NPDES permit MA0000671 · Major NON-POTW · administratively continued, expires 2026-08-31 · EPA's file as of 2026-09-19
Check this month's numbers before you fileThis permit expired on 2026-08-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.
Last period with anything received: 2026-07-31. Most often over: Phosphorus, total [as P] (2).
Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Temperature, water deg. centigrade | DAILY MX | report only | all year |
| 001 | Color [PT-CO units] | MO AVG | report only | all year |
| 001 | Color [PT-CO units] | DAILY MX | report only | all year |
| 001 | Oxygen, dissolved [DO] | DAILY MN | >= 5 mg/L | all year |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 600 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 1200 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 900 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 1800 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | pH | MINIMUM | >= 6.5 SU | all year |
| 001 | pH | MAXIMUM | <= 8.3 SU | all year |
| 001 | pH | DAILY MX | report only | all year |
| 001 | Solids, total suspended | MO AVG | <= 1200 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Solids, total suspended | MO AVG | <= 864 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Solids, total suspended | DAILY MX | <= 1800 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Solids, total suspended | DAILY MX | <= 1260 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Nitrogen, total [as N] | MO AVG | report only | all year |
| 001 | Nitrogen, total [as N] | DAILY MX | report only | all year |
| 001 | Nitrogen, total [as N] | ROLL AVG | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | report only | all year |
| 001 | Nitrogen, Kjeldahl, total [as N] | MO AVG | report only | all year |
| 001 | Nitrogen, Kjeldahl, total [as N] | DAILY MX | report only | all year |
| 001 | Nitrite + Nitrate total [as N] | MO AVG | report only | all year |
| 001 | Nitrite + Nitrate total [as N] | DAILY MX | report only | all year |
| 001 | Phosphorus, total [as P] | MO AVG | <= 1 mg/L | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Phosphorus, total [as P] | MO AVG | <= .2 mg/L | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Hardness, total [as CaCO3] | DAILY MX | report only | all year |
| 001 | Hardness, total [as CaCO3] | DAILY MX | report only | all year |
| 001 | Cadmium, total [as Cd] | DAILY MX | report only | all year |
| 001 | Cadmium, total [as Cd] | DAILY MX | report only | all year |
| 001 | Copper, total [as Cu] | MO AVG | <= 16 ug/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= 21 ug/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | report only | all year |
| 001 | Copper, total [as Cu] | DAILY MX | report only | all year |
| 001 | Lead, total [as Pb] | DAILY MX | report only | all year |
| 001 | Lead, total [as Pb] | DAILY MX | report only | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | report only | all year |
| 001 | Nickel, total [as Ni] | DAILY MX | report only | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | report only | all year |
| 001 | Zinc, total [as Zn] | DAILY MX | report only | all year |
| 001 | Aluminum, total [as Al] | MO AVG | <= .17 mg/L | all year |
| 001 | Aluminum, total [as Al] | DAILY MX | report only | all year |
| 001 | Aluminum, total [as Al] | DAILY MX | <= 1.35 mg/L | all year |
| 001 | Aluminum, total [as Al] | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | all year |
| 001 | Flow, in conduit or thru treatment plant | ROLL AVG | <= 4 MGD | all year |
| 001 | Chlorine, total residual | MO AVG | <= 19 ug/L | all year |
| 001 | Chlorine, total residual | DAILY MX | <= 30 ug/L | all year |
| 001 | NOEC Static Renewal 7Day Chronic Ceriodaphnia dubia | DAILY MN | >= 59 % | all year |
| 001 | LC50 Static 48Hr Acute Ceriodaphnia dubia | DAILY MN | >= 100 % | all year |
| PFAS | Perfluorooctanoic acid (PFOA) | DAILY MX | report only | all year |
| PFAS | Perfluoroheptanoic acid (PFHpA) | DAILY MX | report only | all year |
| PFAS | Perfluorononanoic acid (PFNA) | DAILY MX | report only | all year |
| PFAS | Perfluorodecanoic acid (PFDA) | DAILY MX | report only | all year |
| PFAS | Perfluorohexanesulfonic acid (PFHxS) | DAILY MX | report only | all year |
| PFAS | Perfluorooctanesulfonic acid (PFOS) | DAILY MX | report only | all year |
Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states