100mL400%

Limits in force (98)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 26.4 mg/Lall year001
Solids, total suspendedweekly maximum≤ 39.6 mg/Lall year001
Solids, total suspendedmonthly average≤ 200 kg/dall year001
Solids, total suspendedweekly maximum≤ 300 kg/dall year001
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 10.6 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 11 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 15.9 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 16.5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 80.3 kg/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 83.3 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 121 kg/dMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 125 kg/dJan, Feb, Mar, Apr, Nov, Dec001
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
Phosphate, ortho, dissolved [as P]monthly averagereport only (mg/L)all year001
Phosphate, ortho, dissolved [as P]daily maximumreport only (mg/L)all year001
Nickel, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Nickel, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Zinc, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Zinc, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Cadmium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Cadmium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Lead, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Lead, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Chromium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Chromium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Copper, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Copper, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Chromium, hexavalent dissolved [as Cr]monthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Chromium, hexavalent dissolved [as Cr]daily maximumreport only (ug/L)Mar, Jun, Aug, Dec001
Coliform, fecal MF, MFC broth, 44.5 Cmonthly geometric mean≤ 1000 #/100mLJan, Feb, Mar, Apr, Nov, Dec001
Coliform, fecal MF, MFC broth, 44.5 Cweekly geometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Nov, Dec001
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLMay–Oct001
E. coli, MTEC-MFweekly geometric mean≤ 240 MPN/100mLMay–Oct001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Mercury, total low levelmonthly averagereport only (ng/L)all year001
Mercury, total low leveldaily maximumreport only (ng/L)all year001
Toxicity [acute], Ceriodaphnia dubiamonthly averagereport only (tox acute)Sep001
Toxicity [acute], Ceriodaphnia dubiadaily maximumreport only (tox acute)Sep001
Toxicity [acute], Pimephales promelas [Fathead Minnow]monthly averagereport only (tox acute)Sep001
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximumreport only (tox acute)Sep001
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)Mar, Jun, Aug, Dec001
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)Mar, Jun, Aug, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 22 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 33 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 167 kg/dall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 250 kg/dall year001
Overflowsmonthly averagereport only (occur/mo)all year300
Overflowsdaily maximumreport only (occur/mo)all year300
Nitrogen, ammonia in bottom depositsmonthly averagereport only (mg/kg)Dec581
Nitrogen, ammonia in bottom depositsdaily maximumreport only (mg/kg)Dec581
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/kg)Dec581
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/kg)Dec581
Nitrite plus nitrate in bottom depositsmonthly averagereport only (mg/kg)Dec581
Nitrite plus nitrate in bottom depositsdaily maximumreport only (mg/kg)Dec581
Phosphorous, total, in bottom depositsmonthly averagereport only (mg/kg)Dec581
Phosphorous, total, in bottom depositsdaily maximumreport only (mg/kg)Dec581
Potassium, in bottom depositsmonthly averagereport only (mg/kg)Dec581
Potassium, in bottom depositsdaily maximumreport only (mg/kg)Dec581
Arsenic, dry weightdaily maximum≤ 75 mg/kgDec581
Cadmium, in bottom deposits [dry wgt]daily maximum≤ 85 mg/kgDec581
Copper in bottom deposits [dry wgt]daily maximum≤ 4300 mg/kgDec581
Lead, total dry weight [as Pb]daily maximum≤ 840 mg/kgDec581
Nickel, tot in bottom deposits [dry wgt]daily maximum≤ 420 mg/kgDec581
Zinc in bottom deposits [dry wgt]daily maximum≤ 7500 mg/kgDec581
Selenium, dry weightdaily maximum≤ 100 mg/kgDec581
Biosolids weight indluding admixturesmonthly averagereport only (dry ton)Dec581
Biosolids weight indluding admixturesdaily maximumreport only (dry ton)Dec581
Fecal coliform in sludge, CFU/gramdaily maximum≤ 2000000 CFU/gDec581
Sludge weight, drymonthly averagereport only (dry ton)Dec581
Sludge weight, drydaily maximumreport only (dry ton)Dec581
Mercury, tot in bot deposits [dry wgt]daily maximum≤ 57 mg/kgDec581
Molybdenum, sludge, total, dry weight [as Mo]daily maximum≤ 75 mg/kgDec581
Biosolids weight indluding admixturesmonthly averagereport only (dry ton)Dec586
Biosolids weight indluding admixturesdaily maximumreport only (dry ton)Dec586
pHdaily minimumreport only (SU)all year601
pHdaily maximumreport only (SU)all year601
Solids, total suspendedmonthly averagereport only (mg/L)all year601
Solids, total suspendeddaily maximumreport only (mg/L)all year601
Rainfallmonthly averagereport only (in)all year601
Rainfalldaily maximumreport only (in)all year601
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year601
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year601
%Effect Static Renewal 96Hr Acute Daphnia pulexmonthly averagereport only (%)Sep801
%Effect Static Renewal 96Hr Acute Daphnia pulexdaily maximumreport only (%)Sep801
%Effect Static Renewal 96Hr Acute Pimephales promelasmonthly averagereport only (%)Sep801
%Effect Static Renewal 96Hr Acute Pimephales promelasdaily maximumreport only (%)Sep801

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/OH0020478 · MCP: https://passage-data.com/mcp