Clean Water Act discharge permit · NPDES MAG580044
ROCKPORT W W T F, Rockport, MA: NPDES MAG580044 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 29Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
ROCKPORT W W T F, held by ROCKPORT WASTEWATER TREATMENT FACILITY, holds NPDES permit MAG580044, which discharges to Sandy Bay. EPA’s file records it issued December 1, 2021 and expiring November 30, 2026. 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 | ROCKPORT W W T F |
|---|---|
| Permittee as filed | ROCKPORT WASTEWATER TREATMENT FACILITY |
| NPDES ID | MAG580044 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 1, 2021 |
| Expiration date | November 30, 2026 |
| Address | Rockport, MA 01966 |
| Receiving water | SANDY BAY |
| Subwatershed | Essex Bay-Frontal Atlantic Ocean (HUC 010900010301) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 29Pollutants on file
- 29Under a numeric limit
- 23With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| pH | 3 | 16 | 14 | November 30, 2025 | |
| Flow, in conduit or thru treatment plant | 3 | 4 | 4 | March 31, 2026 | 42% over the limit |
| Chlorine, total residual | 2 | 3 | 3 | July 31, 2025 | 13% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 2 | 2 | April 30, 2024 | 13% over the limit |
| Solids, total suspended | 6 | 2 | 2 | April 30, 2024 | 101% over the limit |
| Enterococci | 2 | 2 | 2 | May 31, 2026 | 80% over the limit |
| Copper, total [as Cu] | 3 | 4 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 4 | 0 | ||
| Carbon, tot organic [TOC] | 2 | 4 | 0 | ||
| Cadmium, total [as Cd] | 2 | 4 | 0 | ||
| Lead, total [as Pb] | 2 | 4 | 0 | ||
| Nickel, total [as Ni] | 2 | 4 | 0 | ||
| Zinc, total [as Zn] | 2 | 4 | 0 | ||
| Perfluorooctanoic acid (PFOA) | 3 | 3 | 0 | ||
| Perfluoroheptanoic acid (PFHpA) | 3 | 3 | 0 | ||
| Perfluorononanoic acid (PFNA) | 3 | 3 | 0 | ||
| Perfluorodecanoic acid (PFDA) | 3 | 3 | 0 | ||
| Perfluorohexanesulfonic acid (PFHxS) | 3 | 3 | 0 | ||
| Perfluorooctanesulfonic acid (PFOS) | 3 | 3 | 0 | ||
| Temperature, water deg. centigrade | 1 | 2 | 0 | ||
| Salinity | 1 | 2 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 2 | 0 | ||
| LC50 Static 48Hr Acute Menidia | 1 | 2 | 0 | ||
| Nitrogen, total [as N] | 4 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 0 | 0 | ||
| Coliform, fecal general | 2 | 0 | 0 | ||
| BOD, 5-day, percent removal | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 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 MAG580044.
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, MAG580044.
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 MAG580044 there.
Nearby on the register
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- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.