TOWN OF CULBERTSON

NPDES permit MT0031798 · Minor POTW · effective, expires 2026-11-30 · 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

20values over a limit
0required values missing, on 0 form(s)
0of 16 forms filed late

Last period with anything received: 2026-08-31. Most often over: pH (9), Solids, total suspended (6), Solids, suspended percent removal (3).

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among MT permits in EPA's filings — check your permit).

Limits in force (25)

OutfallParameterStatisticLimitMonths
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only 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 <= 50 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 75 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CWKLY AVG report only all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 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 <= 50 lb/d all year
001Solids, total suspendedWKLY AVG <= 75 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedWKLY AVG report only all year
001Oil and grease, hexane extr methodSINGGRAB report only all year
001Nitrogen, total [as N]MO AVG report only Aug, Sep, Oct
001Nitrogen, ammonia total [as N]SINGGRAB report only all year
001Nitrogen, Kjeldahl, total [as N]SINGGRAB report only Aug, Sep, Oct
001Nitrite + Nitrate total [as N]SINGGRAB report only Aug, Sep, Oct
001Phosphorus, total [as P]SINGGRAB report only Aug, Sep, Oct
001E. coli, MTEC-MFMO AVG report only all year
001BOD, 5-day, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 85 % 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