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Des (Monroe County)

Sewage treatment plant, major discharger, Hilton, New York. NPDES permit NY0028231 expired Jan 31, 2019; its limits still apply. Last 12 months: over a limit 2 times (last April 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (33 values), form V monthly (12 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 27 reports late

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

Period endingParameterReportedLimitOver by
March 2026Flow, in conduit or thru treatment plant, monthly average22.4 MGD≤ 22 MGD2%
April 2026Flow, in conduit or thru treatment plant, monthly average22.2 MGD≤ 22 MGD1%

Limits in force (56)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
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)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≤ 5504 lb/dall year
Solids, total suspended7-day average≤ 8250 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspended7-day averagereport only (mg/L)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Solids, settleabledaily maximumreport only (mL/L)all year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Cyanide, total [as CN]daily maximumreport only (mg/L) (alert, not enforceable)all year
Cyanide, total [as CN]daily maximum≤ 11 lb/d (alert, not enforceable)all year
Barium, total [as Ba]daily maximumreport only (mg/L) (alert, not enforceable)all year
Barium, total [as Ba]daily maximum≤ 290 lb/d (alert, not enforceable)all year
Copper, total [as Cu]daily maximumreport only (mg/L) (alert, not enforceable)all year
Copper, total [as Cu]daily maximum≤ 6.1 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≤ 249 lb/d (alert, not enforceable)all year
Manganese, total [as Mn]daily maximumreport only (mg/L) (alert, not enforceable)all year
Manganese, total [as Mn]daily maximum≤ 37 lb/d (alert, not enforceable)all year
Zinc, total recoverabledaily maximumreport only (mg/L) (alert, not enforceable)all year
Zinc, total recoverabledaily maximum≤ 20 lb/d (alert, not enforceable)all year
Nitrogen, ammonia, total [as NH3]daily maximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ 22 MGDall year
Chlorine, total residualdaily maximum≤ 2 mg/Lall year
Chlorine, total residualdaily maximum≤ .05 mg/Lall year
Chlorine, total residualdaily maximum≤ 1.5 mg/Lall year
Chlorine, total residualdaily maximum≤ .2 mg/Lall year
E. colidaily maximumreport only (#/100mL)all year
Mercury, total [as Hg]12-month average≤ 10.6 ng/Lall year
Mercury, total [as Hg]daily maximum≤ 50 ng/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, 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≤ 4587 lb/dall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 7339 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
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.

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/NY0028231 · MCP: https://passage-data.com/mcp