United States Dept of Commerce, NOAA, NOS, Cooperative Oxford Laboratory

NPDES permit MD0071030 · Minor FEDERAL · effective, expires 2027-04-30 · 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)
12of 22 forms filed late

Last period with anything received: 2026-07-31.

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 (16)

OutfallParameterStatisticLimitMonths
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMX MO AV <= 7.5 ug/L all year
001Chlorine, total residualMX MO AV <= 7.5 ug/L all year
001Chlorine, total residualDAILY MX <= 13 ug/L all year
001Chlorine, total residualDAILY MX <= 13 ug/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, total residualMX MO AV <= 7.5 ug/L all year
002Chlorine, total residualMX MO AV <= 7.5 ug/L all year
002Chlorine, total residualDAILY MX <= 13 ug/L all year
002Chlorine, total residualDAILY MX <= 13 ug/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