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Village of Delta Wastewater Treatment Plant

Sewage treatment plant, Delta, Ohio. NPDES permit OH0020974, in force until Aug 31, 2029. Last 12 months: over a limit 37 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (42 values), outfall 300 form A monthly (2 values), outfall 601 form A monthly (8 values), outfall 801 form A monthly (2 values), outfall 901 form A monthly (5 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
16 values over a limit, 0 required values missing, 0 of 111 reports late

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

All 37 values over a limit
Period endingParameterReportedLimitOver by
October 2025Solids, total suspended, monthly average24≤ 20 mg/L20%
October 2025Solids, total suspended, weekly maximum33≤ 30 mg/L10%
November 2025Solids, total suspended, monthly average31≤ 30 mg/L3%
December 2025Mercury, total low level, monthly average5.82≤ 5.43 ng/L7%
December 2025Solids, total suspended, monthly average36≤ 30 mg/L20%
January 2026Nitrogen, ammonia total [as N], monthly average3.11≤ 2.8 mg/L11%
January 2026Nitrogen, ammonia total [as N], weekly maximum5.75≤ 4.2 mg/L37%
January 2026Solids, total suspended, monthly average37≤ 30 mg/L23%
February 2026Nitrogen, ammonia total [as N], monthly average5.06≤ 2.8 mg/L81%
February 2026Nitrogen, ammonia total [as N], weekly maximum13.2≤ 11.6 kg/d14%
February 2026Nitrogen, ammonia total [as N], weekly maximum7.69≤ 4.2 mg/L83%
March 2026Nitrogen, ammonia total [as N], weekly maximum16≤ 11.6 kg/d38%
March 2026Nitrogen, ammonia total [as N], weekly maximum5.09≤ 4.2 mg/L21%
March 2026Solids, total suspended, monthly average110≤ 82 kg/d34%
March 2026Solids, total suspended, monthly average40≤ 30 mg/L33%
March 2026Solids, total suspended, weekly maximum230≤ 124 kg/d85%
March 2026Solids, total suspended, weekly maximum72≤ 45 mg/L60%
April 2026Solids, total suspended, monthly average100≤ 82 kg/d22%
April 2026Solids, total suspended, weekly maximum170≤ 124 kg/d37%
May 2026Nitrogen, ammonia total [as N], monthly average3.54≤ .61 mg/L480%
May 2026Nitrogen, ammonia total [as N], monthly average6.14≤ 1.68 kg/d265%
May 2026Nitrogen, ammonia total [as N], weekly maximum4.66≤ .92 mg/L407%
May 2026Nitrogen, ammonia total [as N], weekly maximum9.41≤ 2.53 kg/d272%
May 2026Oxygen, dissolved [DO], daily minimum4.8≥ 5.4 mg/L11%
May 2026Solids, total suspended, monthly average42≤ 20 mg/L110%
May 2026Solids, total suspended, monthly average75≤ 55 kg/d36%
May 2026Solids, total suspended, weekly maximum150≤ 82 kg/d83%
May 2026Solids, total suspended, weekly maximum73≤ 30 mg/L143%
June 2026E. coli, MTEC-MF, monthly geometric mean141.7≤ 126 MPN/100mL12%
June 2026Solids, total suspended, monthly average24≤ 20 mg/L20%
June 2026Solids, total suspended, weekly maximum37≤ 30 mg/L23%
June 2026Solids, total suspended, weekly maximum97≤ 82 kg/d18%
July 2026E. coli, MTEC-MF, weekly geometric mean615.36≤ 284 MPN/100mL117%
August 2026Solids, total suspended, monthly average150≤ 55 kg/d173%
August 2026Solids, total suspended, monthly average38≤ 20 mg/L90%
August 2026Solids, total suspended, weekly maximum200≤ 82 kg/d144%
August 2026Solids, total suspended, weekly maximum47≤ 30 mg/L57%

Limits in force (135)

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≥ 5.4 mg/Lall year001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 20 mg/LMay–Oct001
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedweekly maximum≤ 30 mg/LMay–Oct001
Solids, total suspendedweekly maximum≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedmonthly average≤ 55 kg/dMay–Oct001
Solids, total suspendedmonthly average≤ 82 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedweekly maximum≤ 82 kg/dMay–Oct001
Solids, total suspendedweekly maximum≤ 124 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Oil and grease [soxhlet extr.] tot.daily maximum≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ .61 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 2.8 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ .92 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 4.2 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.68 kg/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 7.69 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 2.53 kg/dMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 11.6 kg/dJan, Feb, Mar, Apr, Nov, Dec001
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
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≤ 148 ug/Lall year001
Zinc, total recoverabledaily maximum≤ 212 ug/Lall year001
Zinc, total recoverablemonthly average≤ .41 kg/dall year001
Zinc, total recoverabledaily maximum≤ .58 kg/dall year001
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 average≤ 23 ug/Lall year001
Copper, total recoverabledaily maximum≤ 40 ug/Lall year001
Copper, total recoverablemonthly average≤ .063 kg/dall year001
Copper, total recoverabledaily maximum≤ .11 kg/dall year001
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
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≤ 5.43 ng/Lall year001
Mercury, total low leveldaily maximum≤ 1700 ng/Lall year001
Mercury, total low levelmonthly average≤ .000015 kg/dall year001
Mercury, total low leveldaily maximum≤ .0047 kg/dall year001
Cyanide, free availablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec001
Cyanide, free availabledaily maximumreport only (ug/L)Mar, Jun, Aug, 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≤ 13 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 24 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 20 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 36 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 36 kg/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 66 kg/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 55 kg/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 99 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Overflowsmonthly averagereport only (occur/mo)all year004
Overflowsdaily maximumreport only (occur/mo)all year004
Overflow volume [SS0 volume, CSO volume]monthly averagereport only (Mgal)all year004
Overflow volume [SS0 volume, CSO volume]daily maximumreport only (Mgal)all year004
Overflowsmonthly averagereport only (occur/mo)all year006
Overflowsdaily maximumreport only (occur/mo)all year006
Overflow volume [SS0 volume, CSO volume]monthly averagereport only (Mgal)all year006
Overflow volume [SS0 volume, CSO volume]daily maximumreport only (Mgal)all year006
Overflowsmonthly averagereport only (occur/mo)all year010
Overflowsdaily maximumreport only (occur/mo)all year010
Overflow volume [SS0 volume, CSO volume]monthly averagereport only (Mgal)all year010
Overflow volume [SS0 volume, CSO volume]daily maximumreport only (Mgal)all year010
Overflowsmonthly averagereport only (occur/mo)all year014
Overflowsdaily maximumreport only (occur/mo)all year014
Overflow volume [SS0 volume, CSO volume]monthly averagereport only (Mgal)all year014
Overflow volume [SS0 volume, CSO volume]daily maximumreport only (Mgal)all year014
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
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
Fecal coliformdaily maximum≤ 2000000 MPN/gDec581
Biosolids weight indluding admixturesmonthly averagereport only (dry ton)Dec581
Biosolids weight indluding admixturesdaily maximumreport only (dry ton)Dec581
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
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
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
Phosphorus, total [as P]monthly averagereport only (mg/L)all year801
Phosphorus, total [as P]daily maximumreport only (mg/L)all year801
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
Hardness, total [as CaCO3]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec901
Hardness, total [as CaCO3]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 Sep 1, 2027

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Copper, total recoverable, daily maximum25 ug/Ltighter9.5 ug/L (4 values)0.38×
Copper, total recoverable, daily maximum0.069 kg/dtighter0.014 kg/d (4 values)0.203×
Copper, total recoverable, monthly average11 ug/Ltighter9.5 ug/L (4 values)0.864×
Copper, total recoverable, monthly average0.03 kg/dtighter0.014 kg/d (4 values)0.467×

How strict are these limits?

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

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Your permit document is the final word. As JSON: /api/v1/permits/OH0020974 · MCP: https://passage-data.com/mcp