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Paper Mills, major discharger, Dalton, Massachusetts. NPDES permit MA0000671 expired Aug 31, 2026; its limits still apply. Last 12 months: over a limit 3 times (last August 2026), 1 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| June 2026 | Phosphorus, total [as P], monthly average | .43 mg/L | ≤ .2 mg/L | 115% |
| July 2026 | Phosphorus, total [as P], monthly average | .26 mg/L | ≤ .2 mg/L | 30% |
| August 2026 | Phosphorus, total [as P], monthly average | .4 mg/L | ≤ .2 mg/L | 100% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| Color [PT-CO units] | monthly average | report only (col unit (pc)) | all year | 001 |
| Color [PT-CO units] | daily maximum | report only (col unit (pc)) | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 600 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 1200 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 900 lb/d | May–Oct | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 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 maximum | report only (SU) | all year | 001 |
| Solids, total suspended | monthly average | ≤ 1200 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, total suspended | monthly average | ≤ 864 lb/d | May–Oct | 001 |
| Solids, total suspended | daily maximum | ≤ 1800 lb/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Solids, total suspended | daily maximum | ≤ 1260 lb/d | May–Oct | 001 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | rolling average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, Kjeldahl, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Phosphorus, total [as P] | monthly average | ≤ .2 mg/L | May–Oct | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | May–Oct | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Hardness, total [as CaCO3] | daily maximum | report only (mg/L) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | monthly average | ≤ 16 ug/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ 21 ug/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Aluminum, total [as Al] | monthly average | ≤ .17 mg/L | all year | 001 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | all year | 001 |
| Aluminum, total [as Al] | daily maximum | ≤ 1.35 mg/L | all year | 001 |
| Aluminum, total [as Al] | daily maximum | report only (mg/L) | 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 |
| Flow, in conduit or thru treatment plant | rolling average | ≤ 4 MGD | all year | 001 |
| Chlorine, total residual | monthly average | ≤ 19 ug/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ 30 ug/L | all year | 001 |
| NOEC Static Renewal 7Day Chronic Ceriodaphnia dubia | daily minimum | ≥ 59 % | all year | 001 |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | daily minimum | ≥ 100 % | all year | 001 |
| Perfluorooctanoic acid (PFOA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluoroheptanoic acid (PFHpA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorononanoic acid (PFNA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorodecanoic acid (PFDA) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorohexanesulfonic acid (PFHxS) | daily maximum | report only (ng/L) | all year | PFAS |
| Perfluorooctanesulfonic acid (PFOS) | daily maximum | report only (ng/L) | all year | PFAS |
Cited limits by parameter: Massachusetts's rules and the federal ones.
Same industry: the 6 Paper and Allied Products permits in Massachusetts.
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On EPA ECHO: Facility report · DMR history
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