Clean Water Act discharge permit · NPDES MA0101087

STOCKBRIDGE W W T P, Stockbridge, MA: NPDES MA0101087 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
13Pollutants under a numeric limit
5Pollutants with an effluent exceedance

STOCKBRIDGE W W T P, held by STOCKBRIDGE WWTP, holds NPDES permit MA0101087, which discharges to Housatonic River. EPA’s file records it issued September 15, 2004 and expiring September 30, 2009. 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	STOCKBRIDGE W W T P
Permittee as filed	STOCKBRIDGE WWTP
NPDES ID	MA0101087
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	September 15, 2004
Expiration date	September 30, 2009
Address	Stockbridge, MA 01262
Receiving water	HOUSATONIC RIVER
Receiving water impaired	303(D) Listed
Subwatershed	Konkapot Brook-Housatonic River (HUC 011000050107)
Program components on file	Biosolids, POTW
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

16Pollutants on file
13Under a numeric limit
16With a violation of any kind
5With 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
Phosphorus, total [as P]	2	16	7	April 30, 2020	60% over the limit
Solids, suspended percent removal	1	8	5	March 31, 2008	80% over the limit
E. coli, colony forming units [CFU]	0	5	3	August 31, 2012	82% over the limit
Solids, total suspended	6	26	2	September 30, 2011	83% over the limit
Coliform, fecal general	2	4	2	August 31, 2011	100% over the limit
BOD, 5-day, 20 deg. C	6	24	0
pH	2	8	0
Nitrogen, total [as N]	0	8	0
Nitrogen, ammonia total [as N]	0	8	0
Flow, in conduit or thru treatment plant	2	7	0
BOD, 5-day, percent removal	1	3	0
LC50 Static 48Hr Acute Ceriodaphnia dubia	1	3	0
Nitrogen, nitrite total [as N]	1	2	0
Nitrogen, nitrate total [as N]	1	2	0
Nitrogen, Kjeldahl, total [TKN] [water]	1	1	0
LC50 Static 48Hr Acute Pimephales promelas	1	1	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 MA0101087.

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 MA0101087 there.

Nearby on the register

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

This public-records page covers the Clean Water Act discharge permit NPDES MA0101087 held by STOCKBRIDGE WWTP for STOCKBRIDGE W W T P in Stockbridge, MA, which discharges to the Housatonic River and is administratively continued as a minor discharger. The page lists 5 pollutants under a numeric limit and 5 pollutants with an effluent exceedance, with the permit recorded as issued September 15, 2004 and expiring September 30, 2009, per EPA's file as loaded October 14, 2026.