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Clean Water Act discharge permit · NPDES CT0001180

SUMMIT CORPORATION OF AMERICA, Thomaston, CT: NPDES CT0001180 discharge permit, effluent exceedances, inspections, penalties

SUMMIT CORPORATION OF AMERICA holds NPDES permit CT0001180, which discharges to Naugatuck River. EPA’s file records it issued December 21, 2007 and expiring December 31, 2012. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedSUMMIT CORPORATION OF AMERICA
Permittee as filedSUMMIT CORPORATION OF AMERICA
NPDES IDCT0001180
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
IssuedDecember 21, 2007
Expiration dateDecember 31, 2012
Issuing agencyCT DEP
AddressThomaston, CT 06787
Receiving waterNAUGATUCK RIVER
SubwatershedNorthfield Brook-Naugatuck River (HUC 011000051105)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

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
pH211327July 31, 2014
Silver, total [as Ag]613822September 30, 2023200% over the limit
Cyanide, total [as CN]61238January 31, 2024100% over the limit
NOAEL Static 48Hr Acute D. pulex266July 31, 2016100% over the limit
Lead, total [as Pb]101315November 30, 201587% over the limit
Nickel, total [as Ni]8985July 31, 201441% over the limit
%Surv Static 48Hr Acute Daphnia Pulex255July 31, 201684% over the limit
BOD, 5-day, 20 deg. C2233August 31, 2023100% over the limit
Chromium, total [as Cr]4123February 29, 2024111% over the limit
Zinc, total [as Zn]111182July 31, 202321% over the limit
Nitrogen, total [as N]3572December 31, 201213% over the limit
Cyanide, free [amenable to chlorination]6182January 31, 201422% over the limit
Fluoride, total [as F]472July 31, 201518% over the limit
Nitrogen, ammonia total [as N]462March 31, 201016% over the limit
LC50 Static 48Hr Acute D. Pulex232December 31, 202476% over the limit
NOAEL Static 48Hr Acute Pimephales promelas222April 30, 201569% over the limit
Copper, total [as Cu]111151May 31, 200733% over the limit
LC50 Static 48Hr Acute Pimephales promelas211December 31, 202410% over the limit
% Survival Static 48Hr Acute Pimephales promelas211January 31, 2015100% over the limit
Chloroform3580
Flow rate1560
Flow, maximum during 24 hr period1500
Gold, total [as Au]4490
Flow1470
Cadmium, total [as Cd]6280
Aluminum, total [as Al]4260
Chlorine, total residual780
Tin, total [as Sn]480
Oil & Grease470
Iron, total [as Fe]470
Indium350
Solids, total suspended440
Palladium, total [as Pd]340
Organics, total toxic [TTO]130
Nitrogen, Kjeldahl, total [as N]320
Surfactants [MBAS]320
Duration of discharge120
Nitrogen, nitrite total [as N]310
Nitrogen, nitrate total [as N]310
Pass/Fail Static 48Hr Acute D. Pulex010
Pass/Fail Static 96 Hr Acute Pimephales Promelas010

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
October 16, 2024Reporting Violations - Improper/ Incorrect ReportingST6
October 16, 2024Monitoring Violations - Invalid/Unrepresentative SampleST6
October 16, 2024Effluent Violations - Industrial SpillST6
October 16, 2024Management Practice Violations - Improper Operation and MaintenanceST6
October 16, 2024Effluent Violations - Numeric effluent violationST6
May 8, 2024Effluent Violations - Numeric effluent violationST6
May 8, 2024Effluent Violations - Industrial SpillST6
May 8, 2024Effluent Violations - Unapproved BypassST6
May 8, 2024Management Practice Violations - Improper Operation and MaintenanceST6
November 6, 2023Effluent Violations - Numeric effluent violationST6
November 6, 2023Management Practice Violations - Improper Operation and MaintenanceST6
November 6, 2023Reporting Violations - Improper/ Incorrect ReportingST6
November 6, 2023Management Practice Violations - Failure to Maintain RecordsST6
November 6, 2023Permit Violations - Violation Specified in CommentST6
November 6, 2023Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)ST6
December 28, 2021Reporting Violations - Improper/ Incorrect ReportingST6

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, CT0001180.

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  • One state — $4,990/year
  • The whole register — $18,000/year

How we handle your data → Privacy

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 CT0001180 there.

Nearby on the register

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