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Montgomery TWP

Sewage treatment plant, Montgomery Twp, New Jersey. NPDES permit NJ0022390 expired Jun 30, 2024; its limits still apply. Last 12 months: over a limit 3 times (last January 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 26 days after each period: form A monthly (46 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 14 required values missing, 3 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, weekly average12 mg/L≤ 7 mg/L71%
October 2025Nitrogen, ammonia total [as N], weekly average3 mg/L≤ 1.5 mg/L100%
January 2026Phosphorus, total [as P], weekly average1.1 mg/L≤ 1 mg/L10%

Limits in force (54)

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]instantaneous minimum≥ 4 mg/Lall year
Oxygen, dissolved [DO]daily average minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 5 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 7 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 9.46 kg/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 13.2 kg/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly average minimum≥ 85 %all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHminimumreport only (SU)all year
pHmaximumreport only (SU)all year
Solids, total suspendedmonthly average≤ 20 mg/Lall year
Solids, total suspendedweekly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 37.8 kg/dall year
Solids, total suspendedweekly average≤ 56.7 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 & Greasedaily maximum≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 12 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 1.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 16 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.9 kg/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 22.71 kg/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 2.84 kg/dMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 30.28 kg/dJan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]monthly average≤ .42 mg/LMay–Oct
Phosphorus, total [as P]monthly 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]weekly average≤ 1 mg/LJan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]monthly averagereport only (kg/d)May–Oct
Phosphorus, total [as P]monthly averagereport only (kg/d)Jan, Feb, Mar, Apr, Nov, Dec
Phosphorus, total [as P]weekly averagereport only (kg/d)May–Oct
Phosphorus, total [as P]weekly averagereport only (kg/d)Jan, Feb, Mar, Apr, Nov, Dec
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
Nitrogen, nitrate total [as NO3]monthly averagereport only (mg/L)all year
Nitrogen, nitrate total [as NO3]daily maximumreport only (mg/L)all year
Nitrogen, nitrate total [as NO3]monthly averagereport only (kg/d)all year
Nitrogen, nitrate total [as NO3]daily maximumreport only (kg/d)all year
IC25 Static Renewal 7 Day Chronic Pimephalesminimum≥ 61 %all year

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NJ0022390 · MCP: https://passage-data.com/mcp