Clean Water Act discharge permit · NPDES SD0021792

WOONSOCKET, CITY OF, Woonsocket, City Of, SD: NPDES SD0021792 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
9Pollutants under a numeric limit
3Pollutants with an effluent exceedance

WOONSOCKET, CITY OF, held by Woonsocket, City of, holds NPDES permit SD0021792, which discharges to County Ditch To Long Lake. EPA’s file records it issued December 23, 2003 and expiring December 31, 2008. 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, CITY OF
Permittee as filed	Woonsocket, City of
NPDES ID	SD0021792
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Publicly owned treatment works
Program	Publicly owned treatment works
Issued	December 23, 2003
Expiration date	December 31, 2008
Issuing agency	SDDENR
Address	Woonsocket, City Of, SD 57385
Receiving water	COUNTY DITCH TO LONG LAKE
Subwatershed	McCoy Lake (HUC 101600110101)
NAICS	221320 – Sewage Treatment Facilities
SIC	4952 – Sewerage Systems

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

10Pollutants on file
9Under a numeric limit
10With a violation of any kind
3With 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
Solids, total suspended	2	126	34	May 31, 2009	650% over the limit
BOD, 5-day, 20 deg. C	2	105	13	May 31, 2009	127% over the limit
pH	2	104	9	May 31, 2009
Flow rate	2	101	0
Temperature, water deg. centigrade	2	100	0
Nitrogen, ammonia total [as N]	2	98	0
Coliform, fecal general	2	72	0
Chlorine, total residual	0	26	0
Flow	1	14	0
Duration of discharge	1	14	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 SD0021792.

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

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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 SD0021792 there.

Nearby on the register

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

This public-records page covers the NPDES discharge permit SD0021792 held by Woonsocket, City of, a publicly owned treatment works that discharges to County Ditch To Long Lake within the McCoy Lake subwatershed (HUC 101600110101). The permit is administratively continued, classed as a minor discharger, and lists 3 pollutants under a numeric limit and 3 pollutants with an effluent exceedance.