Clean Water Act discharge permit · NPDES MAG640064

BELMONT RESERVOIR FILTER PLANT, Hinsdale, MA: NPDES MAG640064 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
0Pollutants with an effluent exceedance

BELMONT RESERVOIR FILTER PLANT holds NPDES permit MAG640064, which discharges to Belmont Reservoir Outlet Stream. EPA’s file records it issued March 1, 2004 and expiring November 30, 2005. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filed	BELMONT RESERVOIR FILTER PLANT
Permittee as filed	BELMONT RESERVOIR FILTER PLANT
NPDES ID	MAG640064
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
Issued	March 1, 2004
Expiration date	November 30, 2005
Address	Hinsdale, MA 01235
Receiving water	BELMONT RESERVOIR OUTLET STREAM
Subwatershed	East Branch Housatonic River (HUC 011000050103)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

6Pollutants on file
6Under a numeric limit
6With 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
pH	2	52
Solids, total suspended	2	52
Flow, in conduit or thru treatment plant	1	43
Chlorine, total residual	2	18
LC50 Static 1Hr Chronic Ceriodaphnia Dubia	1	2
NOEL Static 4Day Chronic Ceriodaphnia dubia	1	2

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES MAG640064.

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 MAG640064.

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 MAG640064 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

This page covers NPDES permit MAG640064 for the BELMONT RESERVOIR FILTER PLANT in Hinsdale, MA, which discharges to the Belmont Reservoir Outlet Stream in the East Branch Housatonic River watershed (HUC 011000050103). The permit is listed as administratively continued, with a minor discharger class, an issue date of March 1, 2004, and an expiration date of November 30, 2005. The page lists 6 pollutants on file, 6 under a numeric limit, and 6 with an effluent exceedance.