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Westfield (V)

Sewage treatment plant, major discharger, Westfield, New York. NPDES permit NY0021334 expired Aug 31, 2021; its limits still apply. Last 12 months: over a limit 3 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (33 values), form V monthly (2 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 0 of 24 reports late

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

Period endingParameterReportedLimitOver by
June 2026Oxygen demand, ultimate, daily maximum82.5 mg/L≤ 68 mg/L21%
June 2026Solids, settleable, daily maximum.2 mL/L≤ .1 mL/L100%
July 2026Coliform, fecal general, 7-day geometric mean435 #/100mL≤ 400 #/100mL9%

Limits in force (39)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximum≤ 70 deg F (alert, not enforceable)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F) (alert, not enforceable)all year
Oxygen demand, ultimatedaily maximum≤ 68 mg/LJun–Oct
Oxygen demand, ultimatedaily maximum≤ 1475 lb/dJun–Oct
Oxygen, dissolved [DO]daily minimum≥ 7.2 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 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≤ 650 lb/dall year
Solids, total suspended7-day average≤ 975 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Copper, total [as Cu]daily maximum≤ 80 ug/Lall year
Copper, total [as Cu]daily maximum≤ 40 ug/Lall year
Copper, total [as Cu]daily maximumreport only (lb/d)all year
Copper, total [as Cu]daily maximum≤ .87 lb/dall year
Nitrogen, ammonia, total [as NH3]monthly average≤ 1.3 mg/LJun–Oct
Nitrogen, ammonia, total [as NH3]monthly average≤ 2.1 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia, total [as NH3]monthly average≤ 46 lb/dJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia, total [as NH3]monthly average≤ 28 lb/dJun–Oct
Nitrogen, ammonia, total [as NH3]monthly averagereport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ 2.6 MGDall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year
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≤ 542 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 867 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d)all year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

How strict are these limits?

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/NY0021334 · MCP: https://passage-data.com/mcp