Clean Water Act discharge permit · NPDES CT0003107
DEVON POWER, LLC, Milford, CT: NPDES CT0003107 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 28Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
DEVON POWER, LLC, held by NRG DEVON OPERATIONS, INC, holds NPDES permit CT0003107, which discharges to Housatonic Riv. EPA’s file records it issued February 5, 2007 and expiring February 28, 2012. 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 | DEVON POWER, LLC |
|---|---|
| Permittee as filed | NRG DEVON OPERATIONS, INC |
| NPDES ID | CT0003107 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | February 5, 2007 |
| Expiration date | February 28, 2012 |
| Issuing agency | CT DEP |
| Address | Milford, CT 06461 |
| Receiving water | HOUSATONIC RIV |
| Subwatershed | Housatonic River-Frontal Long Island Sound (HUC 011000051302) |
| SIC | 4911 – Electric Services |
| Other EPA IDs (FRS) | RCRA handler CTD000845248; ICIS-AIR source CT0000000900900110 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 28Pollutants on file
- 28Under a numeric limit
- 5With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 6 | 3 | 3 | January 31, 2005 | 50% over the limit |
| Zinc, total [as Zn] | 3 | 2 | 2 | October 31, 2000 | 480% over the limit |
| Oil & Grease | 6 | 1 | 1 | May 31, 2005 | 23% over the limit |
| Nickel, total [as Ni] | 4 | 1 | 1 | June 30, 2003 | 35% over the limit |
| Temperature, water deg. fahrenheit | 2 | 1 | 0 | ||
| pH | 10 | 0 | 0 | ||
| Copper, total [as Cu] | 6 | 0 | 0 | ||
| Lead, total [as Pb] | 4 | 0 | 0 | ||
| Iron, total [as Fe] | 3 | 0 | 0 | ||
| Aluminum, total [as Al] | 3 | 0 | 0 | ||
| Flow rate | 2 | 0 | 0 | ||
| Flow rate | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 0 | 0 | ||
| Nitrogen, nitrite total [as N] | 2 | 0 | 0 | ||
| Nitrogen, nitrate total [as N] | 2 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 0 | 0 | ||
| Fluoride, total [as F] | 2 | 0 | 0 | ||
| Chromium, total [as Cr] | 2 | 0 | 0 | ||
| Vanadium, total [as V] | 2 | 0 | 0 | ||
| Oxidants, total residual | 2 | 0 | 0 | ||
| Flow, maximum during 24 hr period | 2 | 0 | 0 | ||
| Flow | 2 | 0 | 0 | ||
| Hydrazine | 1 | 0 | 0 | ||
| Duration of discharge | 1 | 0 | 0 | ||
| LC50 Static 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 1 | 0 | 0 | ||
| LC50 Static 48Hr Acute Cyprinodon variegatus | 1 | 0 | 0 | ||
| Noael Statre 7Day Chronic Mysid. Bahia | 1 | 0 | 0 | ||
| Noael Statre 7Day Chronic Cyprinodon | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| December 20, 2024 | Reporting Violations - Failure to Notify | ST6 |
| December 20, 2024 | Permit Violations - Unapproved Operation | ST6 |
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 CT0003107 there.
Nearby on the register
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- Every permit record in Connecticut, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.