Clean Water Act discharge permit · NPDES ME0100668
THOMASTON WWTF, Thomaston, ME: NPDES ME0100668 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 28Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
THOMASTON WWTF, held by THOMASTON TOWN OF, holds NPDES permit ME0100668, which discharges to St George River. EPA’s file records it issued May 1, 2013 and expiring April 30, 2018. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | THOMASTON WWTF |
|---|---|
| Permittee as filed | THOMASTON TOWN OF |
| NPDES ID | ME0100668 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 1, 2013 |
| Expiration date | April 30, 2018 |
| Address | Thomaston, ME 04861 |
| Receiving water | St George River |
| Subwatershed | St. George River (HUC 010500030107) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 36Pollutants on file
- 28Under a numeric limit
- 34With a violation of any kind
- 5With an effluent exceedance
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 measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Lagoon freeboard | 1 | 5 | 3 | June 30, 2024 | 97% over the limit |
| Coliform, fecal general | 2 | 3 | 3 | February 28, 2017 | 99,999% over the limit |
| Application rate, daily spray irrigation. | 0 | 60 | 2 | November 30, 2005 | 9% over the limit |
| Application rate, weekly spray irrigation. | 0 | 63 | 1 | November 30, 2005 | 46% over the limit |
| pH | 20 | 53 | 1 | January 31, 2023 | |
| Solids, total suspended | 15 | 64 | 0 | ||
| Flow, total | 5 | 60 | 0 | ||
| Nitrogen, nitrate total [as N] | 9 | 46 | 0 | ||
| Temperature, water deg. centigrade | 9 | 41 | 0 | ||
| Specific conductance | 9 | 41 | 0 | ||
| Depth to water level ft below landsurface | 8 | 36 | 0 | ||
| BOD, 5-day, 20 deg. C | 7 | 28 | 0 | ||
| Chromium, total [as Cr] | 18 | 6 | 0 | ||
| Coliform, fecal MF, MFC broth, 44.5 C | 0 | 6 | 0 | ||
| Arsenic, total [as As] | 18 | 5 | 0 | ||
| Cadmium, total [as Cd] | 18 | 5 | 0 | ||
| Copper, total [as Cu] | 18 | 5 | 0 | ||
| Lead, total [as Pb] | 18 | 5 | 0 | ||
| Nickel, total [as Ni] | 18 | 5 | 0 | ||
| Zinc, total [as Zn] | 18 | 5 | 0 | ||
| Flow rate | 1 | 5 | 0 | ||
| Chloride [as Cl] | 0 | 5 | 0 | ||
| Mercury, total [as Hg] | 0 | 5 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 3 | 0 | ||
| Solids, settleable | 1 | 3 | 0 | ||
| Chlorine, total residual | 1 | 3 | 0 | ||
| BOD, 5-day, percent removal | 1 | 3 | 0 | ||
| Solids, suspended percent removal | 1 | 3 | 0 | ||
| Flow, total | 0 | 2 | 0 | ||
| Priority Pollutants | 1 | 1 | 0 | ||
| NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulata | 1 | 1 | 0 | ||
| NOAEL Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 1 | 1 | 0 | ||
| Noel Statre 7Day Chronic Menidia | 0 | 1 | 0 | ||
| Noael Statre 48Hr Acute Menidia | 0 | 1 | 0 | ||
| Application rate, gallons spray irrigation | 8 | 0 | 0 | ||
| Analytical Chemistry | 1 | 0 | 0 |
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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 20, 2023 | Permit Violations - Discharge Without a Valid Permit | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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.
Watch this permit
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Start the watch
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How we handle your data → Privacy
EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID ME0100668 there.
Nearby on the register
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- Every permit record in Thomaston, A to Z
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- Every permit record in Maine, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.