BIGFORK COUNTY WATER AND SEWER

NPDES permit MT0020397 · Major POTW · administratively continued, expires 2023-04-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2023-04-30 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

0values over a limit
0required values missing, on 0 form(s)
2of 20 forms filed late

Last period with anything received: 2026-07-31.

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 (38)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Flow rateDAILY AV report only all year
001Flow rateDAILY MX report only all year
001Flow rateDAILY AV 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 <= 125 lb/d all year
001BOD, 5-day, 20 deg. C7 DA AVG <= 259 lb/d all year
001BOD, 5-day, 20 deg. CMO 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 <= 125 lb/d all year
001Solids, total suspendedWKLY AVG <= 259 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 methodMO AVG report only all year
001Oil and grease, hexane extr methodDAILY MX <= 10 mg/L all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]MO AVG <= 42.1 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
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 <= 1 mg/L all year
001Phosphorus, total [as P]MO AVG <= 4.2 lb/d all year
001Thallium, total recoverableSINGSAMP report only all year
001Thallium, total recoverableSINGSAMP report only Jun, Dec
001Aluminum, dissolved [as Al]MO AVG report only all year
001Aluminum, dissolved [as Al]SINGSAMP report only all year
001E. coli, MTEC-MFMOAV GEO <= 32 #/100mL all year
001E. coli, MTEC-MFWE <= 64 #/100mL all year
001BOD, 5-day, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 85 % all year
001Pass/Fail Static Renewal 48Hr Acute Ceriodaphnia dubiaVALUE report only all year
001Pass/Fail Static Renewal 96Hr Acute Pimephales PromelasVALUE 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