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Ithaca (C)

Sewage treatment plant, major discharger, Ithaca, New York. NPDES permit NY0026638, in force until Sep 30, 2029. Last 12 months: over a limit 2 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (30 values), form Q quarterly (3 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 4 required values missing, 3 of 19 reports late

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

Period endingParameterReportedLimitOver by
October 2025Coliform, fecal general, 7-day geometric mean467 #/100mL≤ 400 #/100mL17%
March 2026Solids, settleable, daily maximum.7 mL/L≤ .3 mL/L133%

Limits in force (35)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg Fall year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 2500 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 3800 lb/dall 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
pHminimum≥ 6 SUall year
pHmaximum≤ 9 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≤ 2500 lb/dall year
Solids, total suspended7-day average≤ 3800 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 21 mg/LJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 31 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jun–Oct
Nitrogen, nitrite total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]rolling average≤ 40 lb/dall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L) (alert, not enforceable)all year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 1.8 lb/d (alert, not enforceable)all year
Flow, in conduit or thru treatment plantmonthly average≤ 13 MGDall year
Chlorine, total residualdaily maximum≤ .1 mg/Lall year
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year
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.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NY0026638 · MCP: https://passage-data.com/mcp