Clean Water Act discharge permit · NPDES MAR041130

MATTAPOISETT MUNICIPAL SEPARATE STORM SEWER SYSTEM, Mattapoisett, MA: NPDES MAR041130 discharge permit, effluent exceedances, inspections, penalties

PendingPermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance

MATTAPOISETT MUNICIPAL SEPARATE STORM SEWER SYSTEM, held by MATTAPOISETT TOWN OF, holds NPDES permit MAR041130. 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.

What the register holds for MATTAPOISETT MUNICIPAL SEPARATE STORM SEWER SYSTEM: its NPDES ID, its permit type and status, its its address in Mattapoisett, Massachusetts. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES MAR041130.

Identity

Facility as filed	MATTAPOISETT MUNICIPAL SEPARATE STORM SEWER SYSTEM
Permittee as filed	MATTAPOISETT TOWN OF
NPDES ID	MAR041130
Permit status	Pending
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Address	Mattapoisett, MA 02739
Receiving water impaired	303(D) Listed
Subwatershed	Mattapoisett River-Frontal Buzzards Bay (HUC 010900020306)

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

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 MAR041130.

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 MAR041130.

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, MAR041130.

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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 MAR041130 there.

Nearby on the register

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

Across the 57 general permit coverages in Plymouth County, 15.8% hold a violation on file, and MATTAPOISETT MUNICIPAL SEPARATE STORM SEWER SYSTEM is counted in that group. EPA's NPDES register lists 57 general permit coverages in Plymouth County, including this permit. The Mattapoisett River-Frontal Buzzards Bay subwatershed, HUC 010900020306, holds 26 NPDES permits, including this permit.