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Village of Columbus Grove WWTP

Sewage treatment plant, Columbus Grove, Ohio. NPDES permit OH0024759, in force until Mar 31, 2029. Last 12 months: over a limit 71 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (53 values), outfall 300 form A monthly (2 values), outfall 601 form A monthly (8 values), outfall 801 form A monthly (5 values), outfall 901 form A monthly (5 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
43 values over a limit, 0 required values missing, 0 of 62 reports late

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

All 71 values over a limit
Period endingParameterReportedLimitOver by
October 2025Cadmium, total recoverable, monthly average3≤ 2.5 ug/L20%
October 2025Copper, total recoverable, daily maximum20≤ 15 ug/L33%
October 2025Copper, total recoverable, monthly average20≤ 9.4 ug/L113%
November 2025BOD, carbonaceous [5 day, 20 C], monthly average11≤ 10 mg/L10%
November 2025BOD, carbonaceous [5 day, 20 C], weekly maximum16≤ 15 mg/L7%
November 2025Cadmium, total recoverable, monthly average3≤ 2.5 ug/L20%
November 2025Copper, total recoverable, daily maximum33≤ 15 ug/L120%
November 2025Copper, total recoverable, monthly average33≤ 9.4 ug/L251%
November 2025Solids, total suspended, monthly average15≤ 12 mg/L25%
November 2025Solids, total suspended, weekly maximum21≤ 18 mg/L17%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average21≤ 10 mg/L110%
December 2025BOD, carbonaceous [5 day, 20 C], weekly maximum42≤ 15 mg/L180%
December 2025Cadmium, total recoverable, monthly average3≤ 2.5 ug/L20%
December 2025Copper, total recoverable, daily maximum34≤ 15 ug/L127%
December 2025Copper, total recoverable, monthly average34≤ 9.4 ug/L262%
December 2025Nitrogen, ammonia total [as N], monthly average6.49≤ 2 mg/L225%
December 2025Nitrogen, ammonia total [as N], weekly maximum14.9≤ 3 mg/L397%
December 2025Oil and grease [soxhlet extr.] tot., daily maximum11≤ 10 mg/L10%
December 2025Solids, total suspended, monthly average21≤ 12 mg/L75%
December 2025Solids, total suspended, weekly maximum40≤ 18 mg/L122%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average39≤ 31.1 kg/d25%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average63≤ 10 mg/L530%
January 2026BOD, carbonaceous [5 day, 20 C], weekly maximum100≤ 15 mg/L567%
January 2026BOD, carbonaceous [5 day, 20 C], weekly maximum61≤ 46.6 kg/d31%
January 2026Copper, total recoverable, daily maximum37≤ 15 ug/L147%
January 2026Copper, total recoverable, monthly average.03≤ .029 kg/d3%
January 2026Copper, total recoverable, monthly average37≤ 9.4 ug/L294%
January 2026Nitrogen, ammonia total [as N], monthly average13.2≤ 2 mg/L560%
January 2026Nitrogen, ammonia total [as N], monthly average8.67≤ 6.2 kg/d40%
January 2026Nitrogen, ammonia total [as N], weekly maximum15.3≤ 9.3 kg/d65%
January 2026Nitrogen, ammonia total [as N], weekly maximum23.5≤ 3 mg/L683%
January 2026Solids, total suspended, monthly average15≤ 12 mg/L25%
January 2026Solids, total suspended, weekly maximum23≤ 18 mg/L28%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average49≤ 10 mg/L390%
February 2026BOD, carbonaceous [5 day, 20 C], weekly maximum110≤ 15 mg/L633%
February 2026BOD, carbonaceous [5 day, 20 C], weekly maximum71≤ 46.6 kg/d52%
February 2026Copper, total recoverable, daily maximum37≤ 15 ug/L147%
February 2026Copper, total recoverable, monthly average37≤ 9.4 ug/L294%
February 2026Nitrogen, ammonia total [as N], monthly average16.2≤ 2 mg/L710%
February 2026Nitrogen, ammonia total [as N], monthly average9.52≤ 6.2 kg/d54%
February 2026Nitrogen, ammonia total [as N], weekly maximum15.7≤ 9.3 kg/d69%
February 2026Nitrogen, ammonia total [as N], weekly maximum25.2≤ 3 mg/L740%
February 2026Oil and grease [soxhlet extr.] tot., daily maximum27≤ 10 mg/L170%
February 2026Oxygen, dissolved [DO], daily minimum4.69≥ 5 mg/L6%
February 2026Solids, total suspended, weekly maximum21≤ 18 mg/L17%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average13≤ 10 mg/L30%
March 2026Copper, total recoverable, daily maximum24≤ 15 ug/L60%
March 2026Copper, total recoverable, monthly average24≤ 9.4 ug/L155%
March 2026E. coli, MTEC-MF, monthly geometric mean2420≤ 126 MPN/100mL1821%
March 2026E. coli, MTEC-MF, weekly geometric mean2420≤ 284 MPN/100mL752%
March 2026Nitrogen, ammonia total [as N], monthly average3.58≤ 2 mg/L79%
March 2026Nitrogen, ammonia total [as N], weekly maximum6.43≤ 3 mg/L114%
April 2026Copper, total recoverable, daily maximum26≤ 15 ug/L73%
April 2026Copper, total recoverable, monthly average26≤ 9.4 ug/L177%
April 2026Oxygen, dissolved [DO], daily minimum.251≥ 5 mg/L95%
May 2026Copper, total recoverable, daily maximum.071≤ .047 kg/d51%
May 2026Copper, total recoverable, daily maximum42≤ 15 ug/L180%
May 2026Copper, total recoverable, monthly average.071≤ .029 kg/d145%
May 2026Copper, total recoverable, monthly average42≤ 9.4 ug/L347%
May 2026Mercury, total low level, monthly average52.8≤ 41.9 ng/L26%
June 2026Copper, total recoverable, daily maximum54≤ 15 ug/L260%
June 2026Copper, total recoverable, monthly average.045≤ .029 kg/d55%
June 2026Copper, total recoverable, monthly average54≤ 9.4 ug/L474%
June 2026Zinc, total recoverable, daily maximum160≤ 124 ug/L29%
June 2026Zinc, total recoverable, monthly average160≤ 122 ug/L31%
August 2026Copper, total recoverable, daily maximum.13≤ .047 kg/d177%
August 2026Copper, total recoverable, daily maximum64≤ 15 ug/L327%
August 2026Copper, total recoverable, monthly average.13≤ .029 kg/d348%
August 2026Copper, total recoverable, monthly average64≤ 9.4 ug/L581%
August 2026Zinc, total recoverable, daily maximum159≤ 124 ug/L28%
August 2026Zinc, total recoverable, monthly average159≤ 122 ug/L30%

Limits in force (93)

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/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≤ 37.3 kg/dall year001
Solids, total suspendedweekly maximum≤ 55.9 kg/dall year001
Oil and grease [soxhlet extr.] tot.daily maximum≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year001
Nitrogen, ammonia total [as N]weekly maximum≤ 3 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 6.2 kg/dall year001
Nitrogen, ammonia total [as N]weekly maximum≤ 9.3 kg/dall year001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year001
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 averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Cyanide, free-water plus wastewatersmonthly average≤ .0052 mg/Lall year001
Cyanide, free-water plus wastewatersdaily maximum≤ .023 mg/Lall year001
Cyanide, free-water plus wastewatersmonthly average≤ .016 kg/dall year001
Cyanide, free-water plus wastewatersdaily maximum≤ .071 kg/dall 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 average≤ 122 ug/Lall year001
Zinc, total recoverabledaily maximum≤ 124 ug/Lall year001
Zinc, total recoverablemonthly average≤ .38 kg/dall year001
Zinc, total recoverabledaily maximum≤ .38 kg/dall year001
Cadmium, total recoverablemonthly average≤ 2.5 ug/Lall year001
Cadmium, total recoverabledaily maximum≤ 4.7 ug/Lall year001
Cadmium, total recoverablemonthly average≤ .0078 kg/dall year001
Cadmium, total recoverabledaily maximum≤ .015 kg/dall year001
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 average≤ 9.4 ug/Lall year001
Copper, total recoverabledaily maximum≤ 15 ug/Lall year001
Copper, total recoverablemonthly average≤ .029 kg/dall year001
Copper, total recoverabledaily maximum≤ .047 kg/dall year001
Chromium, hexavalent dissolved [as Cr]monthly average≤ 11 ug/Lall year001
Chromium, hexavalent dissolved [as Cr]daily maximum≤ 17 ug/Lall year001
Chromium, hexavalent dissolved [as Cr]monthly average≤ .034 kg/dall year001
Chromium, hexavalent dissolved [as Cr]daily maximum≤ .053 kg/dall year001
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLMar, Jun, Aug, Dec001
E. coli, MTEC-MFweekly geometric mean≤ 284 MPN/100mLMar, Jun, Aug, Dec001
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≤ .019 mg/LMay–Oct001
Mercury, total low levelmonthly average≤ 41.9 ng/Lall year001
Mercury, total low leveldaily maximum≤ 1700 ng/Lall year001
Mercury, total low levelmonthly average≤ .00013 kg/dall year001
Mercury, total low leveldaily maximum≤ .00527 kg/dall year001
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≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 15 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 31.1 kg/dall year001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 46.6 kg/dall year001
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
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
Mercury, total low levelmonthly averagereport only (ng/L)all year601
Mercury, total low leveldaily maximumreport only (ng/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
Temperature, water deg. centigrademonthly averagereport only (deg C)all year801
Temperature, water deg. centigradedaily maximumreport only (deg C)all year801
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year801
pHdaily minimumreport only (SU)all year801
pHdaily maximumreport only (SU)all year801
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec801
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Mar, Jun, Aug, 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
Oxygen, dissolved [DO]daily minimumreport only (mg/L)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, Aug, Dec901
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec901
E. coli, MTEC-MFmonthly geometric meanreport only (MPN/100mL)Jun, Aug901
E. coli, MTEC-MFdaily maximumreport only (MPN/100mL)Jun, Aug901

New limits from Apr 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Mercury, total low level, monthly average0.000004 kg/dtighter0.000021 kg/d (11 values)5.25×
Mercury, total low level, monthly average1.3 ng/Ltighter26 ng/L (11 values)20×
Nitrogen, ammonia total [as N], monthly average0.86 mg/Ltighter1.06 mg/L (11 values)1.23×
Nitrogen, ammonia total [as N], weekly maximum1.29 mg/Ltighter1.54 mg/L (11 values)1.19×
Nitrogen, ammonia total [as N], monthly average2.7 kg/dtighter0.78 kg/d (11 values)0.289×
Nitrogen, ammonia total [as N], weekly maximum4 kg/dtighter1.11 kg/d (11 values)0.278×

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/OH0024759 · MCP: https://passage-data.com/mcp