NAVAL SURFACE WARFARE CTR

NPDES permit PA0036447 · Minor FEDERAL · administratively continued, expires 2026-06-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2026-06-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
22required values missing, on 3 form(s)
0of 34 forms filed late

Last period with anything received: 2026-06-30.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among PA permits in EPA's filings — check your permit).

Limits in force (32)

OutfallParameterStatisticLimitMonths
004pHDAILY MX report only all year
004Solids, total suspendedDAILY MX report only all year
004Oil & GreaseDAILY MX report only all year
004Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
004Iron, total [as Fe]DAILY MX report only all year
005pHDAILY MX report only all year
005Solids, total suspendedDAILY MX report only all year
005Oil & GreaseDAILY MX report only all year
005Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
005Iron, total [as Fe]DAILY MX report only all year
101Temperature, water deg. fahrenheitINST MAX report only all year
101Temperature, water deg. fahrenheitINST MAX <= 110 deg F all year
101Temperature, water deg. fahrenheitINST MIN report only all year
101Temperature, water deg. fahrenheitDAILY MX report only all year
101Temperature, water deg. fahrenheitINST MAX report only all year
101Temp. diff. between samp. & upstrm deg. FINST MAX <= 3 deg F all year
101pHMINIMUM >= 6 SU all year
101pHMAXIMUM <= 9 SU all year
101Flow, in conduit or thru treatment plantMO AVG report only all year
105Temperature, water deg. fahrenheitINST MAX <= 110 deg F all year
105pHMINIMUM >= 6 SU all year
105pHMAXIMUM <= 9 SU all year
105Iron, total [as Fe]MO AVG report only all year
105Flow, in conduit or thru treatment plantMO AVG report only all year
105Chlorine, total residualMO AVG <= .5 mg/L all year
105Chlorine, total residualINST MAX <= 1.2 mg/L all year
105Solids, total dissolvedMO AVG <= 750 mg/L all year
205pHMINIMUM >= 6 SU all year
205pHMAXIMUM <= 9 SU all year
205Flow, in conduit or thru treatment plantMO AVG report only all year
205Chlorine, total residualMO AVG <= .5 mg/L all year
205Chlorine, total residualINST MAX <= 1.6 mg/L all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states