Clean Water Act discharge permit · NPDES ME0100552
RUMFORD-MEXICO SEWER DISTRICT WWTF, Mexico, ME: NPDES ME0100552 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 20Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
RUMFORD-MEXICO SEWER DISTRICT WWTF, held by RUMFORD-MEXICO SEWERAGE DISTRICT, holds NPDES permit ME0100552, which discharges to Androscoggin River. EPA’s file records it issued January 1, 2016 and expiring December 31, 2020. 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 | RUMFORD-MEXICO SEWER DISTRICT WWTF |
|---|---|
| Permittee as filed | RUMFORD-MEXICO SEWERAGE DISTRICT |
| NPDES ID | ME0100552 |
| 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, 2016 |
| Expiration date | December 31, 2020 |
| Address | Mexico, ME 04257 |
| Receiving water | Androscoggin River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Logan Brook-Androscoggin River (HUC 010400020406) |
| Program components on file | POTW, Pretreatment |
| NAICS | 221320 – Sewage Treatment Facilities |
| 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
- 22Pollutants on file
- 20Under a numeric limit
- 20With a violation of any kind
- 12With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 6 | 168 | 46 | March 31, 2024 | 260% over the limit |
| Solids, total suspended | 6 | 138 | 22 | December 31, 2023 | 266% over the limit |
| BOD, 5-day, percent removal | 1 | 32 | 10 | April 30, 2024 | 109% over the limit |
| Copper, total [as Cu] | 4 | 8 | 8 | August 31, 2015 | 435% over the limit |
| E. coli, thermotol, MF, MTEC | 2 | 26 | 6 | April 30, 2026 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 45 | 5 | April 30, 2019 | 24% over the limit |
| Solids, settleable | 1 | 25 | 3 | December 31, 2023 | 567% over the limit |
| Solids, suspended percent removal | 1 | 24 | 2 | May 31, 2023 | 79% over the limit |
| Zinc, total [as Zn] | 4 | 2 | 2 | June 30, 2013 | 476% over the limit |
| Aluminum, total [as Al] | 4 | 2 | 2 | March 31, 2025 | 69% over the limit |
| Lead, total [as Pb] | 2 | 2 | 2 | June 30, 2013 | 26% over the limit |
| pH | 2 | 45 | 1 | January 31, 2023 | |
| Chlorine, total residual | 1 | 22 | 0 | ||
| Phosphorus, total [as P] | 0 | 20 | 0 | ||
| Phosphate, ortho [as P] | 0 | 20 | 0 | ||
| Priority Pollutants | 1 | 4 | 0 | ||
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 4 | 0 | ||
| Noel Statre 10Day Chronic Salvel. Salmonid | 1 | 4 | 0 | ||
| NOAEL Static 48Hr Acute Ceriodaphnia dubia | 1 | 4 | 0 | ||
| NOAEL Static 48Hr Acute Salvel. Salmonid | 1 | 4 | 0 | ||
| Mercury, total [as Hg] | 2 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES ME0100552.
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
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, ME0100552.
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 ME0100552 there.
Nearby on the register
- Discharge permits in Mexico
- Every permit record in Mexico, 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.