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Niagara Falls Water Board

Sewage treatment plant, major discharger, Niagara Falls, New York. NPDES permit NY0026336, in force until Aug 31, 2031. Last 12 months: over a limit once (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (55 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
September 2026Toxicity [acute], Ceriodaphnia dubia, maximum5.7 tox acute≤ 2.4 tox acute138%

Limits in force (55)

ParameterStatisticLimitMonths
Color, apparent [unfiltered sample]daily maximumreport only (col unit (pc))all year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. C7-day averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 12000 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 18000 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 12000 lb/dall year
Solids, total suspended7-day average≤ 18000 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Carbon, tot organic [TOC]monthly average≤ 15200 lb/dall year
Carbon, tot organic [TOC]7-day average≤ 22800 lb/dall year
Cyanide, total [as CN]daily maximum≤ 52 ug/Lall year
Sulfide, total [as S]daily maximum≤ 32 ug/Lall year
Sulfide, total [as S]daily maximumreport only (ug/L)all year
Sulfide, total [as S]daily maximum≤ 13 lb/dall year
Phenolics, total (pounds per day)daily maximum≤ 5 ug/Lall year
Phenolics, total (pounds per day)daily maximumreport only (ug/L)all year
Phenolics, total (pounds per day)daily maximum≤ 61 lb/dall year
.delta.-BHCmonthly average≤ .04 ug/Lall year
4,4'-DDTmonthly average≤ .05 ug/Lall year
4,4'-DDDmonthly average≤ .04 ug/Lall year
4,4'-DDEmonthly average≤ .02 ug/Lall year
.alpha.-BHCmonthly average≤ .01 ug/Lall year
.beta.-BHCmonthly average≤ .02 ug/Lall year
.gamma.-BHCmonthly average≤ .02 ug/Lall year
Dieldrinmonthly average≤ .002 ug/Lall year
Dieldrinmonthly averagereport only (ug/L)all year
PCB-1248daily maximum≤ .095 ug/Lall year
Hexachlorobenzenemonthly average≤ .2 ug/Lall year
Hexachlorobenzenemonthly averagereport only (lb/d)all year
Mirexdaily maximum≤ .4 ug/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ 48 MGDall year
Chlorine, total residualdaily maximum≤ .05 mg/Lall year
Chlorine, total residualdaily maximum≤ 3 mg/Lall year
Solids, total dissolveddaily maximum≤ 2000 mg/Lall year
Mercury, total [as Hg]rolling average≤ 16 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year
BOD, 5-day, percent removaldaily minimum≥ 85 %all year
BOD, 5-day, percent removaldaily minimumreport only (%)all year
Solids, suspended percent removaldaily minimum≥ 85 %all year
Solids, suspended percent removaldaily minimumreport only (%)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/NY0026336 · MCP: https://passage-data.com/mcp