Clean Water Act discharge permit · NPDES ME0100498
ORONO WPCF, Orono, ME: NPDES ME0100498 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 20Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
ORONO WPCF, held by ORONO TOWN OF, holds NPDES permit ME0100498, which discharges to Penobscot River. EPA’s file records it issued December 1, 2012 and expiring November 30, 2017. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | ORONO WPCF |
|---|---|
| Permittee as filed | ORONO TOWN OF |
| NPDES ID | ME0100498 |
| 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 | December 1, 2012 |
| Expiration date | November 30, 2017 |
| Address | Orono, ME 04473 |
| Receiving water | Penobscot River |
| Subwatershed | Marsh Island-Penobscot River (HUC 010200050603) |
| Other EPA IDs (FRS) | ICIS-AIR source ME0000002301901069 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 20Pollutants on file
- 20Under a numeric limit
- 10With a violation of any kind
- 6With 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 | 23 | 14 | April 30, 2025 | 36% over the limit |
| BOD, 5-day, 20 deg. C | 6 | 39 | 7 | February 28, 2022 | 21% over the limit |
| pH | 2 | 16 | 6 | September 30, 2020 | |
| Solids, settleable | 1 | 7 | 2 | September 30, 2014 | 233% over the limit |
| E. coli, thermotol, MF, MTEC | 2 | 2 | 2 | September 30, 2018 | 29% over the limit |
| BOD, 5-day, percent removal | 1 | 6 | 1 | February 28, 2011 | 13% over the limit |
| Solids, total suspended | 6 | 31 | 0 | ||
| Chlorine, total residual | 1 | 5 | 0 | ||
| Solids, suspended percent removal | 1 | 5 | 0 | ||
| Mercury, total [as Hg] | 2 | 4 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Copper, total [as Cu] | 4 | 0 | 0 | ||
| Lead, total [as Pb] | 2 | 0 | 0 | ||
| Aluminum, total [as Al] | 2 | 0 | 0 | ||
| Priority Pollutants | 1 | 0 | 0 | ||
| Analytical Chemistry | 1 | 0 | 0 | ||
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Noel Statre 10Day Chronic Salvel. Salmonid | 1 | 0 | 0 | ||
| NOAEL Static 48Hr Acute Ceriodaphnia dubia | 1 | 0 | 0 | ||
| NOAEL Static 48Hr Acute Salvel. Salmonid | 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 ME0100498.
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, ME0100498.
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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 ME0100498 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 15, 2026.