Clean Water Act discharge permit · NPDES MAL100510

HOOSAC WPCF, Williamstown, MA: NPDES MAL100510 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

HOOSAC WPCF holds NPDES permit MAL100510. EPA’s file records it issued January 1, 2021 and expiring December 31, 2025.

HOOSAC WPCF, Williamstown, Massachusetts: Associated permit record MAL100510; Biosolids; Administratively continued (past its expiration date and still in force until reissued); issued January 1, 2021, term to December 31, 2025.

Massachusetts holds 107 Biosolids coverages of this permit type in EPA’s file; 0 were issued before MAL100510. HOOSAC WPCF holds 2 permits in Massachusetts.

Other permits held by HOOSAC WPCF

HOOSAC W P C F, Williamstown: MA0100510, issued February 22, 2013

Coverages issued nearest MAL100510

January 1, 2021: WEBSTER W W T F, Webster, MAL100439
January 1, 2021: GREATER LAWRENCE SANITARY DISTRICT, North Andover, MAL100447
January 1, 2021: SOUTH HADLEY WWTP, Chicopee, MAL100455
January 1, 2021: MARLBOROUGH WESTERLY W W T P, Marlborough, MAL100480
January 1, 2021: SOUTH ESSEX SEWERAGE DISTRICT, Salem, MAL100501
January 1, 2021: LYNN REGIONAL WPCF, Lynn, MAL100552
January 1, 2021: MILFORD W W T F, Hopedale, MAL100579
January 1, 2021: PLYMOUTH W W T P, Plymouth, MAL100587
January 1, 2021: ATTLEBORO W P C F, Attleboro, MAL100595
January 1, 2021: IPSWICH W W T F, Ipswich, MAL100609

HOOSAC WPCF among its neighbors

EPA’s permit file holds 10 discharge permits in the Hemlock Brook-Hoosic River subwatershed (HUC 020200030605), MAL100510 among them. Its county holds 76, 11 of them major permits; MAL100510 is a minor permit.

Other permits in the Hemlock Brook-Hoosic River subwatershed (HUC 020200030605)

555 BEE HILL ROAD, WILLIAMSTOWN MA, Williamstown: MAR1003J6, minor permit, permit term to February 15, 2022
BLACKINTON INFRASTRUCTURE IMPROVEMENT PHASE II, North Adams: MAR10061P, minor permit, permit term to February 16, 2027
GREYLOCK ELEMENTARY SCHOOL, North Adams: MAR10068L, minor permit, permit term to February 16, 2027
HOOSAC W P C F, Williamstown: MA0100510, major permit, discharging to HOOSIC RIVER, permit term to March 31, 2018
MASSDOT BRIDGE N-14-016 SUPERSTRUCTURE REPLACEMENT, North Adams: MAG912314, minor permit, permit term to August 1, 2027
MOUNT GREYLOCK REGIONAL SCHOOL TRACK PROJECT, Williamstown: MAR1004WJ, minor permit, permit term to February 16, 2027
WILLIAMS COLLEGE MULTIPURPOSE RECREATION CENTER, Williamstown: MAR100576, minor permit, permit term to February 16, 2027
WILLIAMS COLLEGE MUSEUM OF ART, Williamstown: MAR1005EN, minor permit, permit term to February 16, 2027
WILLIAMSTOWN SEWER COLLECTION SYSTEM, Williamstown: MAC010510, minor permit, permit term to March 31, 2018

What the register holds for HOOSAC WPCF: its NPDES ID, its permit type and status, its dates, its address in Williamstown, Massachusetts. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MAL100510.

Identity

Facility as filed	HOOSAC WPCF
Permittee as filed	HOOSAC WPCF
NPDES ID	MAL100510
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Associated permit record
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Biosolids
Issued	January 1, 2021
Expiration date	December 31, 2025
Address	Williamstown, MA 01247
Receiving water impaired	303(D) Listed
Subwatershed	Hemlock Brook-Hoosic River (HUC 020200030605)
Other EPA IDs (FRS)	ICIS-AIR source MA0000002511700068

Effluent limits and exceedances

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES MAL100510.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MAL100510.

Inspections

EPA’s inspection file holds no inspection for NPDES MAL100510.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES MAL100510.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, MAL100510.

Start the watch

How we handle your data → Privacy

Nearby on the register

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

Of the 8 biosolids permits in Berkshire County, 0.0% have a violation on file, and HOOSAC WPCF is among them. HOOSAC WPCF also falls within the Hemlock Brook-Hoosic River subwatershed, which holds 10 NPDES permits.