Clean Water Act discharge permit · NPDES ME0100145
CARIBOU U D WWTF, Caribou, ME: NPDES ME0100145 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 18Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
CARIBOU U D WWTF, held by CARIBOU UTILITIES DISTRICT, holds NPDES permit ME0100145, which discharges to Aroostook River. EPA’s file records it issued January 1, 2012 and expiring December 31, 2016. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CARIBOU U D WWTF |
|---|---|
| Permittee as filed | CARIBOU UTILITIES DISTRICT |
| NPDES ID | ME0100145 |
| 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 | January 1, 2012 |
| Expiration date | December 31, 2016 |
| Address | Caribou, ME 04736 |
| Receiving water | Aroostook River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Hockenhull Brook-Aroostook River (HUC 010100041113) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 21Pollutants on file
- 18Under a numeric limit
- 19With a violation of any kind
- 4With 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 |
|---|---|---|---|---|---|
| Flow, in conduit or thru treatment plant | 2 | 59 | 38 | May 31, 2026 | 181% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 72 | 6 | March 31, 2025 | 44% over the limit |
| E. coli, thermotol, MF, MTEC | 2 | 12 | 2 | May 31, 2025 | 271% over the limit |
| BOD, 5-day, percent removal | 1 | 12 | 1 | January 31, 2017 | 73% over the limit |
| Solids, total suspended | 6 | 66 | 0 | ||
| Chlorine, total residual | 2 | 24 | 0 | ||
| pH | 2 | 22 | 0 | ||
| Phosphorus, total [as P] | 0 | 14 | 0 | ||
| NOAEL Static 48Hr Acute Ceriodaphnia dubia | 2 | 12 | 0 | ||
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 2 | 11 | 0 | ||
| Noel Statre 10Day Chronic Salvel. Salmonid | 2 | 11 | 0 | ||
| NOAEL Static 48Hr Acute Salvel. Salmonid | 2 | 11 | 0 | ||
| Solids, settleable | 1 | 11 | 0 | ||
| Solids, suspended percent removal | 1 | 11 | 0 | ||
| Priority pollutants scan [yes/no] | 0 | 11 | 0 | ||
| Phosphate, ortho [as P] | 0 | 8 | 0 | ||
| Aluminum, total [as Al] | 4 | 2 | 0 | ||
| Analytical Chemistry | 2 | 1 | 0 | ||
| Priority Pollutants | 1 | 1 | 0 | ||
| Copper, total [as Cu] | 6 | 0 | 0 | ||
| Mercury, total [as Hg] | 4 | 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 ME0100145.
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 ME0100145 there.
Nearby on the register
- Discharge permits in Caribou
- Every permit record in Caribou, A to Z
- Discharge permits in Maine
- Every permit record in Maine, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.