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Thompson (T)

Sewage treatment plant, Monticello, New York. NPDES permit NY0035645, in force until Aug 31, 2029. Last 12 months: over a limit 24 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (25 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
14 values over a limit, 18 required values missing, 0 of 12 reports late

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

All 24 values over a limit
Period endingParameterReportedLimitOver by
November 2025BOD, carbonaceous [5 day, 20 C], daily maximum32 mg/L≤ 5 mg/L540%
November 2025BOD, carbonaceous [5 day, 20 C], daily maximum41.1 lb/d≤ 17.1 lb/d140%
November 2025Carbonaceous oxygen demand, % removal, monthly average minimum74 %≥ 85 %73%
November 2025Nitrogen, ammonia, total [as NH3], monthly average< 8.43 mg/L≤ 2.2 mg/L283%
November 2025Phosphorus, total [as P], monthly average< 2.1 mg/L≤ .5 mg/L320%
November 2025Solids, suspended percent removal, monthly average minimum30.9 %≥ 85 %361%
November 2025Solids, total suspended, daily maximum113.3 mg/L≤ 10 mg/L1033%
November 2025Solids, total suspended, daily maximum145.6 lb/d≤ 34.2 lb/d326%
December 2025Solids, total suspended, daily maximum14 mg/L≤ 10 mg/L40%
December 2025Solids, total suspended, daily maximum43.4 lb/d≤ 34.2 lb/d27%
January 2026Nitrogen, ammonia, total [as NH3], monthly average3.7 mg/L≤ 2.2 mg/L68%
February 2026Nitrogen, ammonia, total [as NH3], monthly average3.3 mg/L≤ 2.2 mg/L50%
March 2026Flow, in conduit or thru treatment plant, monthly average.51 MGD≤ .41 MGD24%
March 2026Nitrogen, ammonia, total [as NH3], monthly average4.93 mg/L≤ 2.2 mg/L124%
March 2026Solids, suspended percent removal, monthly average minimum79.2 %≥ 85 %39%
March 2026Solids, total suspended, daily maximum15 mg/L≤ 10 mg/L50%
March 2026Solids, total suspended, daily maximum50.2 lb/d≤ 34.2 lb/d47%
April 2026Nitrogen, ammonia, total [as NH3], monthly average< 3.1 mg/L≤ 2.2 mg/L41%
June 2026Solids, total suspended, daily maximum10.4 mg/L≤ 10 mg/L4%
July 2026Nitrogen, ammonia, total [as NH3], monthly average5.2 mg/L≤ 1.1 mg/L373%
July 2026Phosphorus, total [as P], monthly average.6 mg/L≤ .5 mg/L20%
July 2026Solids, suspended percent removal, monthly average minimum83.1 %≥ 85 %13%
July 2026Solids, total suspended, daily maximum24.5 mg/L≤ 10 mg/L145%
July 2026Solids, total suspended, daily maximum48.1 lb/d≤ 34.2 lb/d41%

Limits in force (44)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximum≤ 70 deg F (alert, not enforceable)all year
Oxygen, dissolved [DO]daily minimum≥ 7 mg/Lall year
Oxygen, dissolved [DO]daily minimum≥ 7 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendeddaily maximum≤ 10 mg/Lall year
Solids, total suspendeddaily maximum≤ 10 mg/Lall year
Solids, total suspendeddaily maximum≤ 34.2 lb/dall year
Solids, total suspendeddaily maximum≤ 34.2 lb/dall year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Solids, total suspendeddaily maximumreport only (lb/d)all year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly average≤ 8.39 lb/dall year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ .5 mg/Lall year
Phosphorus, total [as P]monthly average≤ 1.7 lb/dall year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Nitrogen, ammonia, total [as NH3]monthly average≤ 1.1 mg/LJun–Oct
Nitrogen, ammonia, total [as NH3]monthly average≤ 2.2 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia, total [as NH3]monthly averagereport only (lb/d)Jun–Oct
Nitrogen, ammonia, total [as NH3]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, May, Nov, Dec
Flow, in conduit or thru treatment plantmonthly average≤ .475 MGDall year
Flow, in conduit or thru treatment plantmonthly average≤ .41 MGDall year
Chlorine, total residualdaily maximum≤ .03 mg/LMay–Oct
Chlorine, total residualdaily maximum≤ 2 mg/LMay–Oct
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Oct
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Oct
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Oct
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 5 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 5 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 17.1 lb/dall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 17.1 lb/dall year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)all year
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (lb/d)all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Carbonaceous oxygen demand, % 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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Your permit document is the final word. As JSON: /api/v1/permits/NY0035645 · MCP: https://passage-data.com/mcp