MARYLAND ENVIRONMENTAL SERVICE

NPDES permit MD0065111 · Minor NON-POTW · effective, expires 2027-11-30 · 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)
1of 8 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 (80)

OutfallParameterStatisticLimitMonths
001pHMINIMUM report only all year
001pHMINIMUM report only all year
001pHMAXIMUM report only all year
001pHMAXIMUM report only all year
001Solids, total suspendedDAILY MX <= 100 mg/L all year
001Solids, total suspendedDAILY MX <= 100 mg/L all year
001Nitrite + Nitrate total [as N]QRTR AVG report only all year
001Nitrite + Nitrate total [as N]QRTR AVG report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Phosphorus, total [as P]QRTR AVG report only all year
001Phosphorus, total [as P]QRTR AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Hardness, total [as CaCO3]QRTR AVG report only all year
001Hardness, total [as CaCO3]QRTR AVG report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Iron, total [as Fe]QRTR AVG report only all year
001Iron, total [as Fe]QRTR AVG report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Lead, total [as Pb]QRTR AVG report only all year
001Lead, total [as Pb]QRTR AVG report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Zinc, total [as Zn]QRTR AVG report only all year
001Zinc, total [as Zn]QRTR AVG report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only all year
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
002pHMINIMUM report only all year
002pHMINIMUM report only all year
002pHMAXIMUM report only all year
002pHMAXIMUM report only all year
002Solids, total suspendedDAILY MX <= 100 mg/L all year
002Solids, total suspendedDAILY MX <= 100 mg/L all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, total [as N]DAILY MX report only all year
002Nitrogen, total [as N]DAILY MX report only all year
002Nitrogen, organic total [as N]QRTR AVG report only all year
002Nitrogen, organic total [as N]QRTR AVG report only all year
002Nitrogen, organic total [as N]DAILY MX report only all year
002Nitrogen, organic total [as N]DAILY MX report only all year
002Nitrogen, ammonia total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Nitrite + Nitrate total [as N]QRTR AVG report only all year
002Nitrite + Nitrate total [as N]QRTR AVG report only all year
002Nitrite + Nitrate total [as N]DAILY MX report only all year
002Nitrite + Nitrate total [as N]DAILY MX report only all year
002Phosphorus, total [as P]QRTR AVG report only all year
002Phosphorus, total [as P]QRTR AVG report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Hardness, total [as CaCO3]QRTR AVG report only all year
002Hardness, total [as CaCO3]QRTR AVG report only all year
002Hardness, total [as CaCO3]DAILY MX report only all year
002Hardness, total [as CaCO3]DAILY MX report only all year
002Iron, total [as Fe]QRTR AVG report only all year
002Iron, total [as Fe]QRTR AVG report only all year
002Iron, total [as Fe]DAILY MX report only all year
002Iron, total [as Fe]DAILY MX report only all year
002Lead, total [as Pb]QRTR AVG report only all year
002Lead, total [as Pb]QRTR AVG report only all year
002Lead, total [as Pb]DAILY MX report only all year
002Lead, total [as Pb]DAILY MX report only all year
002Zinc, total [as Zn]QRTR AVG report only all year
002Zinc, total [as Zn]QRTR AVG report only all year
002Zinc, total [as Zn]DAILY MX report only all year
002Zinc, total [as Zn]DAILY MX report only 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

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