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Chardon Woods

Sewage treatment plant, Chardon, Ohio. NPDES permit OH0083984, in force until Feb 28, 2031. Last 12 months: over a limit 7 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (46 values), outfall 601 form A monthly (6 values), outfall 801 form A monthly (13 values), outfall 901 form A monthly (13 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 0 of 41 reports late

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

Period endingParameterReportedLimitOver by
October 2025Solids, total suspended, weekly maximum11≤ 10.8 mg/L2%
November 2025Solids, total suspended, weekly maximum15≤ 10.8 mg/L39%
January 2026Solids, total suspended, weekly maximum13≤ 10.8 mg/L20%
February 2026Solids, total suspended, monthly average8.5≤ 7.2 mg/L18%
February 2026Solids, total suspended, weekly maximum12≤ 10.8 mg/L11%
June 2026Phosphorus, total [as P], monthly average1.55≤ 1 mg/L55%
June 2026Phosphorus, total [as P], weekly maximum1.55≤ 1.5 mg/L3%

Limits in force (84)

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
Solids, total suspendedmonthly average≤ 7.2 mg/Lall year001
Solids, total suspendedweekly maximum≤ 10.8 mg/Lall year001
Solids, total suspendedmonthly average≤ 2.73 kg/dall year001
Solids, total suspendedweekly maximum≤ 4.09 kg/dall year001
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/LMar, Jun, Sep, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.08 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 4.14 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 1.62 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 6.21 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .409 kg/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.57 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ .614 kg/dMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 2.36 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≤ .379 kg/dall year001
Phosphorus, total [as P]weekly maximum≤ .568 kg/dall year001
Nickel, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec001
Nickel, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec001
Zinc, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec001
Zinc, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec001
Cadmium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec001
Cadmium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec001
Lead, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec001
Lead, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec001
Chromium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec001
Chromium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec001
Copper, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec001
Copper, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec001
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
Mercury, total low levelmonthly average≤ 1.3 ng/LMar, Jun, Sep, Dec001
Mercury, total low leveldaily maximum≤ 1700 ng/LMar, Jun, Sep, Dec001
Mercury, total low levelmonthly average≤ .00000049 kg/dMar, Jun, Sep, Dec001
Mercury, total low leveldaily maximum≤ .000644 kg/dMar, Jun, Sep, Dec001
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)all year001
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)all year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 6 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 9 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 2.28 kg/dall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 3.41 kg/dall year001
Sludge waste from secondary clarifiersmonthly averagereport only (gal)Dec588
Sludge waste from secondary clarifiersdaily maximumreport only (gal)Dec588
Solids, total suspendedmonthly averagereport only (mg/L)all year601
Solids, total suspendeddaily maximumreport only (mg/L)all year601
Mercury, total low levelmonthly averagereport only (ng/L)Mar, Jun, Sep, Dec601
Mercury, total low leveldaily maximumreport only (ng/L)Mar, Jun, Sep, Dec601
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
Temperature, water deg. centigrademonthly averagereport only (deg C)Mar, Jun, Sep, Dec801
Temperature, water deg. centigradedaily maximumreport only (deg C)Mar, Jun, Sep, Dec801
Oxygen, dissolved [DO]daily minimumreport only (mg/L)Mar, Jun, Sep, Dec801
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)May–Oct801
E. coli, MTEC-MFdaily maximumreport only (MPN/100mL)May–Oct801
Temperature, water deg. centigrademonthly averagereport only (deg C)Mar, Jun, Sep, Dec901
Temperature, water deg. centigradedaily maximumreport only (deg C)Mar, Jun, Sep, Dec901
Oxygen, dissolved [DO]daily minimumreport only (mg/L)Mar, Jun, Sep, Dec901
pHdaily minimumreport only (SU)Mar, Jun, Sep, Dec901
pHdaily maximumreport only (SU)Mar, Jun, Sep, Dec901
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)May–Oct901
E. coli, MTEC-MFdaily maximumreport only (MPN/100mL)May–Oct901

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/OH0083984 · MCP: https://passage-data.com/mcp