Clean Water Act discharge permit · NPDES ME0100854
KENNEBEC STD WWTF, Waterville, ME: NPDES ME0100854 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 17Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
KENNEBEC STD WWTF, held by KENNEBEC SANITARY TREATMENT DISTRICT, holds NPDES permit ME0100854, which discharges to Kennebec River. EPA’s file records it issued November 1, 2015 and expiring October 31, 2020. 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 | KENNEBEC STD WWTF |
|---|---|
| Permittee as filed | KENNEBEC SANITARY TREATMENT DISTRICT |
| NPDES ID | ME0100854 |
| 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 | November 1, 2015 |
| Expiration date | October 31, 2020 |
| Address | Waterville, ME 04901 |
| Receiving water | Kennebec River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Riggs Branch-Kennebec River (HUC 010300032404) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 20Pollutants on file
- 17Under a numeric limit
- 20With a violation of any kind
- 7With 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 |
|---|---|---|---|---|---|
| E. coli, thermotol, MF, MTEC | 3 | 32 | 14 | April 30, 2026 | 99,999% over the limit |
| Solids, total suspended | 6 | 115 | 13 | January 31, 2017 | 444% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 115 | 7 | January 31, 2017 | 316% over the limit |
| pH | 2 | 39 | 3 | November 30, 2024 | |
| Chlorine, total residual | 2 | 38 | 2 | June 30, 2024 | 50% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 20 | 2 | April 30, 2014 | 14% over the limit |
| Solids, settleable | 1 | 19 | 1 | March 31, 2011 | 200% over the limit |
| Phosphorus, total [as P] | 0 | 54 | 0 | ||
| BOD, 5-day, percent removal | 1 | 18 | 0 | ||
| Solids, suspended percent removal | 1 | 18 | 0 | ||
| Aluminum, total [as Al] | 4 | 14 | 0 | ||
| Mercury, total [as Hg] | 2 | 14 | 0 | ||
| Priority Pollutants | 1 | 7 | 0 | ||
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 6 | 0 | ||
| NOAEL Static 48Hr Acute Ceriodaphnia dubia | 1 | 6 | 0 | ||
| Noel Statre 7Day Chronic Pimephales | 0 | 6 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 0 | 6 | 0 | ||
| Noel Statre 10Day Chronic Salvel. Salmonid | 1 | 2 | 0 | ||
| NOAEL Static 48Hr Acute Salvel. Salmonid | 1 | 2 | 0 | ||
| Analytical Chemistry | 1 | 1 | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 21, 2021 | Management Practice Violations - Best Management Practice Deficiencies | ST6 |
| November 29, 2019 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| November 29, 2019 | Management Practice Violations - Best Management Practice Deficiencies | ST6 |
| November 29, 2019 | WW SSO - Discharge to Waters | 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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, ME0100854.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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 ME0100854 there.
Nearby on the register
- Discharge permits in Waterville
- Every permit record in Waterville, A to Z
- Discharge permits in Maine
- Every permit record in Maine, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.