Delaware River Works (Drawbridge Claymont)

NPDES permit DE0000655 · Minor NON-POTW · expired, expires 2024-12-31 · 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 2024-12-31 and is expired: 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
0required values missing, on 0 form(s)
0of 10 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 DE permits in EPA's filings — check your permit).

Limits in force (18)

OutfallParameterStatisticLimitMonths
001pHDAILY MN report only all year
001pHDAILY MX report only all year
001Solids, total suspendedDAILY MX report only all year
001Oil & GreaseDAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX <= 19 mg/L all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Iron, total recoverableDAILY MX report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Aluminum, total [as Al]DAILY MX report only all year
001Surfactants [MBAS]DAILY MX report only all year
001BenzidineDAILY MX report only all year
001DDT/DDD/DDE, sum of p,p' & o,p' isomersDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY AV report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
001pH range excursions, monthly total accumMAXIMUM <= 446 min 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