NPDES permit MA0000469 · Major NON-POTW · effective, expires 2027-02-28 · EPA's file as of 2026-09-19
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Last period with anything received: 2026-07-31.
Reports are due about 15 days after each monitoring period ends (the most common figure among MA permits in EPA's filings — check your permit).
| Outfall | Parameter | Statistic | Limit | Months |
|---|---|---|---|---|
| 001 | Temperature, water deg. centigrade | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Temperature, water deg. fahrenheit | MO AVG | report only | all year |
| 001 | Temperature, water deg. fahrenheit | DAILY MX | <= 90 deg F | all year |
| 001 | Oxygen, dissolved [DO] | MINIMUM | >= 5 mg/L | Apr, May, Jun, Jul, Aug, Sep |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 286 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 400 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | BOD, 5-day, 20 deg. C | MO AVG | <= 150 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 400 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 700 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | BOD, 5-day, 20 deg. C | DAILY MX | <= 200 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 001 | pH | MINIMUM | >= 6 SU | all year |
| 001 | pH | MAXIMUM | <= 8.3 SU | all year |
| 001 | pH | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Solids, total suspended | MO AVG | <= 400 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Solids, total suspended | MO AVG | <= 700 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Solids, total suspended | MO AVG | <= 150 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Solids, total suspended | DAILY MX | <= 700 lb/d | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Solids, total suspended | DAILY MX | <= 900 lb/d | Jan, Feb, Mar, Apr, Nov, Dec |
| 001 | Solids, total suspended | DAILY MX | <= 200 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] | MO AVG | report only | all year |
| 001 | Nitrogen, total [as N] | DAILY MX | report only | all year |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Nitrogen, ammonia total [as N] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 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 | <= .19 mg/L | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Phosphorus, total [as P] | MO AVG | report only | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Phosphorus, total [as P] | DAILY MX | report only | Apr, May, Jun, Jul, Aug, Sep, Oct |
| 001 | Hardness, total [as CaCO3] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Hardness, total [as CaCO3] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Cadmium, total [as Cd] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Cadmium, total [as Cd] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Copper, total [as Cu] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Copper, total [as Cu] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Iron, total [as Fe] | DAILY MX | report only | all year |
| 001 | Lead, total [as Pb] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Lead, total [as Pb] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Nickel, total [as Ni] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Nickel, total [as Ni] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Zinc, total [as Zn] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Zinc, total [as Zn] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Aluminum, total [as Al] | MO AVG | <= .087 mg/L | all year |
| 001 | Aluminum, total [as Al] | DAILY MX | <= 1.57 mg/L | all year |
| 001 | Aluminum, total [as Al] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Aluminum, total [as Al] | MO AVG | report only | all year |
| 001 | Aluminum, total [as Al] | DAILY MX | report only | all year |
| 001 | Aluminum, total [as Al] | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | <= .847 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | <= 1.4 MGD | all year |
| 001 | Flow, in conduit or thru treatment plant | MO AVG | report only | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Flow, in conduit or thru treatment plant | DAILY MX | report only | May, Jun, Jul, Aug, Sep, Oct |
| 001 | Chlorine, total residual | MO AVG | <= 30 ug/L | all year |
| 001 | Chlorine, total residual | DAILY MX | report only | all year |
| 001 | Chlorine, total residual | DAILY MX | report only | Jan, Apr, Jul, Oct |
| 001 | LC50 Static 48Hr Acute Ceriodaphnia dubia | MINIMUM | >= 100 % | Jul |
| 001 | NOEL Static 7Day Chronic Ceriodaphnia dubia | MINIMUM | >= 32 % | Jan, Apr, Jul, Oct |
| 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