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Phelps (V)

Sewage treatment plant, Phelps, New York. NPDES permit NY0024651, in force until Sep 30, 2029. Last 12 months: over a limit 3 times (last April 2026), 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (24 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 1 required value missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
February 2026BOD, 5-day, 20 deg. C, monthly average41 mg/L≤ 40 mg/L3%
March 2026Flow, in conduit or thru treatment plant, monthly average.326509 MGD≤ .304 MGD7%
April 2026Flow, in conduit or thru treatment plant, monthly average.366837 MGD≤ .304 MGD21%

Limits in force (31)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 40 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 55 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 101 lb/dall year
BOD, 5-day, 20 deg. C7-day average≤ 139 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
pHdaily minimum≥ 6.5 SUall year
pHdaily maximum≤ 8.5 SUall year
pHdaily minimumreport only (SU)all year
pHdaily maximumreport only (SU)all year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 40 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended7-day average≤ 55 mg/Lall year
Solids, total suspendedmonthly average≤ 76 lb/dall year
Solids, total suspendedmonthly average≤ 101 lb/dall year
Solids, total suspended7-day average≤ 110 lb/dall year
Solids, total suspended7-day average≤ 139 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
Solids, settleabledaily maximumreport only (mL/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ .304 MGDall year
Flow, in conduit or thru treatment plantmonthly average≤ .304 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year
BOD, 5-day, percent removalmonthly average minimum≥ 80 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 80 %all year

New limits from Jan 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
BOD, carbonaceous [5 day, 20 C], 7-day average100 lb/dnew——
BOD, carbonaceous [5 day, 20 C], 7-day average40 mg/Lnew——
BOD, carbonaceous [5 day, 20 C], monthly average63 lb/dnew——
BOD, carbonaceous [5 day, 20 C], monthly average25 mg/Lnew——
Nitrogen, ammonia total [as N], monthly average19 lb/d (Jan, Feb, Mar, Apr, May, Nov, Dec)new——
Nitrogen, ammonia total [as N], monthly average7.7 mg/L (Jan, Feb, Mar, Apr, May, Nov, Dec)new——
Nitrogen, ammonia total [as N], monthly average2.5 mg/L (Jun–Oct)new——
Nitrogen, ammonia total [as N], monthly average6.3 lb/d (Jun–Oct)new——

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/NY0024651 · MCP: https://passage-data.com/mcp