Baltimore County DPW

NPDES permit MD0063924 · Minor NON-POTW · effective, expires 2027-09-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

0values over a limit
0required values missing, on 0 form(s)
0of 5 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 MD permits in EPA's filings — check your permit).

Limits in force (72)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CQRTR AVG <= 10 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 15 mg/L all year
001pHMINIMUM >= 6.5 SU all year
001pHDAILY MX <= 8.5 SU all year
001Solids, total suspendedQRTR AVG <= 15 mg/L all year
001Solids, total suspendedDAILY MX <= 30 mg/L all year
001Nitrogen, total [as N]QRTR AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]QT report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]ANNL MAX report only all year
001Nitrogen, ammonia total [as N]QRTR AVG <= 1.43 mg/L Apr, May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]QRTR AVG <= 2.65 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 7.7 mg/L Apr, May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 7.7 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]DAILY MX report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Zinc, total [as Zn]QRTR AVG <= .11 mg/L all year
001Zinc, total [as Zn]DAILY MX <= .12 mg/L all year
001DichloromethaneDAILY MX <= 5 ug/L all year
001Carbon tetrachlorideQRTR AVG report only all year
001Carbon tetrachlorideDAILY MX report only all year
0011,2-DichloroethaneDAILY MX <= 5 ug/L all year
001BromoformQRTR AVG report only all year
001BromoformDAILY MX report only all year
001DibromochloromethaneQRTR AVG report only all year
001DibromochloromethaneDAILY MX report only all year
001ChloroformQRTR AVG report only all year
001ChloroformDAILY MX report only all year
001TolueneQRTR AVG report only all year
001TolueneDAILY MX report only all year
001BenzeneQRTR AVG report only all year
001BenzeneDAILY MX report only all year
001ChlorobenzeneQRTR AVG report only all year
001ChlorobenzeneDAILY MX report only all year
001EthylbenzeneQRTR AVG report only all year
001EthylbenzeneDAILY MX report only all year
0011,2-DichlorobenzeneQRTR AVG report only all year
0011,2-DichlorobenzeneDAILY MX report only all year
0011,2-DichloropropaneQRTR AVG report only all year
0011,2-DichloropropaneDAILY MX report only all year
0011,4-DichlorobenzeneQRTR AVG report only all year
0011,4-DichlorobenzeneDAILY MX report only all year
001PhenolQRTR AVG <= .015 mg/L all year
001PhenolQRTR AVG <= .015 mg/L all year
001PhenolDAILY MX <= .026 mg/L all year
001PhenolDAILY MX <= .026 mg/L all year
001Vinyl chlorideQRTR AVG report only all year
001Vinyl chlorideDAILY MX 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
001.alpha.-TerpineolQRTR AVG <= .016 mg/L all year
001.alpha.-TerpineolQRTR AVG <= .016 mg/L all year
001.alpha.-TerpineolDAILY MX <= .033 mg/L all year
001.alpha.-TerpineolDAILY MX <= .033 mg/L all year
001Volatile Organic Compound [VOC]QRTR AVG report only all year
001Volatile Organic Compound [VOC]DAILY MX <= .1 mg/L all year
0011,1-DichloroetheneDAILY MX <= 7 ug/L all year
001p-CresolQRTR AVG <= .014 mg/L all year
001p-CresolQRTR AVG <= .014 mg/L all year
001p-CresolDAILY MX <= .025 mg/L all year
001p-CresolDAILY MX <= .025 mg/L all year
001Benzoic acids, totalQRTR AVG <= .071 mg/L all year
001Benzoic acids, totalQRTR AVG <= .071 mg/L all year
001Benzoic acids, totalDAILY MX <= .12 mg/L all year
001Benzoic acids, totalDAILY MX <= .12 mg/L all year
001trans-1,2-DichloroetheneMAXIMUM <= 100 ug/L all year
001TetrachloroetheneDAILY MX <= 5 ug/L all year
001TrichloroetheneDAILY MX <= 5 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