Clean Water Act discharge permit · NPDES CTP000551
SIKORSKY AIRCRAFT CORPORATION, Stratford, CT: NPDES CTP000551 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 19Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
SIKORSKY AIRCRAFT CORPORATION, held by SIKORSKY AIRCRAFT DIV OF UTC, holds NPDES permit CTP000551, which discharges to Housatonic River. EPA’s file records it issued December 23, 2005 and expiring December 22, 2010. 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 | SIKORSKY AIRCRAFT CORPORATION |
|---|---|
| Permittee as filed | SIKORSKY AIRCRAFT DIV OF UTC |
| NPDES ID | CTP000551 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual industrial user permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | December 23, 2005 |
| Expiration date | December 22, 2010 |
| Issuing agency | CT DEP |
| Address | Stratford, CT 06615 |
| Receiving water | HOUSATONIC RIVER |
| Other EPA IDs (FRS) | RCRA handler CTD001449784; ICIS-AIR source CT0000000900100156 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 23Pollutants on file
- 19Under a numeric limit
- 22With a violation of any kind
- 9With 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, maximum during 24 hr period | 2 | 18 | 9 | June 30, 2014 | 723% over the limit |
| pH | 12 | 16 | 6 | December 31, 2010 | |
| Flow | 5 | 10 | 5 | September 30, 2002 | 18% over the limit |
| Flow rate | 2 | 17 | 3 | October 31, 2004 | 55% over the limit |
| Copper, total [as Cu] | 9 | 14 | 2 | May 31, 2016 | 321% over the limit |
| Lead, total [as Pb] | 9 | 12 | 2 | December 31, 2002 | 100% over the limit |
| Chromium, total [as Cr] | 4 | 10 | 2 | August 31, 2006 | 25% over the limit |
| Titanium, total [as Ti] | 4 | 9 | 1 | November 30, 2022 | 40% over the limit |
| Organics, total toxic [TTO] | 2 | 9 | 1 | June 30, 2006 | 323% over the limit |
| Cyanide, free [amenable to chlorination] | 6 | 14 | 0 | ||
| Zinc, total [as Zn] | 9 | 12 | 0 | ||
| Cyanide, total [as CN] | 4 | 8 | 0 | ||
| Chromium, hexavalent [as Cr] | 4 | 8 | 0 | ||
| Nickel, total [as Ni] | 4 | 8 | 0 | ||
| Silver, total [as Ag] | 4 | 8 | 0 | ||
| Chemical Oxygen Demand [COD] | 3 | 8 | 0 | ||
| Solids, total suspended | 7 | 6 | 0 | ||
| pH, maximum | 0 | 3 | 0 | ||
| pH, minimum | 0 | 3 | 0 | ||
| Cadmium, total [as Cd] | 4 | 2 | 0 | ||
| Oil petroleum, total recoverable | 0 | 2 | 0 | ||
| Duration of discharge | 0 | 1 | 0 | ||
| Aluminum, total [as Al] | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 19, 2026 | 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 CTP000551 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.