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Rock Creek WWTP

Sewage treatment plant, Rock Creek, Ohio. NPDES permit OH0107204, in force until Jun 30, 2028. Last 12 months: over a limit 4 times (last July 2026), 20 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (32 values), outfall 300 form A monthly (2 values)
Renewal application due
Jan 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
16 values over a limit, 12 required values missing, 1 of 26 reports late

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

Period endingParameterReportedLimitOver by
October 2025E. coli, MTEC-MF, monthly geometric meanT≤ 126 MPN/100mL—
October 2025E. coli, MTEC-MF, weekly geometric meanT≤ 284 MPN/100mL—
June 2026BOD, carbonaceous [5 day, 20 C], weekly maximum17.1≤ 15 mg/L14%
July 2026E. coli, MTEC-MF, weekly geometric mean635≤ 284 MPN/100mL124%

Limits in force (49)

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≥ 5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Oxygen, dissolved [DO]daily minimum≥ 7 mg/LMay–Oct001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 12 mg/LMay–Oct001
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedweekly maximum≤ 18 mg/LMay–Oct001
Solids, total suspendedweekly maximum≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedmonthly average≤ 3.2 kg/dMay–Oct001
Solids, total suspendedmonthly average≤ 8 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedweekly maximum≤ 4.8 kg/dMay–Oct001
Solids, total suspendedweekly maximum≤ 12 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 2.3 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .4 kg/dMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ .61 kg/dMay–Oct001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Jan, Mar, May, Jul, Sep, Nov001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Jan, Mar, May, Jul, Sep, Nov001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Jan, Mar, May, Jul, Sep, Nov001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Jan, Mar, May, Jul, Sep, Nov001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
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
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualdaily maximum≤ .038 mg/LMay–Oct001
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)Jan, Mar, May, Jul, Sep, Nov001
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)Jan, Mar, May, Jul, Sep, Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 15 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 40 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 2.7 kg/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 6.6 kg/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 4 kg/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 11 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Overflowsmonthly averagereport only (occur/mo)all year300
Overflowsdaily maximumreport only (occur/mo)all year300
Biosolids weight indluding admixturesmonthly averagereport only (dry ton)Dec586
Biosolids weight indluding admixturesdaily maximumreport only (dry ton)Dec586
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/OH0107204 · MCP: https://passage-data.com/mcp