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Nine Mile Point Nuclear Sta

Electric Services, major discharger, Lycoming, New York. NPDES permit NY0001015 expired Nov 30, 2019; its limits still apply. Last 12 months: over a limit 2 times (last December 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form Q quarterly (5 values), outfall 001 form V quarterly (2 values), outfall 010 form M monthly (12 values), outfall 010 form V quarterly (1 value), outfall 011 form M monthly (9 values), outfall 011 form Q quarterly (3 values), and 32 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 336 reports late

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

Period endingParameterReportedLimitOver by
December 2025Solids, total suspended, daily maximum60 mg/L≤ 45 mg/L33%
December 2025Solids, total suspended, monthly average28.83 mg/L≤ 25 mg/L15%

Limits in force (215)

ParameterStatisticLimitMonthsOutfall
Flow ratedaily maximumreport only (gal/d)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendeddaily maximum≤ 50 mg/Lall year001
Oil & Greasedaily maximum≤ 15 mg/Lall year001
Copper, total [as Cu]daily maximum≤ .05 mg/L (alert, not enforceable)all year001
Zinc, total [as Zn]daily maximum≤ .15 mg/L (alert, not enforceable)all year001
Temperature, water deg. fahrenheitdaily maximum≤ 115 deg Fall year010
pHminimum≥ 6 SUall year010
pHmaximum≤ 9 SUall year010
Solids, total suspendeddaily averagereport only (mg/L)all year010
Solids, total suspendeddaily maximumreport only (mg/L)all year010
Copper, total [as Cu]daily maximum≤ .053 mg/Lall year010
Zinc, total [as Zn]daily maximum≤ .05 mg/L (alert, not enforceable)all year010
Oxidants, total residualdaily maximum≤ .1 mg/Lall year010
Flow, in conduit or thru treatment plantdaily maximum≤ 417.6 MGDall year010
Net rate of additionof heatdaily maximum≤ 4405 MBTU/hrall year010
Net rate of additionof heatdaily maximumreport only (MBTU/hr)all year010
Temp. diff. between intake and dischargedaily maximum≤ 35 deg Fall year010
Temp. diff. between intake and dischargedaily maximumreport only (deg F)all year010
pHminimum≥ 6 SUall year011
pHmaximum≤ 9 SUall year011
pHminimum≥ 4 SUall year011
pHmaximum≤ 9 SUall year011
Solids, total suspendedmonthly average≤ 30 mg/Lall year011
Solids, total suspendedmonthly average≤ 30 mg/Lall year011
Solids, total suspendeddaily maximum≤ 50 mg/Lall year011
Solids, total suspendeddaily maximum≤ 50 mg/Lall year011
Oil & Greasedaily maximum≤ 15 mg/Lall year011
Oil & Greasedaily maximum≤ 15 mg/Lall year011
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year011
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year011
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg Fall year01A
Flow ratedaily maximumreport only (gal/d)all year01A
pHminimum≥ 6 SUall year01A
pHmaximum≤ 9 SUall year01A
Chlorine, total residualdaily maximum≤ .2 mg/Lall year01A
Flow ratemonthly averagereport only (gal/d)all year020
Flow ratedaily maximumreport only (gal/d)all year020
pHminimum≥ 6 SUall year020
pHmaximum≤ 9 SUall year020
Solids, total suspendeddaily maximum≤ 50 mg/Lall year020
Oil & Greasedaily maximum≤ 15 mg/Lall year020
Copper, total [as Cu]daily maximum≤ .03 mg/L (alert, not enforceable)all year020
Zinc, total [as Zn]daily maximum≤ .15 mg/L (alert, not enforceable)all year020
Flow ratedaily averagereport only (gal/d)all year021
Flow ratedaily maximumreport only (gal/d)all year021
pHminimum≥ 6 SUall year021
pHmaximum≤ 9 SUall year021
Solids, total suspendeddaily average≤ 30 mg/Lall year021
Solids, total suspendeddaily maximum≤ 50 mg/Lall year021
Oil & Greasedaily maximum≤ 15 mg/Lall year021
Flow ratedaily maximumreport only (gal/d)all year023
pHminimum≥ 6 SUall year023
pHmaximum≤ 9 SUall year023
Oil & Greasedaily maximum≤ 15 mg/Lall year023
Zinc, total [as Zn]daily maximum≤ .05 mg/L (alert, not enforceable)all year023
Flow ratedaily maximumreport only (gal/d)all year024
pHminimum≥ 6 SUall year024
pHmaximum≤ 9 SUall year024
Solids, total suspendeddaily maximum≤ 50 mg/Lall year024
Oil & Greasedaily maximum≤ 15 mg/Lall year024
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year025
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year025
Flow ratedaily maximumreport only (gal/d)all year025
pHminimum≥ 6 SUall year025
pHmaximum≤ 9 SUall year025
Copper, total [as Cu]daily maximum≤ 1 mg/Lall year025
Zinc, total [as Zn]daily maximum≤ .163 mg/Lall year025
Oxidants, total residualdaily maximum≤ .19 mg/Lall year025
Chlorine, free availabledaily maximum≤ .19 mg/Lall year025
Temp. diff. between intake and dischargedaily maximumreport only (deg F)all year025
Flow ratedaily maximumreport only (gal/d)all year026
pHminimum≥ 6 SUall year026
pHmaximum≤ 9 SUall year026
Flow ratemonthly average≤ 120000 gal/dall year030
Flow ratedaily maximumreport only (gal/d)all year030
Oxygen, dissolved [DO]minimum≥ 4 mg/Lall year030
BOD, 5-day, 20 deg. Cmonthly average≤ 25 mg/Lall year030
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year030
pHminimum≥ 6 SUall year030
pHmaximum≤ 9 SUall year030
Solids, total suspendedmonthly average≤ 25 mg/Lall year030
Solids, total suspendeddaily maximum≤ 45 mg/Lall year030
Solids, settleabledaily maximum≤ .1 mL/Lall year030
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year030
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year030
Chlorine, total residualdaily maximum≤ .1 mg/Lall year030
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year030
Temperature, water deg. fahrenheitdaily maximum≤ 110 deg Fall year040
pHminimum≥ 6 SUall year040
pHmaximum≤ 9 SUall year040
Solids, total suspendedmonthly averagereport only (mg/L)all year040
Solids, total suspendeddaily maximumreport only (mg/L)all year040
Phosphorus, total [as P]daily maximum≤ .5 mg/Lall year040
Copper, total [as Cu]daily maximum≤ .25 mg/Lall year040
Iron, total [as Fe]daily maximum≤ 1 mg/Lall year040
Zinc, total [as Zn]daily maximum≤ .3 mg/Lall year040
Oxidants, total residualdaily maximum≤ .2 mg/Lall year040
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year040
Flow, in conduit or thru treatment plantdaily maximum≤ 72 MGDall year040
Chlorine, free availablemonthly average≤ .2 mg/Lall year040
Chlorine, free availabledaily maximum≤ .27 mg/Lall year040
Net rate of additionof heatdaily maximum≤ 470 MBTU/hrall year040
Temp. diff. between intake and dischargedaily maximum≤ 30 deg Fall year040
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year040
Specific conductancemonthly averagereport only (umho/cm)all year041
Specific conductancedaily maximumreport only (umho/cm)all year041
pHminimum≥ 6 SUall year041
pHmaximum≤ 9 SUall year041
pHminimum≥ 4 SUall year041
pHmaximum≤ 9 SUall year041
Solids, total suspendedmonthly average≤ 30 mg/Lall year041
Solids, total suspendedmonthly average≤ 30 mg/Lall year041
Solids, total suspendeddaily maximum≤ 50 mg/Lall year041
Solids, total suspendeddaily maximum≤ 50 mg/Lall year041
Oil & Greasedaily maximum≤ 15 mg/Lall year041
Oil & Greasedaily maximum≤ 15 mg/Lall year041
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year041
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year041
Flow ratedaily maximumreport only (gal/d)all year07A
pHminimum≥ 6 SUall year07A
pHmaximum≤ 9 SUall year07A
Solids, total suspendedmonthly average≤ 30 mg/Lall year07A
Solids, total suspendeddaily maximum≤ 50 mg/Lall year07A
Oil & Greasedaily maximum≤ 15 mg/Lall year07A
Copper, total [as Cu]daily maximum≤ .1 mg/L (alert, not enforceable)all year07A
Iron, total [as Fe]daily maximum≤ 4 mg/Lall year07A
Nickel, total [as Ni]daily maximum≤ .1 mg/L (alert, not enforceable)all year07A
Zinc, total [as Zn]daily maximum≤ .8 mg/L (alert, not enforceable)all year07A
Aluminum, total [as Al]daily maximum≤ 4 mg/Lall year07A
Flow ratedaily maximumreport only (gal/d)all year07B
pHminimum≥ 6 SUall year07B
pHmaximum≤ 9 SUall year07B
Solids, total suspendedmonthly average≤ 30 mg/Lall year07B
Solids, total suspendeddaily maximum≤ 50 mg/Lall year07B
Oil & Greasedaily maximum≤ 15 mg/Lall year07B
Copper, total [as Cu]daily maximum≤ .1 mg/L (alert, not enforceable)all year07B
Iron, total [as Fe]daily maximum≤ 4 mg/Lall year07B
Nickel, total [as Ni]daily maximum≤ .1 mg/L (alert, not enforceable)all year07B
Zinc, total [as Zn]daily maximum≤ .8 mg/L (alert, not enforceable)all year07B
Aluminum, total [as Al]daily maximum≤ 4 mg/Lall year07B
Flow ratedaily maximumreport only (gal/d)all year07C
pHminimum≥ 6 SUall year07C
pHmaximum≤ 9 SUall year07C
Solids, total suspendedmonthly average≤ 30 mg/Lall year07C
Solids, total suspendeddaily maximum≤ 50 mg/Lall year07C
Oil & Greasedaily maximum≤ 15 mg/Lall year07C
Copper, total [as Cu]daily maximum≤ .1 mg/L (alert, not enforceable)all year07C
Iron, total [as Fe]daily maximum≤ 4 mg/Lall year07C
Nickel, total [as Ni]daily maximum≤ .1 mg/L (alert, not enforceable)all year07C
Zinc, total [as Zn]daily maximum≤ .8 mg/L (alert, not enforceable)all year07C
Aluminum, total [as Al]daily maximum≤ 4 mg/Lall year07C
Flow ratedaily maximumreport only (gal/d)all year07D
pHminimum≥ 6 SUall year07D
pHmaximum≤ 9 SUall year07D
Solids, total suspendedmonthly average≤ 30 mg/Lall year07D
Solids, total suspendeddaily maximum≤ 50 mg/Lall year07D
Oil & Greasedaily maximum≤ 15 mg/Lall year07D
Copper, total [as Cu]daily maximum≤ .1 mg/L (alert, not enforceable)all year07D
Iron, total [as Fe]daily maximum≤ 4 mg/Lall year07D
Nickel, total [as Ni]daily maximum≤ .1 mg/L (alert, not enforceable)all year07D
Zinc, total [as Zn]daily maximum≤ .8 mg/L (alert, not enforceable)all year07D
Aluminum, total [as Al]daily maximum≤ 4 mg/Lall year07D
Flow ratedaily maximumreport only (gal/d)all year07E
pHminimum≥ 6 SUall year07E
pHmaximum≤ 9 SUall year07E
Solids, total suspendedmonthly average≤ 30 mg/Lall year07E
Solids, total suspendeddaily maximum≤ 50 mg/Lall year07E
Oil & Greasedaily maximum≤ 15 mg/Lall year07E
Copper, total [as Cu]daily maximum≤ .1 mg/L (alert, not enforceable)all year07E
Iron, total [as Fe]daily maximum≤ 4 mg/Lall year07E
Nickel, total [as Ni]daily maximum≤ .1 mg/L (alert, not enforceable)all year07E
Zinc, total [as Zn]daily maximum≤ .8 mg/L (alert, not enforceable)all year07E
Aluminum, total [as Al]daily maximum≤ 4 mg/Lall year07E
Flow ratedaily maximumreport only (gal/d)all year07F
pHminimum≥ 6 SUall year07F
pHmaximum≤ 9 SUall year07F
Solids, total suspendedmonthly average≤ 30 mg/Lall year07F
Solids, total suspendeddaily maximum≤ 50 mg/Lall year07F
Oil & Greasedaily maximum≤ 15 mg/Lall year07F
Copper, total [as Cu]daily maximum≤ .1 mg/L (alert, not enforceable)all year07F
Iron, total [as Fe]daily maximum≤ 4 mg/Lall year07F
Nickel, total [as Ni]daily maximum≤ .1 mg/L (alert, not enforceable)all year07F
Zinc, total [as Zn]daily maximum≤ .8 mg/L (alert, not enforceable)all year07F
Aluminum, total [as Al]daily maximum≤ 4 mg/Lall year07F
Flow ratedaily maximumreport only (gal/d)all year07G
pHminimum≥ 6 SUall year07G
pHmaximum≤ 9 SUall year07G
Solids, total suspendedmonthly average≤ 30 mg/Lall year07G
Solids, total suspendeddaily maximum≤ 50 mg/Lall year07G
Oil & Greasedaily maximum≤ 15 mg/Lall year07G
Copper, total [as Cu]daily maximum≤ .1 mg/L (alert, not enforceable)all year07G
Iron, total [as Fe]daily maximum≤ 4 mg/Lall year07G
Nickel, total [as Ni]daily maximum≤ .1 mg/L (alert, not enforceable)all year07G
Zinc, total [as Zn]daily maximum≤ .8 mg/L (alert, not enforceable)all year07G
Aluminum, total [as Al]daily maximum≤ 4 mg/Lall year07G
pHminimum≥ 6 SUall year10A
pHmaximum≤ 9 SUall year10A
Solids, total suspendedmonthly average≤ 50 mg/Lall year10A
Solids, total suspendeddaily maximum≤ 100 mg/Lall year10A
Oil & Greasedaily maximum≤ 15 mg/Lall year10A
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year10A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year10A
pHminimum≥ 6 SUall year40A
pHmaximum≤ 9 SUall year40A
Oil & Greasedaily maximum≤ 15 mg/Lall year40A
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all year40A
pHminimum≥ 6 SUall year40B
pHmaximum≤ 9 SUall year40B
Solids, total suspendedmonthly average≤ 50 mg/Lall year40B
Solids, total suspendeddaily maximum≤ 100 mg/Lall year40B
Oil & Greasedaily maximum≤ 15 mg/Lall year40B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year40B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year40B

How strict are these limits?

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

Same industry: the 39 Electric Services permits in New York.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NY0001015 · MCP: https://passage-data.com/mcp