Town of Hebron

NPDES permit MD0059617 · Minor POTW · administratively continued, expires 2026-07-31 · 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 2026-07-31 and is administratively continued: 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

18values over a limit
0required values missing, on 0 form(s)
0of 19 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, 5-day, 20 deg. C (12), Enterococci (3), Phosphorus, total [as P] (3).

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 (42)

OutfallParameterStatisticLimitMonths
001Color [PT-CO units]MO AVG <= 158 col unit (pc) all year
001Oxygen, dissolved [DO]MH >= 6 mg/L Feb, Mar, Apr, May
001Oxygen, dissolved [DO]MO AV MN >= 5.5 mg/L all year
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L all year
001BOD, 5-day, 20 deg. CMX MO AV <= 30 mg/L all year
001BOD, 5-day, 20 deg. CMX WK AV <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMX MO AV <= 25 lb/d all year
001BOD, 5-day, 20 deg. CMX WK AV <= 38 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMX MO AV <= 90 mg/L all year
001Solids, total suspendedMX MO AV <= 76 lb/d all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]MO TOTAL report only all year
001Nitrogen, total [as N]CUM TOTL report only all year
001Nitrogen, organic total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MX MO AV <= 5.1 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG report only Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= 4.2 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]CUM TOTL <= 428 lb/yr all year
001Phosphorus, total [as P]MO TOTAL 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 plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMAXIMUM <= .04 mg/L all year
001EnterococciMAXIMUM <= 35 MPN/100mL all year
001Phosphorous, in total orthophosphateMO AVG report only all year
001Flow, totalTOTAL report only all year
101Oxygen, dissolved [DO]MINIMUM report only all year
101Oxygen, dissolved [DO]MINIMUM report only all year
101BOD, 5-day, 20 deg. CQRTR AVG report only all year
101BOD, 5-day, 20 deg. CQRTR AVG report only all year
101EnterococciQRTR AVG report only all year
101EnterococciQRTR AVG report only all year
201BOD, 5-day, 20 deg. CQRTR AVG report only all year
201BOD, 5-day, 20 deg. CQRTR AVG report only all year
201EnterococciQRTR AVG report only all year
201EnterococciQRTR AVG 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