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New Windsor (T)

Sewage treatment plant, major discharger, New Windsor, New York. NPDES permit NY0022446, in force until Dec 31, 2028. Last 12 months: over a limit 14 times (last June 2026), 4 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (30 values), form Q quarterly (3 values), form T quarterly
Last report on file
September 2026
Oct 2024 – Sep 2025
16 values over a limit, 14 required values missing, 5 of 17 reports late

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

All 14 values over a limit
Period endingParameterReportedLimitOver by
December 2025BOD, 5-day, 20 deg. C, monthly average> 46.4 mg/L≤ 42 mg/L—
December 2025BOD, 5-day, percent removal, monthly average minimum60.3 %≥ 65 %13%
December 2025Solids, suspended percent removal, monthly average minimum57.1 %≥ 70 %43%
January 2026BOD, 5-day, 20 deg. C, monthly average46.8 mg/L≤ 42 mg/L11%
January 2026BOD, 5-day, percent removal, monthly average minimum64.4 %≥ 65 %2%
January 2026Solids, suspended percent removal, monthly average minimum67.7 %≥ 70 %8%
February 2026BOD, 5-day, 20 deg. C, monthly average50.3 mg/L≤ 42 mg/L20%
March 2026BOD, 5-day, 20 deg. C, monthly average1828.8 lb/d≤ 1800 lb/d2%
March 2026Flow, in conduit or thru treatment plant, monthly average7.1 MGD≤ 5 MGD42%
April 2026BOD, 5-day, percent removal, monthly average minimum63.4 %≥ 65 %5%
May 2026BOD, 5-day, 20 deg. C, monthly average44.5 mg/L≤ 42 mg/L6%
May 2026Coliform, fecal general, 30-day geometric mean> 106.3 #/100mL≤ 200 #/100mL—
May 2026Coliform, fecal general, 7-day geometric mean> 2419.6 #/100mL≤ 400 #/100mL—
June 2026Nitrogen, ammonia total [as N], monthly average18.8 mg/L≤ 18 mg/L4%

Limits in force (85)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademonthly averagereport only (deg C)all year
Temperature, water deg. centigrademonthly averagereport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Oxygen, dissolved [DO]daily minimum≥ 4 mg/Lall year
Oxygen, dissolved [DO]daily minimumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 42 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 20 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 110 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 1300 lb/dall year
BOD, 5-day, 20 deg. Cmonthly average≤ 1800 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 1300 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 1900 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 4600 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
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
pHminimum≥ 6.5 SUall year
pHdaily minimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 42 mg/Lall year
Solids, total suspended7-day average≤ 10 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended7-day average≤ 76 mg/Lall year
Solids, total suspendedmonthly average≤ 1300 lb/dall year
Solids, total suspendedmonthly average≤ 1800 lb/dall year
Solids, total suspended7-day average≤ 670 lb/dall year
Solids, total suspended7-day average≤ 1900 lb/dall year
Solids, total suspended7-day average≤ 3200 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Solids, settleabledaily maximum≤ .4 mL/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 1.2 mg/LJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 1.9 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 14 mg/LJun–Sep
Nitrogen, ammonia total [as N]monthly average≤ 20 mg/LJan, Feb, Mar, Apr, May, Oct, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 18 mg/LJun–Sep
Nitrogen, ammonia total [as N]monthly average≤ 82 lb/dJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 120 lb/dJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Jun–Sep
Copper, total [as Cu]daily maximumreport only (ug/L) (alert, not enforceable)all year
Copper, total [as Cu]daily maximumreport only (ug/L)all year
Copper, total [as Cu]daily maximum≤ 3.6 lb/d (alert, not enforceable)all year
Copper, total [as Cu]daily maximum≤ 4.6 lb/dall year
Lead, total [as Pb]daily maximum≤ 13 ug/Lall year
Lead, total [as Pb]daily maximum≤ 44 ug/Lall year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 7.5 ug/Lall year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 100 ug/Lall year
Flow, in conduit or thru treatment plantmonthly average≤ 8 MGDall year
Flow, in conduit or thru treatment plantmonthly average≤ 5 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualdaily maximum≤ .03 mg/LMay–Oct
Chlorine, total residualdaily maximum≤ 55 ug/LMay–Oct
Chlorine, total residualdaily maximum≤ 82 ug/Lall year
Chlorine, total residualdaily maximumreport only (lb/d)May–Oct
Toxicity [acute], Ceriodaphnia dubiamaximum≤ .3 tox acute (alert, not enforceable)all year
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1.8 tox acuteall year
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronic (alert, not enforceable)all year
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 11 tox chronicall year
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ .3 tox acute (alert, not enforceable)all year
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1.8 tox acuteall year
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronic (alert, not enforceable)all year
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 11 tox chronicall year
Mercury, total [as Hg]rolling average≤ 16 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year
Mercury, total [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
Phenolic compounds, unchlorinatedmonthly average≤ 55 ug/Lall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
BOD, 5-day, percent removalmonthly average minimum≥ 65 %all year
BOD, 5-day, percent removalmonthly average minimum≥ 70 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 80 %all year
Solids, suspended percent removalmonthly average minimum≥ 70 %all year

New limits from Dec 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Phenolic compounds, total, monthly average5 ug/Lnew——

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/NY0022446 · MCP: https://passage-data.com/mcp