Clean Water Act discharge permit · NPDES RI0001627

WOONSOCKET WATER TREATMENT PLANT, Woonsocket, RI: NPDES RI0001627 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
9Pollutants under a numeric limit
4Pollutants with an effluent exceedance

WOONSOCKET WATER TREATMENT PLANT, held by WOONSOCKET CITY HALL, holds NPDES permit RI0001627, which discharges to Blackstone River. EPA’s file records it issued September 13, 2006 and expiring October 31, 2011. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	WOONSOCKET WATER TREATMENT PLANT
Permittee as filed	WOONSOCKET CITY HALL
NPDES ID	RI0001627
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	September 13, 2006
Expiration date	October 31, 2011
Address	Woonsocket, RI 02895
Receiving water	BLACKSTONE RIVER
Receiving water impaired	303(D) Listed
Subwatershed	Peters River-Blackstone River (HUC 010900030208)
SIC	4941 – Water Supply

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

9Pollutants on file
9Under a numeric limit
9With a violation of any kind
4With 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	18	734	734	June 30, 2021
Solids, total suspended	30	41	35	July 31, 2021	175% over the limit
Aluminum, total [as Al]	6	6	6	February 28, 2021	182% over the limit
Flow, in conduit or thru treatment plant	6	10	3	January 31, 2018	35% over the limit
Chlorine, total residual	6	12	0
Iron, total [as Fe]	6	4	0
Copper, total [as Cu]	12	2	0
Lead, total [as Pb]	12	2	0
Turbidity	6	2	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 RI0001627.

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.

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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 RI0001627 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

This public-records page covers Clean Water Act discharge permit NPDES RI0001627 for the Woonsocket Water Treatment Plant in Woonsocket, RI, held by Woonsocket City Hall, which discharges to the Blackstone River within the Peters River-Blackstone River subwatershed (HUC 010900030208). The page lists the permit as administratively continued and classed as a Minor discharger, with 4 pollutants under a numeric limit and 4 pollutants with an effluent exceedance.