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Nassau Co DPW

Sewage treatment plant, major discharger, Wantagh, New York. NPDES permit NY0026859 expired Jan 31, 2026; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A quarterly (6 values), form F monthly (2 values), form M monthly (20 values), form Q quarterly (10 values), form T quarterly (4 values), form V monthly (11 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
8 values over a limit, 0 required values missing, 0 of 47 reports late

Limits in force (53)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximumreport only (deg C)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspended7-day average≤ 45 mg/Lall year
Solids, total suspended7-day arithmetic meanreport only (mg/L)all year
Solids, total suspended7-day arithmetic meanreport only (lb/d)all year
Solids, settleabledaily maximum≤ .3 mL/Lall year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, nitrite total [as N]daily maximumreport only (mg/L)all year
Nitrogen, nitrate 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]daily maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Cadmium, total [as Cd]daily maximumreport only (ug/L) (alert, not enforceable)all year
Cadmium, total [as Cd]daily maximum≤ 3 lb/d (alert, not enforceable)all year
Chromium, total [as Cr]daily maximumreport only (ug/L) (alert, not enforceable)all year
Chromium, total [as Cr]daily maximum≤ 8 lb/d (alert, not enforceable)all year
Copper, total [as Cu]daily maximumreport only (mg/L)all year
Copper, total [as Cu]daily maximum≤ 33 lb/dall year
Lead, total [as Pb]daily maximumreport only (ug/L) (alert, not enforceable)all year
Lead, total [as Pb]daily maximum≤ 3.3 lb/d (alert, not enforceable)all year
Nickel, total [as Ni]daily maximumreport only (ug/L) (alert, not enforceable)all year
Nickel, total [as Ni]daily maximum≤ 9.4 lb/d (alert, not enforceable)all year
Zinc, total [as Zn]daily maximumreport only (ug/L) (alert, not enforceable)all year
Zinc, total [as Zn]daily maximum≤ 72 lb/d (alert, not enforceable)all year
Phosphate, ortho [as P]daily maximumreport only (mg/L)all year
Phosphate, ortho [as P]daily maximumreport only (mg/L)all year
Toluenedaily maximumreport only (ug/L) (alert, not enforceable)all year
Toluenedaily maximum≤ 3.6 lb/d (alert, not enforceable)all year
Methylene chloridedaily maximumreport only (ug/L) (alert, not enforceable)all year
Methylene chloridedaily maximum≤ 14 lb/d (alert, not enforceable)all year
Di[2-ethylhexyl] phthalate [DEHP]daily maximumreport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ 72 MGDall year
Chlorine, total residualdaily maximum≤ 2 mg/Lall year
Enterococci30-day geometric meanreport only (#/100mL)all year
Mercury, total [as Hg]daily maximum≤ 50 ng/Lall year
Mercury, total [as Hg]rolling average≤ 19 ng/Lall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/100mLall year
Coliform, total generalmonthly median≤ 700 #/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]7-day averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]7-day averagereport only (lb/d)all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Carbonaceous oxygen demand, % removalmonthly average minimum≥ 85 %all year
Tetrachloroethylenedaily maximumreport only (ug/L) (alert, not enforceable)all year
Tetrachloroethylenedaily maximum≤ .8 lb/d (alert, not enforceable)all year
48Hr Acute Mysidopsis Bahiamaximum≤ 18.9 tox acute (alert, not enforceable)all year
TU 48Hr Acute Cyprinodon variegatusmaximum≤ 18.9 tox acute (alert, not enforceable)all year
TU Static Renewal Chronic Cyprinodeon variegatusmaximum≤ 130 tox chronic (alert, not enforceable)all year
TU Static Renewal 7-Day Chronic Americamysis bahia (formerly Mysidopsis bahia)maximum≤ 130 tox chronic (alert, not enforceable)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/NY0026859 · MCP: https://passage-data.com/mcp