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Medina County SD 500 Liverpool WWTP

Sewage treatment plant, major discharger, Valley City, Ohio. NPDES permit OH0043567, in force until Nov 30, 2030. Last 12 months: no values over a limit, 8 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 20 days after each period: outfall 001 form A monthly (61 values), outfall 300 form A monthly (2 values), outfall 581 form A monthly (24 values), outfall 584 form A monthly (33 values), outfall 601 form A monthly (26 values), outfall 801 form A monthly (21 values), and 1 more form
Last report on file
August 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 0 of 82 reports late

Limits in force (216)

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≥ 7 mg/Lall year001
Solids, total suspendedmonthly average≤ 12 mg/LMay–Oct001
Solids, total suspendedmonthly average≤ 16 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedweekly maximum≤ 18 mg/LMay–Oct001
Solids, total suspendedweekly maximum≤ 24 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedmonthly average≤ 681 kg/dMay–Oct001
Solids, total suspendedmonthly average≤ 908 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Solids, total suspendedweekly maximum≤ 1022 kg/dMay–Oct001
Solids, total suspendedweekly maximum≤ 1363 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 1.15 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 4.1 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 1.72 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 6.15 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 65 kg/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 233 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly maximum≤ 98 kg/dMay–Oct001
Nitrogen, ammonia total [as N]weekly maximum≤ 349 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 average≤ 1 mg/Lall year001
Phosphorus, total [as P]weekly maximum≤ 1.5 mg/Lall year001
Phosphorus, total [as P]monthly average≤ 57 kg/dall year001
Phosphorus, total [as P]weekly maximum≤ 85 kg/dall year001
Phosphate, ortho, dissolved [as P]monthly averagereport only (mg/L)all year001
Phosphate, ortho, dissolved [as P]daily maximumreport only (mg/L)all year001
Selenium, total recoverablemonthly averagereport only (ug/L)all year001
Selenium, total recoverabledaily maximumreport only (ug/L)all year001
Nickel, total recoverablemonthly averagereport only (ug/L)all year001
Nickel, total recoverabledaily maximumreport only (ug/L)all year001
Zinc, total recoverablemonthly averagereport only (ug/L)all year001
Zinc, total recoverabledaily maximumreport only (ug/L)all year001
Cadmium, total recoverablemonthly averagereport only (ug/L)all year001
Cadmium, total recoverabledaily maximumreport only (ug/L)all year001
Lead, total recoverablemonthly averagereport only (ug/L)all year001
Lead, total recoverabledaily maximumreport only (ug/L)all year001
Chromium, total recoverablemonthly averagereport only (ug/L)all year001
Chromium, total recoverabledaily maximumreport only (ug/L)all year001
Copper, total recoverablemonthly averagereport only (ug/L)all year001
Copper, total recoverabledaily maximumreport only (ug/L)all year001
Chromium, hexavalent dissolved [as Cr]monthly averagereport only (ug/L)all year001
Chromium, hexavalent dissolved [as Cr]daily maximumreport only (ug/L)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≤ .019 mg/LMay–Oct001
Mercury, total low levelmonthly average≤ 2.1 ng/Lall year001
Mercury, total low leveldaily maximum≤ 700 ng/Lall year001
Mercury, total low levelmonthly average≤ .00012 kg/dall year001
Mercury, total low leveldaily maximum≤ .04 kg/dall year001
Cyanide, free availablemonthly averagereport only (ug/L)all year001
Cyanide, free availabledaily maximumreport only (ug/L)all year001
Toxicity [acute], Ceriodaphnia dubiadaily maximum≤ 1 tox acuteMar, Sep001
Toxicity [chronic], Ceriodaphnia dubiamonthly average≤ 1 tox chronicMar, Sep001
Toxicity [acute], Pimephales promelas [Fathead Minnow]daily maximum≤ 1 tox acuteMar, Sep001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]monthly average≤ 1 tox chronicMar, Sep001
pH, maximumdaily maximum≤ 9 SUall year001
pH, minimumdaily minimum≥ 6.5 SUall 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≤ 8 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 13 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 12 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 454 kg/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 738 kg/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 681 kg/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly maximum≤ 1136 kg/dJan, Feb, Mar, Apr, Nov, Dec001
Overflowsmonthly averagereport only (occur/mo)all year300
Overflowsdaily maximumreport only (occur/mo)all year300
Nitrogen, ammonia in bottom depositsmonthly averagereport only (mg/kg)Mar, Jun, Sep, Dec581
Nitrogen, ammonia in bottom depositsdaily maximumreport only (mg/kg)Mar, Jun, Sep, Dec581
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/kg)Mar, Jun, Sep, Dec581
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/kg)Mar, Jun, Sep, Dec581
Phosphorous, total, in bottom depositsmonthly averagereport only (mg/kg)Mar, Jun, Sep, Dec581
Phosphorous, total, in bottom depositsdaily maximumreport only (mg/kg)Mar, Jun, Sep, Dec581
Potassium, in bottom depositsmonthly averagereport only (mg/kg)Mar, Jun, Sep, Dec581
Potassium, in bottom depositsdaily maximumreport only (mg/kg)Mar, Jun, Sep, Dec581
Arsenic, dry weightdaily maximum≤ 75 mg/kgMar, Jun, Sep, Dec581
Cadmium, in bottom deposits [dry wgt]daily maximum≤ 85 mg/kgMar, Jun, Sep, Dec581
Copper in bottom deposits [dry wgt]daily maximum≤ 4300 mg/kgMar, Jun, Sep, Dec581
Lead, total dry weight [as Pb]daily maximum≤ 840 mg/kgMar, Jun, Sep, Dec581
Nickel, tot in bottom deposits [dry wgt]daily maximum≤ 420 mg/kgMar, Jun, Sep, Dec581
Zinc in bottom deposits [dry wgt]daily maximum≤ 7500 mg/kgMar, Jun, Sep, Dec581
Selenium, dry weightdaily maximum≤ 100 mg/kgMar, Jun, Sep, Dec581
Fecal coliformdaily maximum≤ 2000000 MPN/gMar, Jun, Sep, Dec581
Biosolids weight indluding admixturesmonthly averagereport only (dry ton)Mar, Jun, Sep, Dec581
Biosolids weight indluding admixturesdaily maximumreport only (dry ton)Mar, Jun, Sep, Dec581
Sludge weight, drymonthly averagereport only (dry ton)Mar, Jun, Sep, Dec581
Sludge weight, drydaily maximumreport only (dry ton)Mar, Jun, Sep, Dec581
Solids, total, percentmonthly averagereport only (%)Mar, Jun, Sep, Dec581
Solids, total, percentdaily maximumreport only (%)Mar, Jun, Sep, Dec581
Mercury, tot in bot deposits [dry wgt]daily maximum≤ 57 mg/kgMar, Jun, Sep, Dec581
Molybdenum, sludge, total, dry weight [as Mo]daily maximum≤ 75 mg/kgMar, Jun, Sep, Dec581
Nitrogen, ammonia in bottom depositsmonthly averagereport only (mg/kg)Mar, Jun, Sep, Dec584
Nitrogen, ammonia in bottom depositsdaily maximumreport only (mg/kg)Mar, Jun, Sep, Dec584
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/kg)Mar, Jun, Sep, Dec584
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/kg)Mar, Jun, Sep, Dec584
Phosphorous, total, in bottom depositsmonthly averagereport only (mg/kg)Mar, Jun, Sep, Dec584
Phosphorous, total, in bottom depositsdaily maximumreport only (mg/kg)Mar, Jun, Sep, Dec584
Potassium, in bottom depositsmonthly averagereport only (mg/kg)Mar, Jun, Sep, Dec584
Potassium, in bottom depositsdaily maximumreport only (mg/kg)Mar, Jun, Sep, Dec584
Arsenic, dry weightmonthly average≤ 41 mg/kgMar, Jun, Sep, Dec584
Arsenic, dry weightdaily maximum≤ 75 mg/kgMar, Jun, Sep, Dec584
Cadmium, in bottom deposits [dry wgt]monthly average≤ 39 mg/kgMar, Jun, Sep, Dec584
Cadmium, in bottom deposits [dry wgt]daily maximum≤ 85 mg/kgMar, Jun, Sep, Dec584
Copper in bottom deposits [dry wgt]monthly average≤ 1500 mg/kgMar, Jun, Sep, Dec584
Copper in bottom deposits [dry wgt]daily maximum≤ 4300 mg/kgMar, Jun, Sep, Dec584
Lead, total dry weight [as Pb]monthly average≤ 300 mg/kgMar, Jun, Sep, Dec584
Lead, total dry weight [as Pb]daily maximum≤ 840 mg/kgMar, Jun, Sep, Dec584
Nickel, tot in bottom deposits [dry wgt]monthly average≤ 420 mg/kgMar, Jun, Sep, Dec584
Nickel, tot in bottom deposits [dry wgt]daily maximum≤ 420 mg/kgMar, Jun, Sep, Dec584
Zinc in bottom deposits [dry wgt]monthly average≤ 2800 mg/kgMar, Jun, Sep, Dec584
Zinc in bottom deposits [dry wgt]daily maximum≤ 7500 mg/kgMar, Jun, Sep, Dec584
Selenium, dry weightmonthly average≤ 100 mg/kgMar, Jun, Sep, Dec584
Selenium, dry weightdaily maximum≤ 100 mg/kgMar, Jun, Sep, Dec584
Fecal coliformdaily maximum≤ 1000 MPN/gMar, Jun, Sep, Dec584
Biosolids weight indluding admixturesmonthly averagereport only (dry ton)Mar, Jun, Sep, Dec584
Biosolids weight indluding admixturesdaily maximumreport only (dry ton)Mar, Jun, Sep, Dec584
Sludge weight, drymonthly averagereport only (dry ton)Mar, Jun, Sep, Dec584
Sludge weight, drydaily maximumreport only (dry ton)Mar, Jun, Sep, Dec584
Solids, total, percentmonthly averagereport only (%)Mar, Jun, Sep, Dec584
Solids, total, percentdaily maximumreport only (%)Mar, Jun, Sep, Dec584
Mercury, tot in bot deposits [dry wgt]monthly average≤ 17 mg/kgMar, Jun, Sep, Dec584
Mercury, tot in bot deposits [dry wgt]daily maximum≤ 57 mg/kgMar, Jun, Sep, Dec584
Molybdenum, sludge, total, dry weight [as Mo]monthly average≤ 75 mg/kgMar, Jun, Sep, Dec584
Molybdenum, sludge, total, dry weight [as Mo]daily maximum≤ 75 mg/kgMar, Jun, Sep, Dec584
Biosolids weight indluding admixturesmonthly averagereport only (dry ton)Dec586
Biosolids weight indluding admixturesdaily maximumreport only (dry ton)Dec586
Sludge weight, drymonthly averagereport only (dry ton)Dec588
Sludge weight, drydaily maximumreport only (dry ton)Dec588
Solids, total suspendedmonthly averagereport only (mg/L)all year601
Solids, total suspendeddaily maximumreport only (mg/L)all year601
Cyanide, total [as CN]monthly averagereport only (mg/L)all year601
Cyanide, total [as CN]daily maximumreport only (mg/L)all year601
Selenium, total recoverablemonthly averagereport only (ug/L)all year601
Selenium, total recoverabledaily maximumreport only (ug/L)all year601
Nickel, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec601
Nickel, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec601
Zinc, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec601
Zinc, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec601
Cadmium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec601
Cadmium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec601
Lead, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec601
Lead, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec601
Chromium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec601
Chromium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec601
Copper, total recoverablemonthly averagereport only (ug/L)all year601
Copper, total recoverabledaily maximumreport only (ug/L)all year601
Chromium, hexavalent dissolved [as Cr]monthly averagereport only (ug/L)Mar, Jun, Sep, Dec601
Chromium, hexavalent dissolved [as Cr]daily maximumreport only (ug/L)Mar, Jun, Sep, Dec601
Mercury, total low levelmonthly averagereport only (ng/L)all year601
Mercury, total low leveldaily maximumreport only (ng/L)all year601
pH, maximumdaily maximumreport only (SU)all year601
pH, minimumdaily minimumreport only (SU)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
Solids, total suspendedmonthly averagereport only (mg/L)all year602
Solids, total suspendeddaily maximumreport only (mg/L)all year602
Bypass Volumemonthly averagereport only (Mgal)all year602
Bypass Volumedaily maximumreport only (Mgal)all year602
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year602
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year602
Bypass valvemonthly averagereport only (occur/mo)all year602
Bypass valvedaily maximumreport only (occur/mo)all year602
Bypass of treatmentmonthly averagereport only (hr/mo)all year602
Bypass of treatmentdaily maximumreport only (hr/mo)all year602
Flow, totalmonthly averagereport only (Mgal)all year603
Flow, totaldaily maximumreport only (Mgal)all year603
Duration of dischargemonthly averagereport only (hr)all year603
Duration of dischargedaily maximumreport only (hr)all year603
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)all year801
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year801
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year801
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year801
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year801
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year801
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
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiamonthly averagereport only (%)Mar, Sep801
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiadaily maximumreport only (%)Mar, Sep801
%Effect Static Renewal 96Hr Acute Pimephales promelasmonthly averagereport only (%)Mar, Sep801
%Effect Static Renewal 96Hr Acute Pimephales promelasdaily maximumreport only (%)Mar, Sep801
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiamonthly averagereport only (%)Mar, Sep801
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubiadaily maximumreport only (%)Mar, Sep801
%Effect Static Renewal 7Day Chronic Pimephales promelasmonthly averagereport only (%)Mar, Sep801
%Effect Static Renewal 7Day Chronic Pimephales promelasdaily maximumreport only (%)Mar, Sep801
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)all year901
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year901
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year901
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year901
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year901
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year901
Phosphorus, total [as P]monthly averagereport only (mg/L)all year901
Phosphorus, total [as P]daily maximumreport only (mg/L)all year901
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year901
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year901
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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Your permit document is the final word. As JSON: /api/v1/permits/OH0043567 · MCP: https://passage-data.com/mcp