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Sewage treatment plant, major discharger, New Bedford, Massachusetts. NPDES permit MA0100781 expired Nov 30, 2013; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 8.5 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Solids, total suspended | monthly average | ≤ 7511 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 11266 lb/d | all year | 001 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 001 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | Apr–Oct | 001 |
| Nitrogen, Kjeldahl, total [as N] | average | report only (lb/d) | Jan, Feb, Mar, Nov, Dec | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (lb/d) | Apr–Oct | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (lb/d) | Jan, Feb, Mar, Nov, Dec | 001 |
| Copper, total [as Cu] | monthly average | ≤ 33.6 ug/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ 52 ug/L | all year | 001 |
| Coliform, fecal - % samples exceeding limit | event total | ≤ 10 % | all year | 001 |
| Polychlorinated biphenyls [PCBs] | minimum | report only (ug/L) | Apr, Sep | 001 |
| Flow, in conduit or thru treatment plant | rolling average | ≤ 30 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | ≤ 67.5 ug/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 117 ug/L | all year | 001 |
| Enterococci | geometric mean | ≤ 35 CFU/100mL | all year | 001 |
| Enterococci | daily maximum | ≤ 276 CFU/100mL | all year | 001 |
| Coliform, fecal general | monthly geometric mean | ≤ 14 CFU/100mL | all year | 001 |
| Coliform, fecal general | daily maximum | ≤ 400 CFU/100mL | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 40 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 6259 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 10014 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | all year | 001 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 001 |
| Carbonaceous oxygen demand, % removal | monthly average minimum | ≥ 85 % | all year | 001 |
| LC50 Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | monthly average minimum | ≥ 100 % | Mar, Jun, Sep, Dec | 001 |
| LC50 Static 48Hr Acute Menidia | monthly average minimum | ≥ 100 % | Mar, Jun, Sep, Dec | 001 |
| NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulata | monthly average minimum | ≥ 12.5 % | Mar, Jun, Sep, Dec | 001 |
| Noel Statre 7Day Chronic Menidia | monthly average minimum | ≥ 12.5 % | Mar, Jun, Sep, Dec | 001 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 8.5 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 002 |
| Solids, total suspended | monthly average | ≤ 7511 lb/d | all year | 002 |
| Solids, total suspended | weekly average | ≤ 11266 lb/d | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | monthly average | report only (lb/d) | all year | 002 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (lb/d) | Apr–Oct | 002 |
| Nitrogen, Kjeldahl, total [as N] | average | report only (lb/d) | Jan, Feb, Mar, Nov, Dec | 002 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (lb/d) | Apr–Oct | 002 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (lb/d) | Jan, Feb, Mar, Nov, Dec | 002 |
| Copper, total [as Cu] | monthly average | ≤ 33.6 ug/L | all year | 002 |
| Copper, total [as Cu] | daily maximum | ≤ 52 ug/L | all year | 002 |
| Coliform, fecal - % samples exceeding limit | event total | ≤ 10 % | all year | 002 |
| Polychlorinated biphenyls [PCBs] | minimum | report only (ug/L) | Apr, Sep | 002 |
| Flow, in conduit or thru treatment plant | 12-month average | ≤ 30 MGD | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | monthly average | ≤ 67.5 ug/L | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ 117 ug/L | all year | 002 |
| Enterococci | geometric mean | ≤ 35 CFU/100mL | all year | 002 |
| Enterococci | daily maximum | ≤ 276 CFU/100mL | all year | 002 |
| Coliform, fecal general | monthly geometric mean | ≤ 14 CFU/100mL | all year | 002 |
| Coliform, fecal general | daily maximum | ≤ 400 CFU/100mL | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 40 mg/L | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 6259 lb/d | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 10014 lb/d | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | 002 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (lb/d) | all year | 002 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
| Carbonaceous oxygen demand, % removal | monthly average minimum | ≥ 85 % | all year | 002 |
| LC50 Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | daily minimum | ≥ 100 % | Mar, Jun, Sep, Dec | 002 |
| LC50 Static 48Hr Acute Menidia | daily minimum | ≥ 100 % | Mar, Jun, Sep, Dec | 002 |
| NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulata | daily minimum | ≥ 12.5 % | Mar, Jun, Sep, Dec | 002 |
| Noel Statre 7Day Chronic Menidia | daily minimum | ≥ 12.5 % | Mar, Jun, Sep, Dec | 002 |
Cited limits by parameter: Massachusetts's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
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