LAKE COUNTY-CHARLO WATER & SEWER DIS

NPDES permit MT0022551 · Minor POTW · effective, expires 2030-12-31 · 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

0values over a limit
75required values missing, on 7 form(s)
13of 14 forms filed late

Last period with anything received: 2026-06-30.

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 (31)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigrade30DA AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Oxygen, dissolved [DO]MINIMUM report only all year
001Oxygen, dissolved [DO]7 DA AVG report only all year
001BOD, 5-day, 20 deg. C30DA AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. C7 DA AVG <= 45 mg/L all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspended30DA AVG <= 30 mg/L all year
001Solids, total suspended7 DA AVG <= 45 mg/L all year
001Oil & GreaseMAXIMUM <= 10 mg/L all year
001Nitrogen, total [as N]AH report only May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]30DA AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrite + Nitrate total [as N]AH report only May, Jun, Jul, Aug, Sep
001Phosphorus, total [as P]AH report only May, Jun, Jul, Aug, Sep
001E. coli30DA GM <= 126 #/100mL all year
001E. coliDAILY MX <= 252 #/100mL all year
001Nitrogen, Kjeldahl TotalAH report only May, Jun, Jul, Aug, Sep
001Date Discharge BeganVALUE report only all year
001Flow rate30DA AVG report only all year
001Flow rateDAILY MX report only all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Duration of dischargeVALUE report only all year
001Oil and grease visualINST MAX <= 0 N=0;Y=1 all year
001IBOD, 5-day, 20 deg. C30DA AVG report only all year
001ISolids, total suspended30DA AVG report only all year
RW01Temperature, water deg. centigradeAH report only all year
RW01Oxygen, dissolved [DO]AH report only all year
RW01pHAH 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