Clean Water Act discharge permit · NPDES CT0030201
UNITED ALUMINUM CORPORATION, North Haven, CT: NPDES CT0030201 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
UNITED ALUMINUM CORPORATION, held by UNITED ALUMINUM, holds NPDES permit CT0030201, which discharges to Quinnipiac River/Muddy River. EPA’s file records it issued August 17, 2007 and expiring August 31, 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 | UNITED ALUMINUM CORPORATION |
|---|---|
| Permittee as filed | UNITED ALUMINUM |
| NPDES ID | CT0030201 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | August 17, 2007 |
| Expiration date | August 31, 2012 |
| Issuing agency | CT DEP |
| Address | North Haven, CT 06473 |
| Receiving water | QUINNIPIAC RIVER/MUDDY RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Muddy River (HUC 011000040104) |
| SIC | 3353 – Aluminum Sheet, Plate, And Foil |
| Other EPA IDs (FRS) | ICIS-AIR source CT0000000900904292 |
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
- 12Pollutants on file
- 11Under a numeric limit
- 6With 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 |
|---|---|---|---|---|---|
| pH, maximum | 0 | 2 | 1 | October 31, 2023 | |
| NOAEL Static 48Hr Acute D. pulex | 2 | 1 | 1 | April 30, 2019 | 4% over the limit |
| NOAEL Static 48Hr Acute Pimephales promelas | 2 | 1 | 1 | January 31, 2026 | 9% over the limit |
| Copper, total [as Cu] | 1 | 1 | 1 | July 31, 2010 | 3% over the limit |
| Flow, maximum during 24 hr period | 1 | 11 | 0 | ||
| Flow rate | 1 | 1 | 0 | ||
| Temperature, water deg. fahrenheit | 2 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Oil & Grease | 1 | 0 | 0 | ||
| Lead, total [as Pb] | 1 | 0 | 0 | ||
| Manganese, total [as Mn] | 1 | 0 | 0 | ||
| Flow | 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
- 12Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 13, 2026 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 13, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| May 14, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| May 14, 2024 | Reporting Violations - Failure to Notify | ST6 |
| May 14, 2024 | Management Practice Violations - Failure to Maintain Records | ST6 |
| May 14, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 14, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| May 14, 2024 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| February 23, 2022 | Effluent Violations - Numeric effluent violation | ST6 |
| February 23, 2022 | Reporting Violations - Failure to Notify | ST6 |
| February 23, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| February 23, 2022 | Permit Violations - Discharge Without a Valid Permit | 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 CT0030201 there.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.