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Zimmer Power Company LLC

Electric Services, major discharger, Moscow, Ohio. NPDES permit OH0048836, in force until Nov 30, 2030. Last 12 months: over a limit 2 times (last March 2026), 172 required values missing, 17 of 151 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 21 days after each period: outfall 003 form A monthly (8 values), outfall 005 form A monthly (22 values), outfall 011 form A monthly (2 values), outfall 012 form A monthly (4 values), outfall 013 form A monthly (4 values), outfall 021 form A monthly (13 values), and 10 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 218 reports late

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

Period endingParameterReportedLimitOver by
January 2026Oil and grease, hexane extr method, daily maximum13≤ 10 mg/L30%
March 2026Oil and grease, hexane extr method, daily maximum14≤ 10 mg/L40%

Limits in force (180)

ParameterStatisticLimitMonthsOutfall
Solids, total suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec003
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, Dec003
Zinc, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec003
Zinc, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec003
Copper, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Sep, Dec003
Copper, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Sep, Dec003
Mercury, total low levelmonthly averagereport only (ng/L)Mar, Jun, Sep, Dec003
Mercury, total low leveldaily maximumreport only (ng/L)Mar, Jun, Sep, Dec003
pHdaily minimum≥ 6.5 SUall year005
pHdaily maximum≤ 9 SUall year005
Solids, total suspendedmonthly average≤ 30 mg/Lall year005
Solids, total suspendeddaily maximum≤ 94.3 mg/Lall year005
Solids, total suspendedmonthly average≤ 730 kg/dall year005
Solids, total suspendeddaily maximum≤ 2295 kg/dall year005
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/Lall year005
Oil and grease, hexane extr methoddaily maximum≤ 240 kg/dall year005
Hardness, total [as CaCO3]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec005
Hardness, total [as CaCO3]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec005
Arsenic, total recoverablemonthly averagereport only (ug/L)all year005
Arsenic, total recoverabledaily maximumreport only (ug/L)all year005
Selenium, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec005
Selenium, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec005
Boron, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec005
Boron, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec005
Zinc, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec005
Zinc, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec005
Copper, total recoverablemonthly averagereport only (ug/L)Mar, Jun, Aug, Dec005
Copper, total recoverabledaily maximumreport only (ug/L)Mar, Jun, Aug, Dec005
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
Mercury, total low levelmonthly average≤ 12 ng/Lall year005
Mercury, total low leveldaily maximum≤ 1700 ng/Lall year005
Mercury, total low levelmonthly average≤ .00029 kg/dall year005
Mercury, total low leveldaily maximum≤ .041 kg/dall year005
Cyanide, free availablemonthly averagereport only (ug/L)all year005
Cyanide, free availabledaily maximumreport only (ug/L)all year005
Toxicity [acute], Ceriodaphnia dubiamonthly averagereport only (tox acute)Jan, Mar, May, Jul, Sep, Nov005
Toxicity [acute], Ceriodaphnia dubiadaily maximumreport only (tox acute)Jan, Mar, May, Jul, Sep, Nov005
Solids, total dissolved- 180 deg. Cmonthly averagereport only (mg/L)Mar, Jun, Aug, Dec005
Solids, total dissolved- 180 deg. Cdaily maximumreport only (mg/L)Mar, Jun, Aug, Dec005
Carbon disulfidemonthly averagereport only (ug/L)all year005
Carbon disulfidedaily maximumreport only (ug/L)all year005
Solids, total suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec011
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, Dec011
Solids, total suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec012
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, Dec012
Zinc, total recoverablemonthly averagereport only (ug/L)all year012
Zinc, total recoverabledaily maximumreport only (ug/L)all year012
Solids, total suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec013
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, Dec013
Mercury, total low levelmonthly averagereport only (ng/L)Mar, Jun, Sep, Dec013
Mercury, total low leveldaily maximumreport only (ng/L)Mar, Jun, Sep, Dec013
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year021
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year021
pHdaily minimum≥ 6.5 SUall year021
pHdaily maximum≤ 9 SUall year021
Hardness, total [as CaCO3]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec021
Hardness, total [as CaCO3]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec021
Copper, total recoverablemonthly averagereport only (ug/L)all year021
Copper, total recoverabledaily maximumreport only (ug/L)all year021
Oxidants, total residualdaily maximum≤ .025 mg/Lall year021
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year021
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year021
Chlorine, total residualdaily maximum≤ .2 mg/Lall year021
Mercury, total low levelmonthly averagereport only (ng/L)all year021
Mercury, total low leveldaily maximumreport only (ng/L)all year021
Chlorination durationdaily maximum≤ 120 minall year021
Solids, total suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec050
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, Dec050
Solids, total suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, Dec057
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, Dec057
Oil and grease, hexane extr methoddaily maximum≤ 10 mg/LMar, Jun, Sep, Dec057
Mercury, total low levelmonthly averagereport only (ng/L)Mar, Jun, Sep, Dec057
Mercury, total low leveldaily maximumreport only (ng/L)Mar, Jun, Sep, Dec057
Oxidants, total residualdaily maximum≤ .0048 mg/Lall year091
Chlorine, total residualdaily maximum≤ .038 mg/Lall year091
Chlorination durationmonthly averagereport only (min)all year091
Chlorination durationdaily maximumreport only (min)all year091
Hardness, total [as CaCO3]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec098
Hardness, total [as CaCO3]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec098
Copper, total recoverablemonthly averagereport only (ug/L)all year098
Copper, total recoverabledaily maximumreport only (ug/L)all year098
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year098
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year098
Mercury, total low levelmonthly averagereport only (ng/L)all year098
Mercury, total low leveldaily maximumreport only (ng/L)all year098
Hardness, total [as CaCO3]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec099
Hardness, total [as CaCO3]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec099
Copper, total recoverablemonthly averagereport only (ug/L)all year099
Copper, total recoverabledaily maximumreport only (ug/L)all year099
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year099
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year099
Mercury, total low levelmonthly average≤ 12 ng/Lall year099
Mercury, total low leveldaily maximum≤ 1700 ng/Lall year099
Mercury, total low levelmonthly average≤ .0012 kg/dall year099
Mercury, total low leveldaily maximum≤ .169 kg/dall year099
Sludge waste from secondary clarifiersmonthly averagereport only (gal)Dec588
Sludge waste from secondary clarifiersdaily maximumreport only (gal)Dec588
pHdaily minimum≥ 6.5 SUall year601
pHdaily maximum≤ 9 SUall year601
Solids, total suspendedmonthly average≤ 12 mg/Lall year601
Solids, total suspendeddaily maximum≤ 18 mg/Lall year601
Solids, total suspendedmonthly average≤ 1 kg/dall year601
Solids, total suspendeddaily maximum≤ 1.5 kg/dall year601
Copper, total recoverablemonthly averagereport only (ug/L)all year601
Copper, total recoverabledaily maximumreport only (ug/L)all year601
Turbidity [severity]monthly averagereport only (severity)all year601
Turbidity [severity]daily maximumreport only (severity)all year601
Coliform, fecal MF, MFC broth, 44.5 Cmonthly geometric mean≤ 1000 #/100mLJan, Feb, Mar, Apr, Nov, Dec601
Coliform, fecal MF, MFC broth, 44.5 Cdaily maximum≤ 2000 #/100mLJan, Feb, Mar, Apr, Nov, Dec601
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLMay–Oct601
E. coli, MTEC-MFdaily maximum≤ 240 MPN/100mLMay–Oct601
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year601
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)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 average≤ 10 mg/Lall year601
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/Lall year601
BOD, carbonaceous [5 day, 20 C]monthly average≤ .83 kg/dall year601
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 1.24 kg/dall year601
pHdaily minimum≥ 6.5 SUall year602
pHdaily maximum≤ 9 SUall year602
Solids, total suspendedmonthly average≤ 12 mg/Lall year602
Solids, total suspendeddaily maximum≤ 18 mg/Lall year602
Solids, total suspendedmonthly average≤ .45 kg/dall year602
Solids, total suspendeddaily maximum≤ .68 kg/dall year602
Copper, total recoverablemonthly averagereport only (ug/L)all year602
Copper, total recoverabledaily maximumreport only (ug/L)all year602
Turbidity [severity]monthly averagereport only (severity)all year602
Turbidity [severity]daily maximumreport only (severity)all year602
Coliform, fecal MF, MFC broth, 44.5 Cmonthly geometric mean≤ 1000 #/100mLJan, Feb, Mar, Apr, Nov, Dec602
Coliform, fecal MF, MFC broth, 44.5 Cdaily maximum≤ 2000 #/100mLJan, Feb, Mar, Apr, Nov, Dec602
E. coli, MTEC-MFmonthly geometric mean≤ 126 MPN/100mLMay–Oct602
E. coli, MTEC-MFdaily maximum≤ 240 MPN/100mLMay–Oct602
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year602
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year602
Mercury, total low levelmonthly averagereport only (ng/L)all year602
Mercury, total low leveldaily maximumreport only (ng/L)all year602
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year602
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/Lall year602
BOD, carbonaceous [5 day, 20 C]monthly average≤ .37 kg/dall year602
BOD, carbonaceous [5 day, 20 C]daily maximum≤ .56 kg/dall year602
pHdaily minimum≥ 6.5 SUall year614
pHdaily maximum≤ 9 SUall year614
Hardness, total [as CaCO3]monthly averagereport only (mg/L)Mar, Jun, Aug, Dec614
Hardness, total [as CaCO3]daily maximumreport only (mg/L)Mar, Jun, Aug, Dec614
Zinc, total recoverablemonthly average≤ 1000 ug/Lall year614
Zinc, total recoverabledaily maximum≤ 1000 ug/Lall year614
Chromium, total recoverablemonthly average≤ 200 ug/Lall year614
Chromium, total recoverabledaily maximum≤ 200 ug/Lall year614
Copper, total recoverablemonthly averagereport only (ug/L)all year614
Copper, total recoverabledaily maximumreport only (ug/L)all year614
Oxidants, total residualdaily maximum≤ .025 mg/Lall year614
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year614
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year614
Chlorine, free availablemonthly average≤ .2 mg/Lall year614
Chlorine, free availabledaily maximum≤ .5 mg/Lall year614
Mercury, total low levelmonthly averagereport only (ng/L)all year614
Mercury, total low leveldaily maximumreport only (ng/L)all year614
Chlorination durationdaily maximum≤ 120 minall year614
pHdaily minimum≥ 6.5 SUall year615
pHdaily maximum≤ 9 SUall year615
Copper, total recoverablemonthly averagereport only (ug/L)all year615
Copper, total recoverabledaily maximumreport only (ug/L)all year615
Oxidants, total residualdaily maximum≤ .025 mg/Lall year615
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year615
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year615
Chlorine, free availablemonthly average≤ .2 mg/Lall year615
Chlorine, free availabledaily maximum≤ .5 mg/Lall year615
Mercury, total low levelmonthly averagereport only (ng/L)all year615
Mercury, total low leveldaily maximumreport only (ng/L)all year615
Chlorination durationdaily maximum≤ 120 minall year615
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year801
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year801
Solids, total suspendedmonthly averagereport only (mg/L)all year801
Solids, total suspendeddaily maximumreport only (mg/L)all year801
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year801
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year801
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiamonthly averagereport only (%)Jan, Mar, May, Jul, Sep, Nov801
%Effect Static Renewal 48Hr Acute Ceriodaphnia dubiadaily maximumreport only (%)Jan, Mar, May, Jul, Sep, Nov801

New limits from Dec 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Zinc, total recoverable, daily maximum outfall 012270 ug/Lnew82 ug/L (8 values)0.304×
Copper, total recoverable, daily maximum outfall 0980.018 kg/dnew——
Copper, total recoverable, daily maximum outfall 09832 ug/Lnew18 ug/L (9 values)0.562×
Mercury, total low level, daily maximum outfall 0980.00095 kg/dnew——
Mercury, total low level, daily maximum outfall 0981700 ng/Lnew2.3 ng/L (9 values)0.00135×
Mercury, total low level, monthly average outfall 0980.0000067 kg/dnew——
Mercury, total low level, monthly average outfall 09812 ng/Lnew2.3 ng/L (9 values)0.192×
Copper, total recoverable, daily maximum outfall 6010.0027 kg/dnew——
Copper, total recoverable, daily maximum outfall 60132 ug/Lnew——
Mercury, total low level, daily maximum outfall 6011700 ng/Lnew——
Mercury, total low level, daily maximum outfall 6010.00014 kg/dnew——
Mercury, total low level, monthly average outfall 6010.000001 kg/dnew——
Mercury, total low level, monthly average outfall 60112 ng/Lnew——

How strict are these limits?

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

Same industry: the 31 Electric Services permits in Ohio.

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