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Chemung County Sewer Districts

Sewage treatment plant, major discharger, Elmira, New York. NPDES permit NY0036986 expired Sep 30, 2026; its limits still apply. Last 12 months: over a limit 52 times (last August 2026), 12 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (72 values), form Q quarterly (16 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
53 values over a limit, 0 required values missing, 0 of 16 reports late

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

All 52 values over a limit
Period endingParameterReportedLimitOver by
October 2025Phosphorus, total [as P], monthly average1.6 mg/L≤ 1 mg/L60%
October 2025Thallium, total [as Tl], daily maximum.8177 lb/d≤ .41 lb/d99%
October 2025Total phenols, daily maximum.7704 lb/d≤ .61 lb/d26%
November 2025Phosphorus, total [as P], monthly average1.46 mg/L≤ 1 mg/L46%
December 2025BOD, carbonaceous [5 day, 20 C], 7-day average78.45 mg/L≤ 40 mg/L96%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average47.39 mg/L≤ 25 mg/L90%
December 2025Phosphorus, total [as P], 12-month total18960.3 lb/yr≤ 18300 lb/yr4%
December 2025Phosphorus, total [as P], monthly average1.49 mg/L≤ 1 mg/L49%
December 2025Solids, suspended percent removal, monthly average minimum73.35 %≥ 75 %7%
December 2025Solids, total suspended, monthly average33.02 mg/L≤ 30 mg/L10%
December 2025Thallium, total [as Tl], daily maximum2.8489 lb/d≤ .41 lb/d595%
January 2026BOD, carbonaceous [5 day, 20 C], 7-day average132.15 mg/L≤ 40 mg/L230%
January 2026BOD, carbonaceous [5 day, 20 C], 7-day average4643.14 lb/d≤ 4100 lb/d13%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average3136.27 lb/d≤ 2500 lb/d25%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average88.55 mg/L≤ 25 mg/L254%
January 2026Carbonaceous oxygen demand, % removal, monthly average minimum57.18 %≥ 70 %43%
January 2026Phosphorus, total [as P], 12-month total19998.97 lb/yr≤ 18300 lb/yr9%
January 2026Phosphorus, total [as P], monthly average1.54 mg/L≤ 1 mg/L54%
January 2026Solids, suspended percent removal, monthly average minimum56.15 %≥ 75 %75%
January 2026Solids, total suspended, 7-day average56 mg/L≤ 45 mg/L24%
January 2026Solids, total suspended, monthly average47.37 mg/L≤ 30 mg/L58%
January 2026Thallium, total [as Tl], daily maximum1.9833 lb/d≤ .41 lb/d384%
February 2026BOD, carbonaceous [5 day, 20 C], 7-day average107.59 mg/L≤ 40 mg/L169%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average58.76 mg/L≤ 25 mg/L135%
February 2026Carbonaceous oxygen demand, % removal, monthly average minimum66.79 %≥ 70 %11%
February 2026Phosphorus, total [as P], 12-month total20559.92 lb/yr≤ 18300 lb/yr12%
February 2026Phosphorus, total [as P], monthly average1.59 mg/L≤ 1 mg/L59%
February 2026Solids, suspended percent removal, monthly average minimum69.89 %≥ 75 %20%
February 2026Solids, total suspended, monthly average34.67 mg/L≤ 30 mg/L16%
February 2026Thallium, total [as Tl], daily maximum2.006 lb/d≤ .41 lb/d389%
March 2026BOD, carbonaceous [5 day, 20 C], 7-day average43.77 mg/L≤ 40 mg/L9%
March 2026Carbonaceous oxygen demand, % removal, monthly average minimum61.99 %≥ 70 %27%
March 2026Oxygen, dissolved [DO], daily minimum5.71 mg/L≥ 6 mg/L5%
March 2026Phosphorus, total [as P], 12-month total21560.99 lb/yr≤ 18300 lb/yr18%
March 2026Phosphorus, total [as P], monthly average1.04 mg/L≤ 1 mg/L4%
March 2026Solids, suspended percent removal, monthly average minimum64.94 %≥ 75 %40%
April 2026Antimony, total [as Sb], daily maximum2.0742 lb/d≤ 1 lb/d107%
April 2026Carbonaceous oxygen demand, % removal, monthly average minimum61.57 %≥ 70 %28%
April 2026Phosphorus, total [as P], 12-month total22196.6 lb/yr≤ 18300 lb/yr21%
April 2026Solids, suspended percent removal, monthly average minimum54.53 %≥ 75 %82%
April 2026Total phenols, daily maximum1.7082 lb/d≤ .61 lb/d180%
May 2026Carbonaceous oxygen demand, % removal, monthly average minimum68.27 %≥ 70 %6%
May 2026Phosphorus, total [as P], 12-month total22211.52 lb/yr≤ 18300 lb/yr21%
May 2026Solids, suspended percent removal, monthly average minimum55.25 %≥ 75 %79%
June 2026Phosphorus, total [as P], 12-month total21689.9 lb/yr≤ 18300 lb/yr19%
June 2026Phosphorus, total [as P], monthly average1.08 mg/L≤ 1 mg/L8%
June 2026Solids, suspended percent removal, monthly average minimum72.52 %≥ 75 %10%
July 2026Phosphorus, total [as P], 12-month total21357.11 lb/yr≤ 18300 lb/yr17%
July 2026Phosphorus, total [as P], monthly average1.29 mg/L≤ 1 mg/L29%
July 2026Solids, suspended percent removal, monthly average minimum74.96 %≥ 75 %0%
August 2026Phosphorus, total [as P], 12-month total20414.77 lb/yr≤ 18300 lb/yr12%
August 2026Phosphorus, total [as P], monthly average1.01 mg/L≤ 1 mg/L1%

Limits in force (98)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Oxygen demand, ultimatedaily maximumreport only (mg/L)Jun–Oct
Oxygen demand, ultimatedaily maximum≤ 3400 lb/dJun–Oct
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall 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≤ 3100 lb/dall year
Solids, total suspended7-day average≤ 4600 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspended7-day averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspended7-day averagereport only (lb/d)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, total [as N]12-month total≤ 292300 lb/yrall year
Nitrogen, total [as N]monthly totalreport only (lb/mo)all year
Nitrogen, total [as N]12-month total≤ 602300 lb/yrall year
Nitrogen, ammonia total [as N]monthly average≤ 5.7 mg/LJun–Oct
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 310 lb/dJun–Oct
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Jan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)Jun–Oct
Nitrogen, nitrite total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrite total [as N]monthly averagereport only (lb/d)all year
Nitrogen, nitrite total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrite total [as N]monthly averagereport only (lb/d)all year
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrate total [as N]monthly averagereport only (lb/d)all year
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrate total [as N]monthly averagereport only (lb/d)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (lb/d)all year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]12-month total≤ 18300 lb/yrall year
Phosphorus, total [as P]monthly totalreport only (lb/mo)all year
Cyanide, free [amenable to chlorination]daily maximumreport only (mg/L)all year
Cyanide, free [amenable to chlorination]daily maximum≤ 2.7 lb/dall year
Fluoride, total [as F]daily maximumreport only (mg/L) (alert, not enforceable)all year
Fluoride, total [as F]daily maximum≤ 58 lb/d (alert, not enforceable)all year
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year
Cadmium, total [as Cd]daily maximum≤ .23 lb/dall year
Copper, total [as Cu]daily maximumreport only (mg/L) (alert, not enforceable)all year
Copper, total [as Cu]daily maximum≤ 3.3 lb/d (alert, not enforceable)all year
Iron, total [as Fe]daily maximumreport only (mg/L) (alert, not enforceable)all year
Iron, total [as Fe]daily maximum≤ 18 lb/d (alert, not enforceable)all year
Lead, total [as Pb]daily maximumreport only (mg/L)all year
Lead, total [as Pb]daily maximum≤ .41 lb/dall year
Thallium, total [as Tl]daily maximumreport only (mg/L)all year
Thallium, total [as Tl]daily maximum≤ .41 lb/dall year
Zinc, total [as Zn]daily maximumreport only (mg/L) (alert, not enforceable)all year
Zinc, total [as Zn]daily maximum≤ 2.4 lb/d (alert, not enforceable)all year
Antimony, total [as Sb]daily maximumreport only (mg/L)all year
Antimony, total [as Sb]daily maximum≤ 1 lb/dall year
Aluminum, dissolved [as Al]daily maximumreport only (mg/L)all year
Aluminum, dissolved [as Al]daily maximum≤ 12 lb/dall year
Total phenolsdaily maximumreport only (mg/L)all year
Total phenolsdaily maximum≤ .61 lb/dall year
1,1,1-Trichloroethanedaily maximumreport only (mg/L) (alert, not enforceable)all year
1,1,1-Trichloroethanedaily maximum≤ 2 lb/d (alert, not enforceable)all year
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (mg/L) (alert, not enforceable)all year
Di[2-ethylhexyl] phthalate [DEHP]daily maximum≤ 1 lb/d (alert, not enforceable)all year
Di-n-butyl phthalatedaily maximumreport only (mg/L) (alert, not enforceable)all year
Di-n-butyl phthalatedaily maximum≤ 1 lb/d (alert, not enforceable)all year
Flow, in conduit or thru treatment plantrolling average≤ 12 MGDall year
Chlorine, total residualmonthly averagereport only (ug/L)May–Oct
Chlorine, total residualmonthly averagereport only (ug/L)May–Oct
Chlorine, total residualdaily maximum≤ 32 ug/LMay–Oct
Chlorine, total residualdaily maximumreport only (ug/L)May–Oct
Chlorine, total residualmonthly averagereport only (lb/d)May–Oct
Chlorine, total residualmonthly averagereport only (lb/d)May–Oct
Chlorine, total residualdaily maximum≤ 3.2 lb/dMay–Oct
Chlorine, total residualdaily maximumreport only (lb/d)May–Oct
Mercury, total [as Hg]rolling average≤ 12 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Oct
Coliform, fecal general30-day geometric meanreport only (#/100mL)May–Oct
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Oct
Coliform, fecal general7-day geometric meanreport only (#/100mL)May–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 2500 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 4100 lb/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]7-day averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d)all year
BOD, carbonaceous [5 day, 20 C]7-day averagereport only (lb/d)all year
Solids, suspended percent removalmonthly average minimum≥ 75 %all year
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 70 %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/NY0036986 · MCP: https://passage-data.com/mcp