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Shawangunk (T)

Sewage treatment plant, Wallkill, New York. NPDES permit NY0021521, in force until Mar 31, 2027. Last 12 months: over a limit 4 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (7 values), form X monthly (26 values)
Renewal application due
Oct 2, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
2 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
January 2026BOD, 5-day, percent removal, monthly average minimum83.1 %≥ 85 %13%
May 2026Chlorine, total residual, daily maximum2 mg/L≤ .1 mg/L1900%
July 2026BOD, 5-day, percent removal, monthly average minimum84 %≥ 85 %7%
July 2026Coliform, fecal general, 7-day geometric mean686.7 #/100mL≤ 400 #/100mL72%

Limits in force (42)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. C30-day average≤ 159 lb/dall year
BOD, 5-day, 20 deg. C30-day average≤ 209 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 238 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 313 lb/dall year
BOD, 5-day, 20 deg. C30-day averagereport only (mg/L)all year
BOD, 5-day, 20 deg. C30-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 suspended30-day average≤ 30 mg/Lall year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended30-day average≤ 159 lb/dall year
Solids, total suspended30-day average≤ 209 lb/dall year
Solids, total suspended7-day average≤ 238 lb/dall year
Solids, total suspended7-day average≤ 313 lb/dall year
Solids, total suspended30-day averagereport only (mg/L)all year
Solids, total suspended30-day averagereport only (lb/d)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Chromium, total [as Cr]daily maximum≤ .11 lb/d (alert, not enforceable)all year
Copper, total [as Cu]daily maximum≤ .21 lb/d (alert, not enforceable)all year
Manganese, total [as Mn]daily maximum≤ .16 lb/d (alert, not enforceable)all year
Nickel, total [as Ni]daily maximum≤ .48 lb/d (alert, not enforceable)all year
Zinc, total [as Zn]daily maximum≤ 1.22 lb/d (alert, not enforceable)all year
Antimony, total [as Sb]daily maximum≤ .24 lb/d (alert, not enforceable)all year
Aluminum, total [as Al]daily maximum≤ 2.59 lb/d (alert, not enforceable)all year
Flow, in conduit or thru treatment plant30-day average≤ .635 MGDall year
Flow, in conduit or thru treatment plant30-day average≤ .835 MGDall year
Chlorine, total residualdaily maximum≤ .1 mg/LMay–Oct
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Oct
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Oct
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/NY0021521 · MCP: https://passage-data.com/mcp