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Ellicottville (V)

Sewage treatment plant, Ellicottville, New York. NPDES permit NY0023574, in force until Jan 31, 2029. Last 12 months: over a limit 5 times (last June 2026), 1 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (26 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
11 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
December 2025Flow, in conduit or thru treatment plant, monthly average2.113 MGD≤ 1.9 MGD11%
March 2026Carbonaceous oxygen demand, % removal, monthly average minimum72.4 %≥ 85 %84%
April 2026Carbonaceous oxygen demand, % removal, monthly average minimum81.7 %≥ 85 %22%
May 2026Carbonaceous oxygen demand, % removal, monthly average minimum75.4 %≥ 85 %64%
June 2026Carbonaceous oxygen demand, % removal, monthly average minimum74.1 %≥ 85 %73%

Limits in force (45)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Jul–Oct
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Jan, Feb, Mar, Apr, May, Jun, Nov, Dec
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Jul–Oct
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)Jan, Feb, Mar, Apr, May, Jun, Nov, Dec
Oxygen demand, ultimatedaily maximum≤ 120 mg/LJan, Feb, Mar, Apr, May, Jun, Nov, Dec
Oxygen demand, ultimatedaily maximum≤ 23 mg/LJul–Oct
Oxygen, dissolved [DO]daily minimum≥ 7 mg/LJul–Oct
pHminimum≥ 6 SUJan, Feb, Mar, Apr, May, Jun, Nov, Dec
pHminimum≥ 6.5 SUJul–Oct
pHmaximum≤ 9 SUJan, Feb, Mar, Apr, May, Jun, Nov, Dec
pHmaximum≤ 8.5 SUJul–Oct
pHminimumreport only (SU)Jul–Oct
pHminimumreport only (SU)Jan, Feb, Mar, Apr, May, Jun, Nov, Dec
pHmaximumreport only (SU)Jul–Oct
pHmaximumreport only (SU)Jan, Feb, Mar, Apr, May, Jun, Nov, Dec
Solids, total suspendedmonthly average≤ 22 mg/LJul–Oct
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, May, Jun, Nov, Dec
Solids, total suspended7-day average≤ 33 mg/LJul–Oct
Solids, total suspended7-day average≤ 45 mg/LJan, Feb, Mar, Apr, May, Jun, Nov, Dec
Solids, total suspendedmonthly average≤ 239 lb/dJul–Oct
Solids, total suspendedmonthly average≤ 475 lb/dJan, Feb, Mar, Apr, May, Jun, Nov, Dec
Solids, total suspended7-day average≤ 358 lb/dJul–Oct
Solids, total suspended7-day average≤ 713 lb/dJan, Feb, Mar, Apr, May, Jun, Nov, Dec
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, settleabledaily maximum≤ .1 mL/LJul–Oct
Solids, settleabledaily maximum≤ .3 mL/LJan, Feb, Mar, Apr, May, Jun, Nov, Dec
Solids, settleabledaily maximumreport only (mL/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Nitrogen, ammonia, total [as NH3]monthly average≤ 1.2 mg/LJul–Oct
Nitrogen, ammonia, total [as NH3]monthly average≤ 6.8 mg/LJan, Feb, Mar, Apr, May, Jun, Nov, Dec
Flow, in conduit or thru treatment plantmonthly average≤ 1.9 MGDJan, Feb, Mar, Apr, May, Jun, Nov, Dec
Flow, in conduit or thru treatment plantmonthly average≤ 1.3 MGDJul–Oct
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, May, Jun, Nov, Dec
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/LJan, Feb, Mar, Apr, May, Jun, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Jul–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 396 lb/dJan, Feb, Mar, Apr, May, Jun, Nov, Dec
BOD, carbonaceous [5 day, 20 C]7-day average≤ 634 lb/dJan, Feb, Mar, Apr, May, Jun, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, May, Jun, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Jul–Oct
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/NY0023574 · MCP: https://passage-data.com/mcp