Passage Data · Check a report · Use it from your AI

Potsdam (V)

Sewage treatment plant, major discharger, Potsdam, New York. NPDES permit NY0020818 expired Jul 31, 2025; its limits still apply. Last 12 months: over a limit 4 times (last January 2026), 2 of 13 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (37 values), form T quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
7 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025Phosphorus, total [as P], monthly average≤ 2.05 mg/L≤ 1 mg/L105%
November 2025Phosphorus, total [as P], monthly average≤ 1.09 mg/L≤ 1 mg/L9%
December 2025Phosphorus, total [as P], monthly average≤ 1.15 mg/L≤ 1 mg/L15%
January 2026BOD, 5-day, percent removal, monthly average minimum≥ 83.59 %≥ 85 %9%

Limits in force (41)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all 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≤ 880 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 1300 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≤ 880 lb/dall year
Solids, total suspended7-day average≤ 1300 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]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantmonthly average≤ 3.5 MGDall year
Chlorine, total residualdaily maximum≤ 1 mg/Lall year
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 6 tox acute (alert, not enforceable)all year
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 40 tox chronic (alert, not enforceable)all year
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 6 tox acute (alert, not enforceable)all year
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 40 tox chronic (alert, not enforceable)all year
Mercury, dissolved [as Hg]daily maximum≤ 50 ng/Lall year
Mercury, dissolved [as Hg]daily maximumreport only (lb/d)all year
Mercury, dissolved [as Hg]daily maximumreport only (ng/L)all year
Mercury, dissolved [as Hg]daily maximumreport only (lb/d)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

How strict are these limits?

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

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NY0020818 · MCP: https://passage-data.com/mcp