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Clean Water Act discharge permit · NPDES ME0100391

MECHANIC FALLS WWTF, Mechanic Falls, ME: NPDES ME0100391 discharge permit, effluent exceedances, inspections, penalties

MECHANIC FALLS WWTF, held by MECHANIC FALLS SANITARY DISTRICT, holds NPDES permit ME0100391, which discharges to Little Androscoggin River. EPA’s file records it issued December 1, 2014 and expiring November 30, 2019. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedMECHANIC FALLS WWTF
Permittee as filedMECHANIC FALLS SANITARY DISTRICT
NPDES IDME0100391
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedDecember 1, 2014
Expiration dateNovember 30, 2019
AddressMechanic Falls, ME 04256
Receiving waterLittle Androscoggin River
SubwatershedTaylor Pond-Little Androscoggin River (HUC 010400020910)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Solids, total suspended616111September 30, 202537% over the limit
BOD, 5-day, 20 deg. C61544September 30, 201836% over the limit
E. coli, thermotol, MF, MTEC2284August 31, 201799,999% over the limit
Chlorine, total residual2362September 30, 200499,999% over the limit
pH2511July 31, 2003
BOD, 5-day, percent removal1121May 31, 200822% over the limit
Solids, suspended percent removal1121September 30, 202553% over the limit
Flow, in conduit or thru treatment plant2500
Solids, settleable1260
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia1250
Noel Statre 10Day Chronic Salvel. Salmonid1250
NOAEL Static 48Hr Acute Salvel. Salmonid1250
Copper, total [as Cu]16160
Priority Pollutants1150
NOAEL Static 48Hr Acute Ceriodaphnia dubia1140
Noel Statre 7Day Chronic Pimephales0130
NOAEL Static 48Hr Acute Pimephales promelas0130
Analytical Chemistry1120
Lead, total [as Pb]4110
Arsenic, total [as As]0100
Thallium, total [as Tl]0100
Mercury, total [as Hg]210

Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES ME0100391.

Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.

Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES ME0100391 for the MECHANIC FALLS WWTF in Mechanic Falls, ME, held by MECHANIC FALLS SANITARY DISTRICT, with a status of administratively continued and a discharger class of Major Discharger. The page lists 18 pollutants under a numeric limit, 7 pollutants with an effluent exceedance, and 22 pollutants on file for effluent limits and exceedances. The permit was issued December 1, 2014 and expires November 30, 2019, and the figures reflect EPA's permit file as loaded on September 15, 2026.