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Sewage treatment plant, Montgomery Twp, New Jersey. NPDES permit NJ0069523 expired Sep 30, 2026; its limits still apply. Last 12 months: over a limit once (last February 2026), 12 required values missing, 3 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| February 2026 | BOD, 5-day, 20 deg. C, weekly average | 9.2 mg/L | ≤ 6 mg/L | 53% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. centigrade | instantaneous minimum | report only (deg C) | all year |
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year |
| Temperature, water deg. centigrade | instantaneous maximum | report only (deg C) | all year |
| Oxygen, dissolved [DO] | instantaneous minimum | report only (mg/L) | all year |
| Oxygen, dissolved [DO] | minimum weekly average | ≥ 6 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 4 mg/L | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 6 mg/L | all year |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 4.33 kg/d | all year |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 6.5 kg/d | all year |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | weekly average | report only (mg/L) | all year |
| BOD, 5-day, 20 deg. C | monthly average minimum | ≥ 85 % | all year |
| pH | instantaneous minimum | ≥ 6 SU | all year |
| pH | instantaneous maximum | ≤ 8 SU | all year |
| Alkalinity, total [as CaCO3] | monthly average | report only (mg/L) | all year |
| Alkalinity, total [as CaCO3] | weekly average | report only (mg/L) | all year |
| Solids, total suspended | monthly average | ≤ 4 mg/L | all year |
| Solids, total suspended | weekly average | ≤ 6 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 4.33 kg/d | all year |
| Solids, total suspended | weekly average | ≤ 6.5 kg/d | all year |
| Solids, total suspended | monthly average | report only (mg/L) | all year |
| Solids, total suspended | weekly average | report only (mg/L) | all year |
| Solids, total suspended | monthly average minimum | ≥ 85 % | all year |
| Oil & Grease | monthly average | ≤ 10 mg/L | all year |
| Oil & Grease | instantaneous maximum | ≤ 15 mg/L | all year |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1 mg/L | May–Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | monthly average | report only (kg/d) | May–Oct |
| Nitrogen, ammonia total [as N] | monthly average | report only (kg/d) | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 1.08 kg/d | May–Oct |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 9.74 kg/d | Jan, Feb, Mar, Apr, Nov, Dec |
| Nitrogen, nitrate total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, nitrate total [as N] | daily maximum | report only (mg/L) | all year |
| Nitrogen, nitrate total [as N] | monthly average | report only (kg/d) | all year |
| Nitrogen, nitrate total [as N] | daily maximum | report only (kg/d) | all year |
| Phosphorus, total [as P] | monthly average | ≤ .42 mg/L | May–Oct |
| Phosphorus, total [as P] | monthly average | ≤ 1.03 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| Phosphorus, total [as P] | weekly average | report only (mg/L) | May–Oct |
| Phosphorus, total [as P] | weekly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec |
| Phosphorus, total [as P] | monthly average | report only (kg/d) | May–Oct |
| Phosphorus, total [as P] | monthly average | report only (kg/d) | Jan, Feb, Mar, Apr, Nov, Dec |
| Phosphorus, total [as P] | weekly average | report only (kg/d) | May–Oct |
| Phosphorus, total [as P] | weekly average | report only (kg/d) | Jan, Feb, Mar, Apr, Nov, Dec |
| Arsenic, total recoverable | monthly average | report only (ug/L) | all year |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year |
| Arsenic, total recoverable | monthly average | report only (g/d) | all year |
| Arsenic, total recoverable | daily maximum | report only (g/d) | all year |
| Copper, total [as Cu] | monthly average | report only (ug/L) | all year |
| Copper, total [as Cu] | daily maximum | report only (ug/L) | all year |
| Copper, total [as Cu] | monthly average | report only (g/d) | all year |
| Copper, total [as Cu] | daily maximum | report only (g/d) | all year |
| Nickel, total recoverable | monthly average | report only (ug/L) | all year |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year |
| Nickel, total recoverable | monthly average | report only (g/d) | all year |
| Nickel, total recoverable | daily maximum | report only (g/d) | all year |
| Zinc, total recoverable | monthly average | report only (ug/L) | all year |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year |
| Zinc, total recoverable | monthly average | report only (g/d) | all year |
| Zinc, total recoverable | daily maximum | report only (g/d) | all year |
| Lead, total recoverable | monthly average | report only (ug/L) | all year |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year |
| Lead, total recoverable | monthly average | report only (g/d) | all year |
| Lead, total recoverable | daily maximum | report only (g/d) | all year |
| Di[2-ethylhexyl] phthalate [DEHP] | monthly average | report only (ug/L) | all year |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | report only (ug/L) | all year |
| Di[2-ethylhexyl] phthalate [DEHP] | monthly average | report only (g/d) | all year |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | report only (g/d) | all year |
| Flow, in conduit or thru treatment plant | individual rolling average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year |
| E. coli | instantaneous maximum | report only (#/100mL) | all year |
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | instantaneous minimum | ≥ 50 % | all year |
Cited limits by parameter: New Jersey's rules and the federal ones.
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