CARIBOU UTILITIES DISTRICT

NPDES permit ME0100145 · Major POTW · administratively continued, expires 2022-01-31 · 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 2022-01-31 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

2values over a limit
0required values missing, on 0 form(s)
1of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Flow, in conduit or thru treatment plant (2).

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (43)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 65 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 642 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 957 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 60 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 856 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 45 mg/L all year
001Solids, total suspendedDAILY MX <= 65 mg/L all year
001Solids, total suspendedMO AVG <= 642 lb/d all year
001Solids, total suspendedDAILY MX <= 927 lb/d all year
001Solids, total suspendedWKLY AVG <= 60 mg/L all year
001Solids, total suspendedWKLY AVG <= 856 lb/d all year
001Solids, settleableDAILY MX <= .3 mL/L all year
001Phosphorus, total [as P]MO AVG report only Jun, Jul, Aug, Sep
001Phosphorus, total [as P]DAILY MX report only Jun, Jul, Aug, Sep
001Phosphorus, total [as P]MO AVG report only Jun, Jul, Aug, Sep
001Phosphorus, total [as P]MO AVG report only Jun, Jul, Aug, Sep
001Phosphorus, total [as P]DAILY MX report only Jun, Jul, Aug, Sep
001Phosphorus, total [as P]MO AVG report only Jun, Jul, Aug, Sep
001Aluminum, total [as Al]MO AVG report only all year
001Aluminum, total [as Al]MO AVG <= 6.2 lb/d all year
001E. coli, thermotol, MF, MTECMO GEO <= 126 #/100mL May, Jun, Jul, Aug, Sep
001E. coli, thermotol, MF, MTECDAILY MX <= 949 #/100mL May, Jun, Jul, Aug, Sep
001Flow, in conduit or thru treatment plantMO AVG <= 1.71 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= .72 mg/L all year
001Chlorine, total residualDAILY MX <= 1 mg/L all year
001Analytical ChemistryVALUE report only all year
001Analytical ChemistryVALUE report only all year
001Mercury, total [as Hg]MO AVG <= 18.3 ng/L all year
001Mercury, total [as Hg]DAILY MX <= 27.5 ng/L all year
001BOD, 5-day, percent removalMO AV MN >= 65 % all year
001Solids, suspended percent removalMO AV MN >= 65 % all year
001NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaDAILY MN >= 1.54 % all year
001NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaDAILY MN >= 1.54 % all year
001Noel Statre 10Day Chronic Salvel. SalmonidDAILY MN report only all year
001Noel Statre 10Day Chronic Salvel. SalmonidDAILY MN report only all year
001NOAEL Static 48Hr Acute Ceriodaphnia dubiaDAILY MN report only all year
001NOAEL Static 48Hr Acute Ceriodaphnia dubiaDAILY MN report only all year
001NOAEL Static 48Hr Acute Salvel. SalmonidDAILY MN report only all year
001NOAEL Static 48Hr Acute Salvel. SalmonidDAILY MN 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