NPDES permit MA0040321 · Minor NON-POTW · expired, expires 2026-03-31 · EPA's file as of 2026-09-19
Check this month's numbers before you fileThis permit expired on 2026-03-31 and is expired: its last limits keep applying until a new permit is issued, and EPA still expects the reports.
Last period with anything received: 2026-08-31.
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 | Flow rate | MO AVG | <= 20000 gal/d | all year |
| 001 | Flow rate | DAILY MX | <= 30000 gal/d | all year |
| 001 | Oxygen, dissolved [DO] | MINIMUM | >= 5 mg/L | all year |
| 001 | pH | MINIMUM | >= 6.5 SU | all year |
| 001 | pH | MAXIMUM | <= 8.3 SU | all year |
| 001 | Solids, total suspended | MO AVG | <= 30 mg/L | all year |
| 001 | Solids, total suspended | DAILY MX | <= 45 mg/L | all year |
| 001 | Copper, total [as Cu] | MO AVG | <= 52 ug/L | all year |
| 001 | Copper, total [as Cu] | DAILY MX | <= 73 ug/L | all year |
| 001 | Chlorine, total residual | MO AVG | <= .22 mg/L | all year |
| 001 | Chlorine, total residual | DAILY MX | <= .27 mg/L | 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