Selbyville Wastewater Treatment Facility

NPDES permit DE0020010 · Major POTW · effective, expires 2028-04-30 · 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.

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 (read off this permit's own late-day counts in EPA's filings).

Limits in force (28)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CDAILY AV <= 15 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 23 mg/L all year
001BOD, 5-day, 20 deg. CDAILY AV <= 188 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 288 lb/d all year
001BOD, 5-day, 20 deg. CDAILY AV report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedDAILY AV <= 15 mg/L all year
001Solids, total suspendedDAILY MX <= 23 mg/L all year
001Solids, total suspendedDAILY AV <= 188 lb/d all year
001Solids, total suspendedDAILY MX <= 288 lb/d all year
001Solids, total suspendedDAILY AV report only all year
001Solids, total suspendedDAILY MX report only all year
001Copper, dissolved [as Cu]DAILY AV report only all year
001Copper, dissolved [as Cu]DAILY MX report only all year
001Copper, dissolved [as Cu]DAILY AV report only all year
001Copper, dissolved [as Cu]DAILY MX report only all year
001Selenium, total [as Se]DAILY AV report only all year
001Selenium, total [as Se]DAILY MX report only all year
001Selenium, total [as Se]DAILY AV report only all year
001Selenium, total [as Se]DAILY MX report only all year
001Enterococci: group D, MF trans, M-E, EIAGEO MEAN <= 10 CFU/100mL all year
001Enterococci: group D, MF trans, M-E, EIADAILY MX <= 104 CFU/100mL 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
001Chlorine, total residualDAILY MN >= 1 mg/L all year
001Chlorine, total residualDAILY MX <= 4 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