Clean Water Act discharge permit · NPDES ME0100021
BATH WWTF, Bath, ME: NPDES ME0100021 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
BATH WWTF, held by BATH CITY OF, holds NPDES permit ME0100021, which discharges to Kennebec River. EPA’s file records it issued June 1, 2016 and expiring May 31, 2021. 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 | BATH WWTF |
|---|---|
| Permittee as filed | BATH CITY OF |
| NPDES ID | ME0100021 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | June 1, 2016 |
| Expiration date | May 31, 2021 |
| Address | Bath, ME 04530 |
| Receiving water | Kennebec River |
| Subwatershed | Kennebec River (HUC 010500030603) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 22Pollutants on file
- 17Under a numeric limit
- 20With a violation of any kind
- 8With 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 |
|---|---|---|---|---|---|
| Coliform, fecal general | 4 | 24 | 11 | November 30, 2020 | 99,999% over the limit |
| Enterococci | 0 | 10 | 10 | May 31, 2025 | 272% over the limit |
| Solids, total suspended | 12 | 41 | 8 | February 29, 2016 | 90% over the limit |
| BOD, 5-day, 20 deg. C | 12 | 39 | 5 | July 31, 2014 | 28% over the limit |
| Solids, settleable | 1 | 12 | 5 | February 28, 2018 | 13,233% over the limit |
| Coliform, fecal MF, MFC broth, 44.5 C | 2 | 4 | 4 | December 31, 2024 | 548% over the limit |
| Flow, in conduit or thru treatment plant | 5 | 15 | 3 | March 31, 2009 | 25% over the limit |
| Chlorine, total residual | 4 | 14 | 1 | January 31, 2005 | 433% over the limit |
| pH | 2 | 15 | 0 | ||
| BOD, 5-day, percent removal | 1 | 8 | 0 | ||
| Solids, suspended percent removal | 1 | 8 | 0 | ||
| Priority Pollutants | 1 | 5 | 0 | ||
| NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulata | 1 | 5 | 0 | ||
| Noel Statre 7Day Chronic Menidia | 0 | 4 | 0 | ||
| Noael Static 48Hr Acute Mysid. Bahia | 0 | 4 | 0 | ||
| NOAEL Static 48Hr Acute Menidia sp. | 0 | 4 | 0 | ||
| Overflows | 1 | 3 | 0 | ||
| Surface loading rate | 0 | 3 | 0 | ||
| Analytical Chemistry | 1 | 1 | 0 | ||
| NOAEL Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 1 | 1 | 0 | ||
| Mercury, total [as Hg] | 2 | 0 | 0 | ||
| Flow rate | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES ME0100021.
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.
Watch this permit
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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 ME0100021 there.
Nearby on the register
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- Every permit record in Maine, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.