Clean Water Act discharge permit · NPDES ME0000868

PORTSMOUTH NAVAL SHIPYARD, Kittery, ME: NPDES ME0000868 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
4Pollutants under a numeric limit
2Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

PORTSMOUTH NAVAL SHIPYARD holds NPDES permit ME0000868, which discharges to Piscataqua River. EPA’s file records it issued August 1, 2016 and expiring July 31, 2021.

PORTSMOUTH NAVAL SHIPYARD, Kittery, Maine: Individual permit ME0000868; Administratively continued (past its expiration date and still in force until reissued); issued August 1, 2016, term to July 31, 2021; discharges to Piscataqua River.

Solids, total suspended: 6 limits, 82 violations of any kind, 4 effluent exceedances, latest July 31, 2019, largest 141% over the limit.
pH: 6 limits, 79 violations of any kind, 3 effluent exceedances, latest May 31, 2019.
Flow, in conduit or thru treatment plant: 6 limits, 80 violations of any kind, 0 effluent exceedances.
Oil and grease, hexane extr method: 3 limits, 39 violations of any kind, 0 effluent exceedances.

PORTSMOUTH NAVAL SHIPYARD among its neighbors

EPA’s permit file holds 95 discharge permits in the Portsmouth Harbor subwatershed (HUC 010600031001), ME0000868 among them. Its county holds 88, 11 of them major permits; ME0000868 is a minor permit.

Other permits in the Portsmouth Harbor subwatershed (HUC 010600031001)

100 DURGIN LANE, Portsmouth: 01R10I044, minor permit, permit term to February 16, 2027
100 DURGIN LANE, Portsmouth: 01R10I045, minor permit, permit term to February 16, 2027
100 NEW HAMPSHIRE AVENUE, Portsmouth: NHR1001US, minor permit, permit term to February 16, 2027
100 NEW HAMPSHIRE AVENUE, Portsmouth: NHR1001UT, minor permit, permit term to February 16, 2027
105 BARTLETT STREET - MULTIFAMILY DEVELOPMENT, Portsmouth: NHR10020X, minor permit, permit term to February 16, 2027
105 BARTLETT STREET - MULTIFAMILY DEVELOPMENT, Portsmouth: NHR10021B, minor permit, permit term to February 16, 2027
200 CHASE DRIVE, Portsmouth: NHR100247, minor permit, permit term to February 16, 2027
2021 E194, U181, & 3135 TRANSMISSION LINE STRUCTURE REPLACEMENT, Portsmouth: NHR1001F9, minor permit, permit term to February 16, 2027
2021 E194, U181, & 3135 TRANSMISSION LINE STRUCTURE REPLACEMENT PROJECT, Portsmouth: NHR1001EG, minor permit, permit term to February 15, 2022
282 CORPORATE DRIVE, Portsmouth: 01R10I02P, minor permit, permit term to February 16, 2027

Identity

Facility as filed	PORTSMOUTH NAVAL SHIPYARD
Permittee as filed	PORTSMOUTH NAVAL SHIPYARD
NPDES ID	ME0000868
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Federal facility
Issued	August 1, 2016
Expiration date	July 31, 2021
Address	Kittery, ME 03904
Receiving water	Piscataqua River
Receiving water impaired	303(D) Listed
Subwatershed	Portsmouth Harbor (HUC 010600031001)
SIC	3731 – Ship Building And Repairing
Other EPA IDs (FRS)	RCRA handler ME7170022019; ICIS-AIR source ME0000002303100004

Effluent limits and exceedances

4Pollutants on file
4Under a numeric limit
4With a violation of any kind
2With 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	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Solids, total suspended	6	82	4	July 31, 2019	141% over the limit
pH	6	79	3	May 31, 2019
Flow, in conduit or thru treatment plant	6	80	0
Oil and grease, hexane extr method	3	39	0

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES ME0000868.

Inspections

EPA’s inspection file holds no inspection for NPDES ME0000868.

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 ME0000868.

Watch this permit

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Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES ME0000868 for Portsmouth Naval Shipyard in Kittery, ME, which discharges to the Piscataqua River and is administratively continued. The register lists a minor discharger class, 2 pollutants under a numeric limit, and 2 pollutants with an effluent exceedance.