SANFORD SEWERAGE DISTRICT

NPDES permit ME0100617 · Major POTW · administratively continued, expires 2023-07-31 · 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 2023-07-31 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

1values over a limit
0required values missing, on 0 form(s)
1of 15 forms filed late

Last period with anything received: 2026-08-31. Most often over: Aluminum, total [as Al] (1).

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 (89)

OutfallParameterStatisticLimitMonths
001Flow rateDAILY MN >= 100 cfs Feb, Mar, Apr
001Flow rateDAILY MN >= 20 cfs all year
001Oxygen, dissolved [DO]DAILY MN >= 7.5 ppm May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Feb, Mar, Apr
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 10 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CDAILY MX <= 50 mg/L Feb, Mar, Apr
001BOD, 5-day, 20 deg. CDAILY MX <= 50 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX <= 20 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMO AVG <= 2202 lb/d Feb, Mar, Apr
001BOD, 5-day, 20 deg. CMO AVG <= 1101 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 261 lb/d May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CDAILY MX <= 3670 lb/d Feb, Mar, Apr
001BOD, 5-day, 20 deg. CDAILY MX <= 1835 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CDAILY MX <= 522 lb/d May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 15 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L Feb, Mar, Apr
001BOD, 5-day, 20 deg. CWKLY AVG <= 1651 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 392 lb/d May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CWKLY AVG <= 3303 lb/d Feb, Mar, Apr
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L Feb, Mar, Apr
001Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, total suspendedMO AVG <= 10 mg/L May, Jun, Jul, Aug, Sep
001Solids, total suspendedDAILY MX <= 50 mg/L Feb, Mar, Apr
001Solids, total suspendedDAILY MX <= 50 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, total suspendedDAILY MX <= 20 mg/L May, Jun, Jul, Aug, Sep
001Solids, total suspendedMO AVG <= 2202 lb/d Feb, Mar, Apr
001Solids, total suspendedMO AVG <= 1101 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, total suspendedMO AVG <= 290 lb/d May, Jun, Jul, Aug, Sep
001Solids, total suspendedDAILY MX <= 3670 lb/d Feb, Mar, Apr
001Solids, total suspendedDAILY MX <= 1835 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, total suspendedDAILY MX <= 580 lb/d May, Jun, Jul, Aug, Sep
001Solids, total suspendedWKLY AVG <= 45 mg/L Feb, Mar, Apr
001Solids, total suspendedWKLY AVG <= 45 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, total suspendedWKLY AVG <= 15 mg/L May, Jun, Jul, Aug, Sep
001Solids, total suspendedWKLY AVG <= 3303 lb/d Feb, Mar, Apr
001Solids, total suspendedWKLY AVG <= 1651 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, total suspendedWKLY AVG <= 435 lb/d May, Jun, Jul, Aug, Sep
001Solids, settleableDAILY MX <= .3 mL/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 12.5 mg/L Feb, Mar, Apr
001Nitrogen, ammonia total [as N]MO AVG <= 11.3 mg/L Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 612 lb/d Feb, Mar, Apr
001Nitrogen, ammonia total [as N]MO AVG <= 276 lb/d Jan, Feb, Mar, Apr, May, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 14.5 lb/d May, Jun, Jul, Aug, Sep
001Phosphorus, total [as P]MO AVG <= 23 lb/d Feb, Mar, Apr
001Phosphorus, total [as P]MO AVG <= 3 lb/d May, Jun, Jul, Aug, Sep
001Phosphorus, total [as P]MO AVG <= 23 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Phosphorus, total [as P]DAILY MX <= 46 lb/d Feb, Mar, Apr
001Phosphorus, total [as P]DAILY MX <= 46 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Copper, total [as Cu]MO AVG report only Feb, Mar, Apr
001Copper, total [as Cu]MO AVG report only Mar, Jun, Sep, Dec
001Copper, total [as Cu]DAILY MX report only Feb, Mar, Apr
001Copper, total [as Cu]DAILY MX report only Mar, Jun, Sep, Dec
001Copper, total [as Cu]MO AVG <= .56 lb/d Feb, Mar, Apr
001Copper, total [as Cu]MO AVG <= .28 lb/d Mar, Jun, Sep, Dec
001Copper, total [as Cu]DAILY MX <= .72 lb/d Feb, Mar, Apr
001Copper, total [as Cu]DAILY MX <= .36 lb/d Mar, Jun, Sep, Dec
001Aluminum, total [as Al]MO AVG report only Feb, Mar, Apr
001Aluminum, total [as Al]MO AVG report only Mar, Jun, Sep, Dec
001Aluminum, total [as Al]MO AVG <= 18.8 lb/d Feb, Mar, Apr
001Aluminum, total [as Al]MO AVG <= 9.39 lb/d Mar, Jun, Sep, Dec
001E. coli, thermotol, MF, MTECMO GEO <= 126 #/100mL May, Jun, Jul, Aug, Sep
001E. coli, thermotol, MF, MTECDAILY MX <= 643 #/100mL May, Jun, Jul, Aug, Sep
001Flow, in conduit or thru treatment plantMO AVG <= 8.8 MGD Feb, Mar, Apr
001Flow, in conduit or thru treatment plantMO AVG <= 4.4 MGD Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Flow, in conduit or thru treatment plantMO AVG <= 3.48 MGD May, Jun, Jul, Aug, Sep
001Flow, in conduit or thru treatment plantDAILY MX report only Feb, Mar, Apr
001Flow, in conduit or thru treatment plantDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Flow, in conduit or thru treatment plantDAILY MX report only May, Jun, Jul, Aug, Sep
001Flow, in conduit or thru treatment plantWKLY AVG report only Feb, Mar, Apr
001Analytical ChemistryVALUE report only all year
001Analytical ChemistryVALUE report only all year
001Mercury, total [as Hg]MO AVG <= 4.5 ng/L Feb, Mar, Apr
001Mercury, total [as Hg]MO AVG <= 4.5 ng/L all year
001Mercury, total [as Hg]DAILY MX <= 6.8 ng/L Feb, Mar, Apr
001Mercury, total [as Hg]DAILY MX <= 6.8 ng/L all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaDAILY MN report only all year
001NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaDAILY MN report only 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

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