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Portage County Commissioners

Sewage treatment plant, Atwater, Ohio. NPDES permit OH0038792, in force until Sep 30, 2027. 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 001 form A monthly (30 values), outfall 300 form A monthly (2 values), outfall 601 form A monthly (6 values), outfall 801 form A monthly (8 values), outfall 901 form A monthly (10 values)
Renewal application due
Apr 3, 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 55 reports late

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

Period endingParameterReportedLimitOver by
April 2026Oxygen, dissolved [DO], daily minimum4.6≥ 6 mg/L23%
April 2026Solids, total suspended, weekly maximum15≤ 13.7 kg/d9%
May 2026E. coli, MTEC-MF, weekly geometric mean1986.3≤ 284 MPN/100mL599%

Limits in force (66)

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 minimum≥ 6 mg/Lall year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Residue, tot fltrble [dried at 105 C]monthly averagereport only (mg/L)Jan, Mar, May, Jul, Sep, Nov001
Residue, tot fltrble [dried at 105 C]daily maximumreport only (mg/L)Jan, Mar, May, Jul, Sep, Nov001
Solids, total suspendedmonthly average≤ 12 mg/Lall year001
Solids, total suspendedweekly maximum≤ 18 mg/Lall year001
Solids, total suspendedmonthly average≤ 9.09 kg/dall year001
Solids, total suspendedweekly maximum≤ 13.7 kg/dall year001
Oil and grease [soxhlet extr.] tot.daily maximum≤ 10 mg/LMar, Jun, Sep, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.7 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 9.5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 2.55 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 14.25 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.29 kg/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 7.2 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 1.94 kg/dMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 10.8 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year001
Phosphorus, total [as P]weekly maximum≤ 1.5 mg/Lall year001
Phosphorus, total [as P]monthly average≤ .757 kg/dall year001
Phosphorus, total [as P]weekly maximum≤ 1.14 kg/dall year001
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLMay–Oct001
E. coli, MTEC-MFweekly geometric mean≤ 284 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
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≤ 7.57 kg/dall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 11.4 kg/dall year001
Overflowsmonthly averagereport only (occur/mo)all year300
Overflowsdaily maximumreport only (occur/mo)all year300
Sludge waste from secondary clarifiersmonthly averagereport only (gal)Dec588
Sludge waste from secondary clarifiersdaily maximumreport only (gal)Dec588
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
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
pHdaily minimumreport only (SU)Mar, Jun, Sep, Dec801
pHdaily maximumreport only (SU)Mar, Jun, Sep, Dec801
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec801
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec801
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec801
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec801
Phosphorus, total [as P]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec801
Phosphorus, total [as P]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec801
E. coli, MTEC-MFmonthly geometric meanreport only (MPN/100mL)Jun–Aug801
E. coli, MTEC-MFdaily maximumreport only (MPN/100mL)Jun–Aug801
Temperature, water deg. centigrademonthly averagereport only (deg C)all year901
Temperature, water deg. centigradedaily maximumreport only (deg C)all year901
pHdaily minimumreport only (SU)all year901
pHdaily maximumreport only (SU)all year901
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec901
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec901
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec901
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec901
Phosphorus, total [as P]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec901
Phosphorus, total [as P]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec901
E. coli, MTEC-MFmonthly geometric meanreport only (MPN/100mL)Jun–Aug901
E. coli, MTEC-MFdaily maximumreport only (MPN/100mL)Jun–Aug901

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/OH0038792 · MCP: https://passage-data.com/mcp