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Alden (T)

Sewage treatment plant, Alden, Town Of, New York. NPDES permit NY0021857, in force until Jul 31, 2031. Last 12 months: over a limit 19 times (last September 2026), 3 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (33 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
13 values over a limit, 29 required values missing, 3 of 12 reports late

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

All 19 values over a limit
Period endingParameterReportedLimitOver by
November 2025Solids, suspended percent removal, monthly average minimum82.4 %≥ 85 %17%
December 2025pH, maximum8.8 SU≤ 8.5 SU—
February 2026Carbonaceous oxygen demand, % removal, monthly average minimum> 82.1 %≥ 85 %3%
February 2026Flow, in conduit or thru treatment plant, monthly average.029 MGD≤ .026 MGD12%
February 2026Solids, suspended percent removal, monthly average minimum> 75.6 %≥ 85 %11%
March 2026Carbonaceous oxygen demand, % removal, monthly average minimum73.7 %≥ 85 %75%
March 2026Flow, in conduit or thru treatment plant, monthly average.037 MGD≤ .026 MGD42%
April 2026Flow, in conduit or thru treatment plant, monthly average.03 MGD≤ .026 MGD15%
May 2026Coliform, fecal general, 30-day geometric mean> 6000 #/100mL≤ 200 #/100mL—
May 2026Coliform, fecal general, 7-day geometric mean> 6000 #/100mL≤ 400 #/100mL—
June 2026Coliform, fecal general, 30-day geometric mean> 6000 #/100mL≤ 200 #/100mL—
June 2026Coliform, fecal general, 7-day geometric mean> 6000 #/100mL≤ 400 #/100mL—
June 2026Oxygen, dissolved [DO], daily minimum3.3 mg/L≥ 4 mg/L18%
July 2026Coliform, fecal general, 30-day geometric mean> 6000 #/100mL≤ 200 #/100mL—
July 2026Coliform, fecal general, 7-day geometric mean> 6000 #/100mL≤ 400 #/100mL—
July 2026Oxygen, dissolved [DO], daily minimum2.4 mg/L≥ 4 mg/L40%
August 2026Oxygen, dissolved [DO], daily minimum3.2 mg/L≥ 4 mg/L20%
September 2026Coliform, fecal general, 30-day geometric mean220 #/100mL≤ 200 #/100mL10%
September 2026Solids, suspended percent removal, monthly average minimum47.7 %≥ 85 %249%

Limits in force (35)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Oxygen, dissolved [DO]daily minimumreport only (mg/L)Jan, Feb, Mar, Apr, May, Nov, Dec
Oxygen, dissolved [DO]daily minimum≥ 4 mg/LJun–Oct
pHminimum≥ 6.5 SUall year
pHmaximum≤ 8.5 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≤ 6.51 lb/dall year
Solids, total suspended7-day average≤ 9.76 lb/dall year
Solids, total suspended7-day averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspended7-day averagereport only (lb/d)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, settleabledaily maximum≤ .1 mL/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Nitrogen, ammonia total [as N]daily maximum≤ 19.7 mg/LJun–Oct
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ .026 MGDall year
Chlorine, total residualdaily maximum≤ .08 mg/LMay–Oct
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Oct
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 5.42 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 8.67 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]7-day averagereport only (lb/d)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport 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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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NY0021857 · MCP: https://passage-data.com/mcp