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Herkimer (V)

Sewage treatment plant, major discharger, Herkimer, New York. NPDES permit NY0020486 expired Dec 31, 2024; its limits still apply. Last 12 months: over a limit 2 times (last April 2026), 1 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 58 days after each period: form B monthly (26 values), form Q quarterly (1 value)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 16 reports late

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

Period endingParameterReportedLimitOver by
March 2026Flow, in conduit or thru treatment plant, monthly average1.94 MGD≤ 1.7 MGD14%
April 2026Flow, in conduit or thru treatment plant, monthly average2 MGD≤ 1.7 MGD18%

Limits in force (27)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHminimumreport only (SU)all year
pHmaximumreport only (SU)all year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 425 lb/dall year
Solids, total suspended7-day average≤ 638 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspended7-day averagereport only (mg/L)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ 1.7 MGDall year
Chlorine, total residualdaily maximum≤ 2 mg/LMay–Oct
Mercury, dissolved [as Hg]daily maximum≤ 50 ng/Lall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Oct
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 354 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 567 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]7-day averagereport only (mg/L)all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 85 %all year

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NY0020486 · MCP: https://passage-data.com/mcp