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Chaumont (V)

Sewage treatment plant, Chaumont, New York. NPDES permit NY0257851, in force until Aug 31, 2030. Last 12 months: over a limit 11 times (last March 2026), 1 required value missing, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (29 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, 7-day average57 mg/L≤ 45 mg/L27%
October 2025BOD, 5-day, 20 deg. C, monthly average57 mg/L≤ 30 mg/L90%
October 2025BOD, 5-day, percent removal, monthly average minimum78 %≥ 85 %47%
October 2025Coliform, fecal general, 30-day geometric mean< 2419.6 #/100mL≤ 200 #/100mL1110%
October 2025Coliform, fecal general, 7-day geometric mean< 2419.6 #/100mL≤ 400 #/100mL505%
November 2025BOD, 5-day, 20 deg. C, monthly average32.7 lb/d≤ 25 lb/d31%
November 2025BOD, 5-day, 20 deg. C, monthly average40 mg/L≤ 30 mg/L33%
November 2025BOD, 5-day, percent removal, monthly average minimum53 %≥ 85 %213%
November 2025Solids, suspended percent removal, monthly average minimum77 %≥ 85 %53%
March 2026Coliform, fecal general, 30-day geometric mean461.1 #/100mL≤ 200 #/100mL131%
March 2026Solids, suspended percent removal, monthly average minimum79 %≥ 85 %40%

Limits in force (29)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Flow ratemonthly average≤ .1 MGDall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 25 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 37.5 lb/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. C7-day averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. C7-day averagereport only (lb/d)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≤ 25 lb/dall year
Solids, total suspended7-day average≤ 37.5 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspended7-day averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspended7-day averagereport only (lb/d)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Phosphorus, total [as P]30-day arithmetic meanreport only (mg/L)all year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent 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/NY0257851 · MCP: https://passage-data.com/mcp