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Clean Water Act discharge permit · NPDES RI0100234

WARWICK WASTEWATER TREATMENT FACILITY, Warwick, RI: NPDES RI0100234 discharge permit, effluent exceedances, inspections, penalties

WARWICK WASTEWATER TREATMENT FACILITY, held by WARWICK SEWER AUTHORITY, holds NPDES permit RI0100234, which discharges to Pawtuxet River. EPA’s file records it issued September 30, 2008 and expiring November 30, 2013. 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 filedWARWICK WASTEWATER TREATMENT FACILITY
Permittee as filedWARWICK SEWER AUTHORITY
NPDES IDRI0100234
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedSeptember 30, 2008
Expiration dateNovember 30, 2013
AddressWarwick, RI 02886
Receiving waterPAWTUXET RIVER
Receiving water impaired303(D) Listed
SubwatershedPawtuxet River (HUC 010900040609)
Program components on filePOTW, Pretreatment
NAICS221320 – Sewage Treatment Facilities
SIC4952 – Sewerage Systems
Other EPA IDs (FRS)RCRA handler RID987487295; ICIS-AIR source RI0000004400300808

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Coliform, fecal general33636May 31, 20185,999,900% over the limit
Solids, total suspended303127September 30, 20211,820% over the limit
Nitrogen, total [as N]127426August 31, 2025301% over the limit
BOD, carbonaceous [5 day, 20 C]304922September 30, 20161,193% over the limit
Phosphorus, total [as P]152421January 31, 2025870% over the limit
Nitrogen, ammonia total [as N]91313June 30, 20101,350% over the limit
Oxygen, dissolved [DO]198August 31, 202377% over the limit
Chlorine, total residual277November 30, 20101,220% over the limit
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia164December 31, 202588% over the limit
Aluminum, total [as Al]064May 31, 202475% over the limit
Zinc, total [as Zn]4113January 31, 200637% over the limit
BOD, carb-5 day, 20 deg C, percent removal173June 30, 2010333% over the limit
LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia153December 31, 2025100% over the limit
Flow, in conduit or thru treatment plant233April 30, 200417% over the limit
Solids, suspended percent removal122May 31, 2010160% over the limit
Enterococci022January 31, 202422% over the limit
Lead, total [as Pb]471May 31, 20104% over the limit
Cyanide, total [as CN]831December 31, 201133% over the limit
LC50 Static 48Hr Acute Pimephales promelas131September 30, 2012100% over the limit
pH211July 31, 2009
BOD, 5-day, 20 deg. C011January 31, 200422% over the limit
Cyanide, free [amenable to chlorination]10180
Cadmium, total [as Cd]480
Copper, total [as Cu]480
Nitrogen, Kjeldahl, total [as N]440
Nickel, total [as Ni]020
Phosphorus, ortho010
Nitrogen, nitrite total [as N]400
Nitrogen, nitrate total [as N]400
Solids, settleable200
Phosphate, ortho [as P]200

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

DateWhat EPA recordedAgency
September 13, 2022WW SSO - Discharge to WatersST6
September 12, 2022WW SSO - Discharge to WatersST6
November 21, 2018WW SSO - Discharge to WatersST6
August 26, 2018WW SSO - Discharge to WatersST6

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 RI0100234 there.

Nearby on the register

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

What this page shows

This public-records page covers NPDES permit RI0100234 for the Warwick Wastewater Treatment Facility in Warwick, RI, held by the Warwick Sewer Authority and discharging to the Pawtuxet River, with a status of administratively continued. The page lists a Major Discharger class, 26 pollutants under a numeric limit, and 21 pollutants with an effluent exceedance.