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NJ American Water

Sewerage Systems, Clinton Twp, New Jersey. NPDES permit NJ0100528, in force until Jun 30, 2030. Last 12 months: over a limit 2 times (last February 2026), 6 required values missing, 4 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 26 days after each period: form A monthly (47 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 24 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
February 2026Chlorine produced oxidants, daily maximum.0106 kg/d≤ .009 kg/d18%
February 2026Chlorine produced oxidants, daily maximum.0106 kg/d≤ .009 kg/d18%

Limits in force (55)

ParameterStatisticLimitMonths
Temperature, water deg. centigradeinstantaneous minimumreport only (deg C)all year
Temperature, water deg. centigrademonthly averagereport only (deg C)all year
Temperature, water deg. centigradeinstantaneous maximumreport only (deg C)all year
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 2.84 kg/dall year
Solids, total suspendedweekly average≤ 4.26 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Solids, total suspendedmonthly average minimum≥ 85 %all year
Oil & Greasemonthly average≤ 10 mg/Lall year
Oil & Greaseinstantaneous maximum≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 25 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 37 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 2.36 kg/dall year
Nitrogen, ammonia total [as N]daily maximum≤ 3.5 kg/dall year
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year
Nitrogen, nitrate total [as N]monthly averagereport only (kg/d)all year
Nitrogen, nitrate total [as N]daily maximumreport only (kg/d)all year
Phosphorus, total [as P]monthly average≤ 4.58 mg/LJan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]monthly average≤ 4.24 mg/LMay–Oct
Phosphorus, total [as P]weekly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]weekly averagereport only (mg/L)May–Oct
Phosphorus, total [as P]monthly averagereport only (kg/d)Jan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]monthly averagereport only (kg/d)May–Oct
Phosphorus, total [as P]weekly averagereport only (kg/d)Jan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]weekly averagereport only (kg/d)May–Oct
Chlorine produced oxidantsmonthly averagereport only (mg/L)all year
Chlorine produced oxidantsdaily maximum≤ .1 mg/Lall year
Chlorine produced oxidantsmonthly averagereport only (kg/d)all year
Chlorine produced oxidantsdaily maximum≤ .009 kg/dall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
E. colimonthly geometric mean≤ 126 #/100mLall year
E. coliinstantaneous maximumreport only (#/100mL)all year
Phosphorous, in total orthophosphatemonthly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Phosphorous, in total orthophosphatemonthly averagereport only (mg/L)May–Oct
Phosphorous, in total orthophosphateweekly averagereport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec
Phosphorous, in total orthophosphateweekly averagereport only (mg/L)May–Oct
Phosphorous, in total orthophosphatemonthly averagereport only (kg/d)Jan, Feb, Mar, Apr, Nov, Dec
Phosphorous, in total orthophosphatemonthly averagereport only (kg/d)May–Oct
Phosphorous, in total orthophosphateweekly averagereport only (kg/d)Jan, Feb, Mar, Apr, Nov, Dec
Phosphorous, in total orthophosphateweekly averagereport only (kg/d)May–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 2.36 kg/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 3.8 kg/dall year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly average minimum≥ 85 %all year
LC50 Static 48Hr Acute Ceriodaphnia dubiaminimumreport only (%)all year

New limits from Jul 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Phosphorus, total [as P], monthly average1.63 mg/L (May–Oct)tighter0.35 mg/L (5 values)0.215×
Phosphorus, total [as P], monthly average2.32 mg/L (Jan, Feb, Mar, Apr, Nov, Dec)tighter0.4585 mg/L (6 values)0.198×

Cited limits by parameter: New Jersey's rules and the federal ones.

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