Clean Water Act discharge permit · NPDES RIR50Q053
COWESETT MARINA (SOUTH YARD), Warwick, RI: NPDES RIR50Q053 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 0Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
COWESETT MARINA (SOUTH YARD), held by Safe Harbor Marinas, holds NPDES permit RIR50Q053, which discharges to Greenwich Bay. EPA’s file records it issued August 1, 2019 and expiring May 2, 2024.
COWESETT MARINA (SOUTH YARD), Warwick, Rhode Island: Coverage under a general permit RIR50Q053, held by Safe Harbor Marinas; Industrial stormwater; Administratively continued (past its expiration date and still in force until reissued); issued August 1, 2019, term to May 2, 2024, by RIDEM; discharges to GREENWICH BAY.
- Zinc, total [as Zn]: 12 limits, 64 violations of any kind, 0 effluent exceedances.
- Aluminum, total [as Al]: 12 limits, 63 violations of any kind, 0 effluent exceedances.
- Iron, total [as Fe]: 12 limits, 62 violations of any kind, 0 effluent exceedances.
- Lead, total [as Pb]: 12 limits, 60 violations of any kind, 0 effluent exceedances.
- Nitrogen, total [as N]: 12 limits, 56 violations of any kind, 0 effluent exceedances.
- Solids, total suspended: 12 limits, 38 violations of any kind, 0 effluent exceedances.
- Oil & Grease: 12 limits, 36 violations of any kind, 0 effluent exceedances.
- Coliform, fecal general: 12 limits, 36 violations of any kind, 0 effluent exceedances.
- Copper, total [as Cu]: 0 limits, 2 violations of any kind, 0 effluent exceedances.
- February 19, 2026: Letter of Violation/ Warning Letter (State).
Rhode Island holds 370 Industrial stormwater coverages of this permit type in EPA’s file; 96 were issued before RIR50Q053. Safe Harbor Marinas holds 8 permits in Rhode Island.
Other permits held by Safe Harbor Marinas
- WICKFORD COVE MARINA, North Kingstown: RIR50Q025, issued August 1, 2019
- COVE HAVEN MARINA, Barrington: RIR50Q039, issued August 22, 2019
- COWESETT MARINA (NORTH YARD), Warwick: RIR50Q050, issued August 1, 2019
- GREENWICH BAY MARINA NORTH YARD, Warwick: RIR50Q051, issued December 9, 2020
- BREWER GREENWICH BAY MARINA - EAST YARD, Warwick: RIR50Q052, issued December 9, 2020
- SAFE HARBOR ISLAND PARK, Portsmouth: RIR50Q056, issued May 25, 2020
- SAFE HARBOR ALLEN HARBOR, North Kingstown: RIRNE0399, issued April 8, 2022
Coverages issued nearest RIR50Q053
- August 1, 2019: NEWPORT TRANSFER STATION AND HAULING FACILITY, Newport, RIR50P040, held by Waste Management of Rhode Island, Inc.
- August 1, 2019: MONDELEZ GLOBAL LLC - NORTH SMITHFIELD, RI, North Smithfield, RIR50P045, held by MONDELEZ GLOBAL LLC
- August 1, 2019: SAFE HARBOR COWESETT, Warwick, RIR50Q015, held by Safe Harbor Marinas Cowesett
- August 1, 2019: WICKFORD COVE MARINA, North Kingstown, RIR50Q025, held by Safe Harbor Marinas
- August 1, 2019: COWESETT MARINA (NORTH YARD), Warwick, RIR50Q050, held by Safe Harbor Marinas
- August 1, 2019: GENERAL DYNAMICS ELECTRIC BOAT CORPORATION, North Kingstown, RIR50R008, held by Electric Boat Corporation
- August 1, 2019: SENESCO MARINE, LLC, North Kingstown, RIR50R010, held by Senesco Marine, LLC
- August 1, 2019: SENESCO MARINE, LLC, Quonset Point, RIR50R016, held by Senesco Marine, LLC
- August 1, 2019: PEPSI BOTTLING GROUP, Cranston, RIR50U002, held by PEPSI BOTTLING GROUP, LLC
- August 1, 2019: MURDOCK WEBBING CO. INC., Central Falls, RIRND0003, held by Wayne Boisvert
COWESETT MARINA (SOUTH YARD) among its neighbors
EPA’s permit file holds 27 discharge permits in the Greenwich Bay subwatershed (HUC 010900040903), RIR50Q053 among them. Its county holds 62, 3 of them major permits; RIR50Q053 is a minor permit.
Other permits in the Greenwich Bay subwatershed (HUC 010900040903)
- AMTROL INC, West Warwick: RIR5AA007, minor permit, discharging to MASHAPAUG RIVER, permit term to May 2, 2024
- ANTAYA TECHNOLOGIES, Warwick: RIRNE0372, minor permit, permit term to August 4, 2026
- BAY MARINA INC, Warwick: RIR50Q003, minor permit, discharging to Warwick Cove, permit term to May 2, 2024
- BD WARWICK, Warwick: RIRNE0371, minor permit, permit term to August 2, 2026
- BREWER GREENWICH BAY MARINA - EAST YARD, Warwick: RIR50Q052, minor permit, discharging to GREENWICH BAY, permit term to May 2, 2024
- CITY OF WARWICK, Warwick: RIR040031, minor permit, permit term to December 19, 2008
- COWESETT MARINA (NORTH YARD), Warwick: RIR50Q050, minor permit, discharging to GREENWICH BAY, permit term to May 2, 2024
- EAST GREENWICH YACHT CLUB, East Greenwich: RIR50Q029, minor permit, discharging to GREENWICH COVE, permit term to May 2, 2024
- GREENWICH BAY MARINA NORTH YARD, Warwick: RIR50Q051, minor permit, discharging to GREENWICH BAY, permit term to May 2, 2024
- GREENWICH COVE MARINA, East Greenwich: RIR50Q028, minor permit, discharging to Greenwich Cove; Narragansett Bay, permit term to May 2, 2024
Identity
| Facility as filed | COWESETT MARINA (SOUTH YARD) |
|---|---|
| Permittee as filed | Safe Harbor Marinas |
| NPDES ID | RIR50Q053 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | August 1, 2019 |
| Expiration date | May 2, 2024 |
| Issuing agency | RIDEM |
| Address | Warwick, RI 02886 |
| Receiving water | GREENWICH BAY |
| Subwatershed | Greenwich Bay (HUC 010900040903) |
| Other EPA IDs (FRS) | RCRA handler RID987471869 |
Effluent limits and exceedances
- 9Pollutants on file
- 8Under a numeric limit
- 9With a violation of any kind
- 0With 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 |
|---|---|---|---|---|---|
| Zinc, total [as Zn] | 12 | 64 | 0 | ||
| Aluminum, total [as Al] | 12 | 63 | 0 | ||
| Iron, total [as Fe] | 12 | 62 | 0 | ||
| Lead, total [as Pb] | 12 | 60 | 0 | ||
| Nitrogen, total [as N] | 12 | 56 | 0 | ||
| Solids, total suspended | 12 | 38 | 0 | ||
| Oil & Grease | 12 | 36 | 0 | ||
| Coliform, fecal general | 12 | 36 | 0 | ||
| Copper, total [as Cu] | 0 | 2 | 0 |
EPA’s effluent violation file records no exceedance of a numeric limit for NPDES RIR50Q053.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES RIR50Q053.
Inspections
EPA’s inspection file holds no inspection for NPDES RIR50Q053.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
| Date | What EPA recorded | Agency |
|---|---|---|
| February 19, 2026 | Letter of Violation/ Warning Letter | State |
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.