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Oswego Harbor Power LLC

Electric Services, major discharger, Oswego, New York. NPDES permit NY0002186 expired May 31, 2020; its limits still apply. Last 12 months: no values over a limit, 62 of 74 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (4 values), outfall 004 form M monthly (2 values), outfall 004 form Q quarterly (3 values), outfall 005 form M monthly (7 values), outfall 006 form M monthly (8 values), outfall 007 form M monthly (2 values), and 4 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 58 of 82 reports late

Limits in force (59)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitdaily maximum≤ 94 deg Fall year001
Flow, in conduit or thru treatment plantdaily maximum≤ 492 MGDall year001
Net rate of additionof heatdaily maximum≤ 2.13 GBTU/hrall year001
Temp. difference, summer [deg. F]daily maximum≤ 14 deg FJun–Sep001
Temp. difference, winter [deg. F]daily maximum≤ 32 deg FJan, Feb, Mar, Apr, May, Oct, Nov, Dec001
Flow, gallons/batchdaily maximumreport only (gal/bat)all year004
pHminimum≥ 6 SUall year004
pHmaximum≤ 9 SUall year004
Solids, total suspendeddaily maximum≤ 50 mg/Lall year004
Oil & Greasemonthly averagereport only (mg/L)all year004
Oil & Greasedaily maximumreport only (mg/L)all year004
Temperature, water deg. fahrenheitdaily maximum≤ 111 deg Fall year005
Temp. diff. between samp. & upstrm deg. Fdaily averagereport only (deg F)Jun–Sep005
Temp. diff. between samp. & upstrm deg. Fdaily averagereport only (deg F)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec005
Temp. diff. between samp. & upstrm deg. Fdaily maximum≤ 31 deg FJun–Sep005
Temp. diff. between samp. & upstrm deg. Fdaily maximum≤ 50 deg FJan, Feb, Mar, Apr, May, Oct, Nov, Dec005
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantdaily maximum≤ 413 MGDall year005
Net rate of additionof heatdaily averagereport only (GBTU/hr)all year005
Net rate of additionof heatdaily maximum≤ 4.45 GBTU/hrall year005
Temperature, water deg. fahrenheitdaily averagereport only (deg F)all year006
Temperature, water deg. fahrenheitdaily maximum≤ 111 deg Fall year006
Temp. diff. between samp. & upstrm deg. Fdaily averagereport only (deg F)Jun–Sep006
Temp. diff. between samp. & upstrm deg. Fdaily averagereport only (deg F)Jan, Feb, Mar, Apr, May, Oct, Nov, Dec006
Temp. diff. between samp. & upstrm deg. Fdaily maximum≤ 31 deg FJun–Sep006
Temp. diff. between samp. & upstrm deg. Fdaily maximum≤ 50 deg FJan, Feb, Mar, Apr, May, Oct, Nov, Dec006
Flow, in conduit or thru treatment plantdaily averagereport only (MGD)all year006
Flow, in conduit or thru treatment plantdaily maximum≤ 492 MGDall year006
Net rate of additionof heatdaily averagereport only (GBTU/hr)all year006
Net rate of additionof heatdaily maximum≤ 4.67 GBTU/hrall year006
Flow, gallons/batchdaily maximumreport only (gal/bat)all year007
pHminimum≥ 6 SUall year007
pHmaximum≤ 9 SUall year007
Solids, total suspendeddaily maximum≤ 50 mg/Lall year007
Oil & Greasemonthly averagereport only (mg/L)all year007
Oil & Greasedaily maximum≤ 15 mg/Lall year007
pHminimum≥ 6 SUall yearWWT
pHmaximum≤ 9 SUall yearWWT
Solids, total suspendedmonthly average≤ 30 mg/Lall yearWWT
Solids, total suspendeddaily maximum≤ 50 mg/Lall yearWWT
Oil & Greasedaily maximum≤ 15 mg/Lall yearWWT
Fluoride, total [as F]daily average≤ 15 mg/Lall yearWWT
Fluoride, total [as F]daily maximum≤ 30 mg/Lall yearWWT
Chromium, total [as Cr]monthly average≤ .5 mg/Lall yearWWT
Chromium, total [as Cr]daily maximum≤ 1 mg/Lall yearWWT
Copper, total [as Cu]daily maximum≤ 1 mg/Lall yearWWT
Iron, total [as Fe]daily maximum≤ 1 mg/Lall yearWWT
Manganese, total [as Mn]monthly average≤ 1 mg/Lall yearWWT
Manganese, total [as Mn]daily maximum≤ 2 mg/Lall yearWWT
Nickel, total [as Ni]monthly average≤ 1 mg/Lall yearWWT
Nickel, total [as Ni]daily maximum≤ 2 mg/Lall yearWWT
Vanadium, total [as V]monthly average≤ 3 mg/Lall yearWWT
Vanadium, total [as V]daily maximum≤ 5 mg/Lall yearWWT
Zinc, total [as Zn]monthly average≤ .5 mg/Lall yearWWT
Zinc, total [as Zn]daily maximum≤ 1 mg/Lall yearWWT
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearWWT
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearWWT
pH range excursions, > 60 minutesmonthly total≤ 0 occur/moall yearWWT
pH range excursions, monthly total accummonthly total≤ 446 minall yearWWT

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/NY0002186 · MCP: https://passage-data.com/mcp