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Clean Water Act discharge permit · NPDES RI0023981

NAVAL UNDERSEA WARFARE CENTER, Newport, RI: NPDES RI0023981 discharge permit, effluent exceedances, inspections, penalties

NAVAL UNDERSEA WARFARE CENTER, held by NAVAL UNDERSEA WARFARE CENTER DIVISION NEWPORT, holds NPDES permit RI0023981, which discharges to Narragansett Bay East Passage. EPA’s file records it issued September 11, 2019 and expiring September 10, 2024. 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 NAVAL UNDERSEA WARFARE CENTER: its NPDES ID, its permit type and status, its dates, its address in Newport, Rhode Island, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES RI0023981.

Identity

Facility as filedNAVAL UNDERSEA WARFARE CENTER
Permittee as filedNAVAL UNDERSEA WARFARE CENTER DIVISION NEWPORT
NPDES IDRI0023981
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typeFederal facility
IssuedSeptember 11, 2019
Expiration dateSeptember 10, 2024
AddressNewport, RI 02841
Receiving waterNARRAGANSETT BAY EAST PASSAGE
SubwatershedLower East Passage (HUC 010900040909)
Other EPA IDs (FRS)RCRA handler RI8170024790; ICIS-AIR source RI0000004400500701

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES RI0023981.

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 RI0023981.

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, RI0023981.

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How often?
  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

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 RI0023981 there.

Nearby on the register

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

What this page shows

The NAVAL UNDERSEA WARFARE CENTER permit, which has the NPDES ID RI0023981, is one of 25 NPDES permits in the Lower East Passage subwatershed, and it is among 8 individual permits in Newport County, where 62.5% of the comparable individual permits carry a violation on file. This permit records no pollutants under a numeric limit and no pollutants with an effluent exceedance.