MACHIAS TOWN OF

NPDES permit ME0100323 · Major POTW · administratively continued, expires 2021-03-31 · 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 2021-03-31 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

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 (read off this permit's own late-day counts in EPA's filings).

Limits in force (33)

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 <= 225 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 338 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 <= 225 lb/d all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedWKLY AVG <= 338 lb/d all year
001Solids, settleableDAILY MX <= .3 mL/L all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX <= .23 lb/d all year
001Coliform, fecal MF, MFC broth, 44.5 CMO GEO <= 15 #/100mL all year
001Coliform, fecal MF, MFC broth, 44.5 CDAILY MX <= 50 #/100mL all year
001Flow, in conduit or thru treatment plantMO AVG <= .9 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= .1 mg/L all year
001Chlorine, total residualDAILY MX <= .08 mg/L all year
001Analytical ChemistryVALUE report only all year
001Analytical ChemistryVALUE report only all year
001Mercury, total [as Hg]MO AVG <= 19.3 ng/L all year
001Mercury, total [as Hg]DAILY MX <= 29 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 1Hr 20min Fert. Chronic Arbacia punctulataDAILY MN report only all year
001NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulataDAILY MN report only all year
001Noael Static 48Hr Acute Mysid. BahiaDAILY MN >= 17 % all year
001Noael Static 48Hr Acute Mysid. BahiaDAILY MN >= 17 % 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