STONINGTON SANITARY DISTRICT

NPDES permit ME0101851 · Minor POTW · effective, expires 2030-02-28 · 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
0required values missing, on 0 form(s)
0of 22 forms filed late

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

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among ME permits in EPA's filings — check your permit).

Limits in force (53)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG <= 245 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 217 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHMINIMUM >= 6 SU Jan, Feb, Mar, Apr, Oct, Nov, Dec
001pHMINIMUM >= 6 SU May, Jun, Jul, Aug, Sep
001pHMAXIMUM <= 9 SU Jan, Feb, Mar, Apr, Oct, Nov, Dec
001pHMAXIMUM <= 9 SU May, Jun, Jul, Aug, Sep
001Solids, total suspendedMO AVG <= 163 mg/L all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG <= 144 lb/d all year
001Solids, total suspendedDAILY MX report only all year
001Solids, settleableDAILY MX report only May, Jun, Jul, Aug, Sep
001Solids, settleableDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Fecal coliform, MPN, EC med, 44.5 CMO AVG <= 14 #/100mL all year
001Fecal coliform, MPN, EC med, 44.5 CDAILY MX <= 31 #/100mL all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantROLL AVG <= 106000 gal/d all year
001Chlorine, total residualDAILY MX <= 1 mg/L May, Jun, Jul, Aug, Sep
001BOD, percent removal [total]MO AV MN >= 30 % all year
001EnterococciMO GEO <= 8 MPN/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001EnterococciDAILY MX <= 54 MPN/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001Mercury, total [as Hg]MO AVG <= 38 ng/L all year
001Mercury, total [as Hg]DAILY MX <= 57 ng/L all year
001Solids, suspended percent removalMO AV MN >= 50 % all year
01TBOD, 5-day, 20 deg. CMO AVG <= 245 mg/L all year
01TBOD, 5-day, 20 deg. CDAILY MX report only all year
01TBOD, 5-day, 20 deg. CMO AVG <= 358 lb/d all year
01TBOD, 5-day, 20 deg. CDAILY MX report only all year
01TpHMINIMUM >= 6 SU Jan, Feb, Mar, Apr, Oct, Nov, Dec
01TpHMINIMUM >= 6 SU May, Jun, Jul, Aug, Sep
01TpHMAXIMUM <= 9 SU Jan, Feb, Mar, Apr, Oct, Nov, Dec
01TpHMAXIMUM <= 9 SU May, Jun, Jul, Aug, Sep
01TSolids, total suspendedMO AVG <= 163 mg/L all year
01TSolids, total suspendedDAILY MX report only all year
01TSolids, total suspendedMO AVG <= 238 lb/d all year
01TSolids, total suspendedDAILY MX report only all year
01TSolids, settleableMO AVG report only May, Jun, Jul, Aug, Sep
01TSolids, settleableMO AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
01TSolids, settleableDAILY MX report only May, Jun, Jul, Aug, Sep
01TSolids, settleableDAILY MX report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
01TFecal coliform, MPN, EC med, 44.5 CMO GEO <= 14 #/100mL all year
01TFecal coliform, MPN, EC med, 44.5 CDAILY MX <= 31 #/100mL all year
01TFlow, in conduit or thru treatment plantMO AVG report only all year
01TFlow, in conduit or thru treatment plantROLL AVG <= 175000 gal/d all year
01TChlorine, total residualDAILY MX <= 1 mg/L May, Jun, Jul, Aug, Sep
01TChlorine, total residualDAILY MX <= 1 mg/L all year
01TBOD, percent removal [total]MO AV MN >= 30 % all year
01TEnterococciMO GEO <= 8 MPN/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
01TEnterococciDAILY MX <= 54 MPN/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
01TMercury, total [as Hg]MO AVG <= 38 ng/L all year
01TMercury, total [as Hg]DAILY MX <= 57 ng/L all year
01TSolids, suspended percent removalMO AV MN >= 50 % 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