NORTH HARFORD JR/SR/H.S. WWTP

NPDES permit MD0023281 · Minor NON-POTW · effective, expires 2027-12-31 · 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.

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

4values over a limit
0required values missing, on 0 form(s)
0of 28 forms filed late

Last period with anything received: 2026-07-31. Most often over: pH (2), Nitrogen, ammonia total [as N] (2).

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 (29)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MINIMUM >= 5 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 5 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 7.5 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 5 lb/d all year
001Solids, total suspendedWKLY AVG <= 7.5 lb/d all year
001Nitrogen, ammonia total [as N]MX MO AV <= 5.4 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX MO AV <= 3.9 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= 10.3 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= .9 lb/d May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MX MO AV <= .65 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= 1.7 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Chlorine, total residualMAXIMUM < .029 mg/L all year
001E. coliMO GEOMN <= 126 MPN/100mL all year
001BOD, 5-day, percent removalMO AVG report only all year
001Solids, suspended percent removalMO AVG report only all year
002Nitrogen, total [as N]MO AVG report only all year
002Nitrogen, ammonia total [as N]MO AVG report only all year
002Phosphate, total [as PO4]MO AVG report only all year
101BOD, 5-day, 20 deg. CMO AVG report only all year
101Solids, total suspendedMO AVG report only all year
MW1Nitrogen, total [as N]MAXIMUM <= 10 mg/L all year
MW2Nitrogen, total [as N]MAXIMUM 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