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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.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. fahrenheit | daily maximum | ≤ 94 deg F | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 492 MGD | all year | 001 |
| Net rate of additionof heat | daily maximum | ≤ 2.13 GBTU/hr | all year | 001 |
| Temp. difference, summer [deg. F] | daily maximum | ≤ 14 deg F | Jun–Sep | 001 |
| Temp. difference, winter [deg. F] | daily maximum | ≤ 32 deg F | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 001 |
| Flow, gallons/batch | daily maximum | report only (gal/bat) | all year | 004 |
| pH | minimum | ≥ 6 SU | all year | 004 |
| pH | maximum | ≤ 9 SU | all year | 004 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 004 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 004 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 004 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 111 deg F | all year | 005 |
| Temp. diff. between samp. & upstrm deg. F | daily average | report only (deg F) | Jun–Sep | 005 |
| Temp. diff. between samp. & upstrm deg. F | daily average | report only (deg F) | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 005 |
| Temp. diff. between samp. & upstrm deg. F | daily maximum | ≤ 31 deg F | Jun–Sep | 005 |
| Temp. diff. between samp. & upstrm deg. F | daily maximum | ≤ 50 deg F | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 005 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 005 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 413 MGD | all year | 005 |
| Net rate of additionof heat | daily average | report only (GBTU/hr) | all year | 005 |
| Net rate of additionof heat | daily maximum | ≤ 4.45 GBTU/hr | all year | 005 |
| Temperature, water deg. fahrenheit | daily average | report only (deg F) | all year | 006 |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 111 deg F | all year | 006 |
| Temp. diff. between samp. & upstrm deg. F | daily average | report only (deg F) | Jun–Sep | 006 |
| Temp. diff. between samp. & upstrm deg. F | daily average | report only (deg F) | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 006 |
| Temp. diff. between samp. & upstrm deg. F | daily maximum | ≤ 31 deg F | Jun–Sep | 006 |
| Temp. diff. between samp. & upstrm deg. F | daily maximum | ≤ 50 deg F | Jan, Feb, Mar, Apr, May, Oct, Nov, Dec | 006 |
| Flow, in conduit or thru treatment plant | daily average | report only (MGD) | all year | 006 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 492 MGD | all year | 006 |
| Net rate of additionof heat | daily average | report only (GBTU/hr) | all year | 006 |
| Net rate of additionof heat | daily maximum | ≤ 4.67 GBTU/hr | all year | 006 |
| Flow, gallons/batch | daily maximum | report only (gal/bat) | all year | 007 |
| pH | minimum | ≥ 6 SU | all year | 007 |
| pH | maximum | ≤ 9 SU | all year | 007 |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | 007 |
| Oil & Grease | monthly average | report only (mg/L) | all year | 007 |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | 007 |
| pH | minimum | ≥ 6 SU | all year | WWT |
| pH | maximum | ≤ 9 SU | all year | WWT |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | WWT |
| Solids, total suspended | daily maximum | ≤ 50 mg/L | all year | WWT |
| Oil & Grease | daily maximum | ≤ 15 mg/L | all year | WWT |
| Fluoride, total [as F] | daily average | ≤ 15 mg/L | all year | WWT |
| Fluoride, total [as F] | daily maximum | ≤ 30 mg/L | all year | WWT |
| Chromium, total [as Cr] | monthly average | ≤ .5 mg/L | all year | WWT |
| Chromium, total [as Cr] | daily maximum | ≤ 1 mg/L | all year | WWT |
| Copper, total [as Cu] | daily maximum | ≤ 1 mg/L | all year | WWT |
| Iron, total [as Fe] | daily maximum | ≤ 1 mg/L | all year | WWT |
| Manganese, total [as Mn] | monthly average | ≤ 1 mg/L | all year | WWT |
| Manganese, total [as Mn] | daily maximum | ≤ 2 mg/L | all year | WWT |
| Nickel, total [as Ni] | monthly average | ≤ 1 mg/L | all year | WWT |
| Nickel, total [as Ni] | daily maximum | ≤ 2 mg/L | all year | WWT |
| Vanadium, total [as V] | monthly average | ≤ 3 mg/L | all year | WWT |
| Vanadium, total [as V] | daily maximum | ≤ 5 mg/L | all year | WWT |
| Zinc, total [as Zn] | monthly average | ≤ .5 mg/L | all year | WWT |
| Zinc, total [as Zn] | daily maximum | ≤ 1 mg/L | all year | WWT |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | WWT |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | WWT |
| pH range excursions, > 60 minutes | monthly total | ≤ 0 occur/mo | all year | WWT |
| pH range excursions, monthly total accum | monthly total | ≤ 446 min | all year | WWT |
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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