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Hatch Mott Macdonald

Sewage treatment plant, major discharger, West Caldwell Twp, New Jersey. NPDES permit NJ0020427, in force until Sep 30, 2028. Last 12 months: over a limit 15 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 26 days after each period: form A monthly (49 values)
Renewal application due
Apr 3, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
32 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 15 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], monthly average12 mg/L≤ 8 mg/L50%
October 2025BOD, carbonaceous [5 day, 20 C], weekly average17 mg/L≤ 12 mg/L42%
October 2025IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia, minimum57.3 %≥ 61 %6%
October 2025Nitrogen, ammonia total [as N], monthly average2.9 mg/L≤ 2 mg/L45%
October 2025Nitrogen, ammonia total [as N], weekly average7.6 mg/L≤ 3 mg/L153%
October 2025Nitrogen, ammonia total [as N], weekly average77.4 kg/d≤ 51 kg/d52%
October 2025Phosphorus, total [as P], monthly average1.91 mg/L≤ .76 mg/L151%
November 2025BOD, carbonaceous [5 day, 20 C], monthly average12 mg/L≤ 8 mg/L50%
November 2025BOD, carbonaceous [5 day, 20 C], monthly average141 kg/d≤ 136 kg/d4%
November 2025BOD, carbonaceous [5 day, 20 C], weekly average14 mg/L≤ 12 mg/L17%
February 2026Nitrogen, nitrate total [as N], daily maximum22.1 mg/L≤ 18.4 mg/L20%
April 2026Phosphorus, total [as P], monthly average.82 mg/L≤ .76 mg/L8%
May 2026Oxygen, dissolved [DO], minimum weekly average5.6 mg/L≥ 6 mg/L7%
May 2026Phosphorus, total [as P], monthly average.85 mg/L≤ .76 mg/L12%
August 2026Phosphorus, total [as P], monthly average.87 mg/L≤ .76 mg/L14%

Limits in force (53)

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]minimum weekly average≥ 6 mg/Lall 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≤ 510 kg/dall year
Solids, total suspendedweekly average≤ 770 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≤ 2 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 4.5 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 3 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 7 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 34 kg/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 76.6 kg/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 51 kg/dMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 119.2 kg/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrate total [as N]daily maximum≤ 18.4 mg/Lall year
Nitrogen, nitrate total [as N]monthly averagereport only (kg/d)all year
Nitrogen, nitrate total [as N]daily maximum≤ 314.2 kg/dall year
Phosphorus, total [as P]monthly average≤ .76 mg/Lall year
Phosphorus, total [as P]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (kg/d)all year
Phosphorus, total [as P]weekly averagereport only (kg/d)all year
Copper, total recoverablemonthly average≤ 41.9 ug/Lall year
Copper, total recoverabledaily maximum≤ 68.9 ug/Lall year
Copper, total recoverablemonthly average≤ 715 g/dall year
Copper, total recoverabledaily maximum≤ 1174.6 g/dall year
Flow, in conduit or thru treatment plantindividual rolling averagereport only (MGD)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≤ 8 mg/Lall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 12 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 136 kg/dall year
BOD, carbonaceous [5 day, 20 C]weekly average≤ 204 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≥ 61 %all year

How strict are these limits?

Cited limits by parameter: New Jersey'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/NJ0020427 · MCP: https://passage-data.com/mcp