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Inserra West Milford LLC

Sewerage Systems, West Milford Twp, New Jersey. NPDES permit NJ0024414, in force until Dec 31, 2030. Last 12 months: over a limit 2 times (last January 2026), 8 required values missing, 1 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 26 days after each period: form A monthly (61 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 4 required values missing, 3 of 12 reports late

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

Period endingParameterReportedLimitOver by
December 2025Zinc, total recoverable, monthly average384 ug/L≤ 308.7 ug/L24%
January 2026Chlorine produced oxidants, daily maximum< .003 kg/d≤ .0014 kg/d114%

Limits in force (65)

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
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≥ 5 mg/Lall year
Oxygen, dissolved [DO]minimum weekly averagereport only (mg/L)all year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
pHinstantaneous minimumreport only (SU)all year
pHinstantaneous maximumreport only (SU)all year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 2.27 kg/dall year
Solids, total suspendedweekly average≤ 3.4 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≤ 5.1 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 4.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 7.4 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 6.6 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ .39 kg/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ .34 kg/dMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ .56 kg/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ .5 kg/dMay–Oct
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 averagereport only (mg/L)all year
Phosphorus, total [as P]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly average≤ .02 kg/dall year
Phosphorus, total [as P]weekly averagereport only (kg/d)all year
Zinc, total recoverablemonthly average≤ 308.7 ug/Lall year
Zinc, total recoverabledaily maximum≤ 507.09 ug/Lall year
Zinc, total recoverablemonthly average≤ 23.37 g/dall year
Zinc, total recoverabledaily maximum≤ 38.39 g/dall year
Copper, total recoverablemonthly average≤ 36.06 ug/Lall year
Copper, total recoverabledaily maximum≤ 59.24 ug/Lall year
Copper, total recoverablemonthly average≤ 2.73 g/dall year
Copper, total recoverabledaily maximum≤ 4.48 g/dall year
Chlorine produced oxidantsmonthly average≤ .02 mg/Lall year
Chlorine produced oxidantsdaily maximum≤ .02 mg/Lall year
Chlorine produced oxidantsmonthly average≤ .001 kg/dall year
Chlorine produced oxidantsdaily maximum≤ .0014 kg/dall year
Bromodichloromethane, effluentmonthly averagereport only (ug/L)all year
Bromodichloromethane, effluentdaily maximumreport only (ug/L)all year
Bromodichloromethane, effluentmonthly averagereport only (g/d)all year
Bromodichloromethane, effluentdaily maximumreport only (g/d)all 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
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≤ 1.9 kg/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 3 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
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaminimum≥ 14 %all year

New limits from Jan 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Bromodichloromethane, effluent, monthly average5.88 ug/Lnew9.005 ug/L (8 values, 2 below detection)1.53×
Bromodichloromethane, effluent, daily maximum0.79 g/dnew0.0469 g/d (8 values, 2 below detection)0.0594×
Bromodichloromethane, effluent, daily maximum10.46 ug/Lnew9.005 ug/L (8 values, 2 below detection)0.861×
Bromodichloromethane, effluent, monthly average0.45 g/dnew0.0469 g/d (8 values, 2 below detection)0.104×
Copper, total recoverable, daily maximum1.06 g/dtighter0.07 g/d (11 values, 7 below detection)—
Copper, total recoverable, daily maximum14 ug/Ltighter10 ug/L (8 values, 6 below detection)—
Copper, total recoverable, monthly average9.25 ug/Ltighter10 ug/L (11 values, 7 below detection)—
Copper, total recoverable, monthly average0.7 g/dtighter0.07 g/d (11 values, 7 below detection)—
Zinc, total recoverable, daily maximum9.07 g/dtighter0.24 g/d (11 values, 1 below detection)0.0265×
Zinc, total recoverable, daily maximum119.82 ug/Ltighter44.7 ug/L (11 values, 1 below detection)0.373×
Zinc, total recoverable, monthly average66.39 ug/Ltighter44.7 ug/L (11 values, 1 below detection)0.673×
Zinc, total recoverable, monthly average5.03 g/dtighter0.24 g/d (11 values, 1 below detection)0.0477×

How strict are these limits?

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

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