Clean Water Act discharge permit · NPDES MAR1005WP

BLACKSTONE WELLS WATER TREATMENT PLANT, Uxbridge, MA: NPDES MAR1005WP discharge permit, effluent exceedances, inspections, penalties

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

BLACKSTONE WELLS WATER TREATMENT PLANT, held by Hart Engineering Corporation, holds NPDES permit MAR1005WP. EPA’s file records it issued August 28, 2025 and expiring February 16, 2027.

BLACKSTONE WELLS WATER TREATMENT PLANT, Uxbridge, Massachusetts: Coverage under a general permit MAR1005WP, held by Hart Engineering Corporation; Construction stormwater; Effective; issued August 28, 2025, term to February 16, 2027, by U.S. EPA.

Massachusetts holds 3,320 Construction stormwater coverages of this permit type in EPA’s file; 2,589 were issued before MAR1005WP.

Coverages issued nearest MAR1005WP

August 27, 2025: BRIDGEWATER STATE UNIVERSITY BURNELL HALL, Bridgewater, MAR1005W2, held by Michael Sancomb
August 27, 2025: BARNSTABLE FIRE STATION, Barnstable, MAR1005WF, held by W.T. Rich Company Inc.
August 27, 2025: EAST TAUNTON STATION, Taunton, MAR1005WR, held by D.A. Bosworth Company, Inc.
August 27, 2025: WACHUSETT MOUNTAIN, Princeton, MAR1005WT, held by Wachusett Mountain Associates
August 28, 2025: 17 ANTHONY ROAD AND 346R HAVERHILL STREET, North Reading, MAR1005WE, held by JCJ Realty and Germano Family Trust
August 28, 2025: MBTA FOXBORO STATION, Foxborough, MAR1005WV, held by Suffolk Construction
August 28, 2025: RUSSELL SOLAR (#19926), Russell, MAR1005WW, held by Russell Solar, LLC
August 28, 2025: 123 QUARRY ROAD, Acton, MAR1005WX, held by James Hryniewich
August 29, 2025: EVERSOURCE ROCHESTER SUBSTATION, Rochester, MAR1005X2, held by NSTAR Electric Company d/b/a Eversource Energy
September 1, 2025: C129976 J.L. RAYMAAKERS : WEST BROOKFIELD, MA - RESURFACING ON ROUTE 9, West Brookfield, MAR1005WU, held by J. L. Raymaakers & Sons, Inc.

BLACKSTONE WELLS WATER TREATMENT PLANT among its neighbors

EPA’s permit file holds 20 discharge permits in the West River subwatershed (HUC 010900030201), MAR1005WP among them.

Other permits in the West River subwatershed (HUC 010900030201)

#608491, MENDON, RESURFACING AND RELATED WORK ON ROUTE 16, Mendon: MAR1006CW, minor permit, permit term to February 16, 2027
0 PUDDON ST., Upton: MAR1005R5, minor permit, permit term to February 16, 2027
114 MERRIAM ROAD - GRAFTON, MA, Grafton: MAR10005G, minor permit, permit term to February 15, 2022
19 GEORGE HILL ROAD, GRAFTON, MA, Grafton: MAR1004F4, minor permit, permit term to February 16, 2027
61 LELAND STREET, Grafton: MAR1004QL, minor permit, permit term to February 16, 2027
99 W RIVER STREET, UPTON, MA, Upton: MAR1005TL, minor permit, permit term to February 16, 2027
A.F. AMORELLO & SONS, INC.: UPTON, MA - FISKE AVENUE ROADWAY RECONSTRUCTION, Upton: MAR1005Q4, minor permit, permit term to February 16, 2027
GLEN ECHO ESTATES, Upton: MAR10BW24, not classed
HARTFORD AVENUE NORTH AND HIGH STREET PHASE 2 RECONSTRUCTION PROJECT, Upton: MAR10035C, minor permit, permit term to February 15, 2022
KNOWLTON FARM SOLAR, Grafton: MAR12AN05, not classed

What the register holds for BLACKSTONE WELLS WATER TREATMENT PLANT: its NPDES ID, its permit type and status, its dates, its address in Uxbridge, Massachusetts. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MAR1005WP.

Identity

Facility as filed	BLACKSTONE WELLS WATER TREATMENT PLANT
Permittee as filed	Hart Engineering Corporation
NPDES ID	MAR1005WP
Permit status	Effective
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Program	Construction stormwater
Issued	August 28, 2025
Expiration date	February 16, 2027
Issuing agency	U.S. EPA
Address	Uxbridge, MA 01569
Subwatershed	West River (HUC 010900030201)

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 MAR1005WP.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES MAR1005WP.

Inspections

EPA’s inspection file holds no inspection for NPDES MAR1005WP.

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 MAR1005WP.

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, MAR1005WP.

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Nearby on the register

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

Among Uxbridge's 15 storm water construction permits, 0.0% have a violation on file, and BLACKSTONE WELLS WATER TREATMENT PLANT is included. Counting this one, 80.0% of those 15 permits were issued earlier than it. The West River subwatershed lists 20 NPDES permits, including this one.