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Clean Water Act discharge permit · NPDES CT0001376

UNITED TECHNOLOGIES CORPORATION, PRATT AND WHITNEY DIVISION, East Hartford, CT: NPDES CT0001376 discharge permit, effluent exceedances, inspections, penalties

UNITED TECHNOLOGIES CORPORATION, PRATT AND WHITNEY DIVISION, held by UNITED TECHNOLOGIES, PRATT &, holds NPDES permit CT0001376, which discharges to Connecticut River. EPA’s file records it issued September 29, 2000 and expiring September 28, 2005. 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 filedUNITED TECHNOLOGIES CORPORATION, PRATT AND WHITNEY DIVISION
Permittee as filedUNITED TECHNOLOGIES, PRATT &
NPDES IDCT0001376
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
IssuedSeptember 29, 2000
Expiration dateSeptember 28, 2005
Issuing agencyCT DEP
AddressEast Hartford, CT 06108
Receiving waterCONNECTICUT RIVER
Receiving water impaired303(D) Listed
SubwatershedSalmon Brook (HUC 010802050503)
SIC3724 – Aircraft Engines And Engine Parts
Other EPA IDs (FRS)RCRA handler CTD990672081; ICIS-AIR source CT0000000900300082

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

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Copper, total [as Cu]444241July 31, 20104,014% over the limit
pH241412January 31, 2009
Solids, total suspended391210January 31, 20096,150% over the limit
Zinc, total [as Zn]4387July 31, 2010332% over the limit
Chlorine, total residual37106July 31, 2010270% over the limit
Cadmium, total [as Cd]2044July 31, 2010193% over the limit
Tetrachloroethylene2044July 31, 2010272% over the limit
Nitrogen, ammonia total [as N]2733July 31, 201043,719% over the limit
Chromium, hexavalent [as Cr]1633May 31, 2009610% over the limit
Flow rate1032March 31, 200633% over the limit
NOAEL Static 48Hr Acute D. pulex022July 31, 2010100% over the limit
1,1-Dichloroethylene3411July 31, 20103% over the limit
Flow, maximum during 24 hr period1011April 30, 200615% over the limit
NOAEL Static 48Hr Acute Pimephales promelas011July 31, 201091% over the limit
Nitrogen, nitrate total [as N]040
pH, maximum020
pH, minimum020
Oil & Grease2210
Aluminum, total [as Al]1310
Temperature, water deg. fahrenheit1210
Beryllium, total [as Be]1210
Cyanide, free [amenable to chlorination]510
Lead, total [as Pb]510
BOD, 5-day, 20 deg. C410
Fluoride, total [as F]410
LC50 Static 48Hr Acute D. Pulex010
Chromium, total [as Cr]3100
Nickel, total [as Ni]3000
Flow2100
Pass/Fail Static 48Hr Acute D. Pulex2000
Pass/Fail Static 96 Hr Acute Pimephales Promelas2000
Trichloroethylene1500
Silver, total [as Ag]1300
Cyanide, total [as CN]1100
Iron, total [as Fe]1100
Arsenic, total [as As]900
Mercury, total [as Hg]800
Duration of discharge700
Titanium, total [as Ti]600
Oxygen demand, chem. [low level] [COD]400
Selenium, total [as Se]400
Surfactants [MBAS]400
1,1,1-Trichloroethane300
p-Cresol300
Magnesium, total [as Mg]100
Boron, total [as B]100
Dichlorobromomethane100
Di[2-ethylhexyl] phthalate [DEHP]100
Organics, total toxic [TTO]100
Acetone100

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

DateWhat EPA recordedAgency
March 11, 2026Management Practice Violations - Failure to Maintain RecordsST6
March 11, 2026Permit Violations - Violation Specified in CommentST6
March 11, 2026Monitoring Violations - Improper Analysis or Lab ErrorST6
March 11, 2026Reporting Violations - Improper/ Incorrect ReportingST6
November 8, 2023Monitoring Violations - Improper Analysis or Lab ErrorST6
September 12, 2019Permit Violations - Violation Specified in CommentST6

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.

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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

What this page shows

This public-records page covers Clean Water Act discharge permit NPDES CT0001376, held by UNITED TECHNOLOGIES CORPORATION, PRATT AND WHITNEY DIVISION of East Hartford, CT, which discharges to the Connecticut River. The page lists 44 as the discharger class, 14 pollutants under a numeric limit, and 14 pollutants with an effluent exceedance.