RUMFORD-MEXICO SEWERAGE DISTRICT

NPDES permit ME0100552 · Major POTW · effective, expires 2029-10-31 · 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

1values over a limit
0required values missing, on 0 form(s)
0of 14 forms filed late

Last period with anything received: 2026-08-31. Most often over: E. coli, thermotol, MF, MTEC (1).

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 (42)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 50 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 663 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX <= 1105 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 995 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 50 mg/L all year
001Solids, total suspendedMO AVG <= 663 lb/d all year
001Solids, total suspendedDAILY MX <= 1105 lb/d all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedWKLY AVG <= 995 lb/d all year
001Solids, settleableDAILY MX <= .3 mL/L all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]MO AVG <= 2.3 lb/d all year
001Copper, total [as Cu]DAILY MX <= .74 lb/d all year
001Lead, total [as Pb]MO AVG report only all year
001Lead, total [as Pb]MO AVG <= .12 lb/d all year
001Zinc, total [as Zn]MO AVG report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total [as Zn]MO AVG <= 2.8 lb/d all year
001Zinc, total [as Zn]DAILY MX <= 11.7 lb/d all year
001Aluminum, total [as Al]MO AVG report only all year
001Aluminum, total [as Al]DAILY MX report only all year
001Aluminum, total [as Al]MO AVG <= .84 lb/d all year
001Aluminum, total [as Al]DAILY MX <= 1.8 lb/d all year
001Phosphate, ortho [as P]MO AVG report only May, Jun, Jul, Aug, Sep
001Phosphate, ortho [as P]DAILY MX report only May, Jun, Jul, Aug, Sep
001Phosphate, ortho [as P]MO AVG report only May, Jun, Jul, Aug, Sep
001Phosphate, ortho [as P]DAILY MX report only May, Jun, Jul, Aug, Sep
001E. coli, thermotol, MF, MTECMO GEO <= 100 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coli, thermotol, MF, MTECDAILY MX <= 236 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001Flow, in conduit or thru treatment plantMO AVG <= 2.65 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= 1 mg/L all year
001Mercury, total [as Hg]MO AVG <= 11.7 ng/L all year
001Mercury, total [as Hg]DAILY MX <= 17.6 ng/L all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % 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