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Clean Water Act discharge permit · NPDES MAR1006C2

U173/W123 ACR, Charlton, MA: NPDES MAR1006C2 discharge permit, effluent exceedances, inspections, penalties

U173/W123 ACR, held by New England Power Company, holds NPDES permit MAR1006C2. EPA’s file records it issued May 19, 2026 and expiring February 16, 2027. 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.

What the register holds for U173/W123 ACR: its NPDES ID, its permit type and status, its dates, its address in Charlton, Massachusetts. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MAR1006C2.

Identity

Facility as filedU173/W123 ACR
Permittee as filedNew England Power Company
NPDES IDMAR1006C2
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedMay 19, 2026
Expiration dateFebruary 16, 2027
Issuing agencyU.S. EPA
AddressCharlton, MA 01507
Receiving water impaired303(D) Listed
SubwatershedCady Brook-Quinebaug River (HUC 011000010104)

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

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES MAR1006C2.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES MAR1006C2.

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

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, MAR1006C2.

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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 MAR1006C2 there.

Nearby on the register

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

What this page shows

U173/W123 ACR is among the 15 storm water construction permits in Charlton, where 0.0% carry a violation on file. The Cady Brook-Quinebaug River subwatershed holds 35 NPDES permits, counting this permit.