Clean Water Act discharge permit · NPDES MA0101923
ROCKLAND WASTEWATER TREATMENT FACILITY, Rockland, MA: NPDES MA0101923 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
ROCKLAND WASTEWATER TREATMENT FACILITY, held by ROCKLAND WWTP, holds NPDES permit MA0101923, which discharges to French Stream. EPA’s file records it issued May 9, 2006 and expiring June 30, 2011. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | ROCKLAND WASTEWATER TREATMENT FACILITY |
|---|---|
| Permittee as filed | ROCKLAND WWTP |
| NPDES ID | MA0101923 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 9, 2006 |
| Expiration date | June 30, 2011 |
| Address | Rockland, MA 02370 |
| Receiving water | French Stream |
| Subwatershed | Headwaters Indian Head River (HUC 010900020101) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 17Pollutants on file
- 17Under a numeric limit
- 12With a violation of any kind
- 12With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 3 | 87 | 87 | March 31, 2023 | 72% over the limit |
| Nitrogen, ammonia total [as N] | 15 | 23 | 23 | May 31, 2020 | 355% over the limit |
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 14 | 14 | July 31, 2021 | 94% over the limit |
| Phosphorus, total [as P] | 20 | 13 | 13 | June 30, 2013 | 200% over the limit |
| Copper, total [as Cu] | 2 | 9 | 9 | June 30, 2006 | 124% over the limit |
| Coliform, fecal general | 2 | 9 | 9 | June 30, 2006 | 6,650% over the limit |
| BOD, 5-day, percent removal | 1 | 6 | 6 | June 30, 2006 | 91% over the limit |
| Solids, suspended percent removal | 1 | 6 | 6 | June 30, 2006 | 92% over the limit |
| Solids, total suspended | 14 | 9 | 5 | May 31, 2020 | 34% over the limit |
| BOD, 5-day, 20 deg. C | 14 | 4 | 4 | June 30, 2013 | 21% over the limit |
| Chlorine, total residual | 4 | 2 | 2 | November 30, 2006 | 84,111% over the limit |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 1 | 1 | 1 | July 31, 2021 | 30% over the limit |
| pH | 2 | 0 | 0 | ||
| Solids, settleable | 2 | 0 | 0 | ||
| Aluminum, total [as Al] | 2 | 0 | 0 | ||
| Phosphorous, in total orthophosphate | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES MA0101923.
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MA0101923.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MA0101923 there.
Nearby on the register
- Discharge permits in Rockland
- Every permit record in Rockland, A to Z
- Discharge permits in Massachusetts
- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.