Clean Water Act discharge permit · NPDES CTP002473
KANTHAL CORPORATION, Bethel, CT: NPDES CTP002473 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 18Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
KANTHAL CORPORATION holds NPDES permit CTP002473, which discharges to Sympaug Brook. EPA’s file records it issued April 9, 2018 and expiring April 30, 2023. 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 filed | KANTHAL CORPORATION |
|---|---|
| Permittee as filed | KANTHAL CORPORATION |
| NPDES ID | CTP002473 |
| 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 | April 9, 2018 |
| Expiration date | April 30, 2023 |
| Issuing agency | CT DEEP |
| Address | Bethel, CT 06801 |
| Receiving water | SYMPAUG BROOK |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 18Pollutants on file
- 18Under a numeric limit
- 11With a violation of any kind
- 10With 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 |
|---|---|---|---|---|---|
| Nickel, total [as Ni] | 2 | 61 | 61 | July 31, 2026 | 139% over the limit |
| Copper, total [as Cu] | 2 | 55 | 55 | December 31, 2024 | 453% over the limit |
| Zinc, total [as Zn] | 2 | 14 | 14 | December 31, 2024 | 90% over the limit |
| pH, minimum | 1 | 13 | 12 | April 30, 2025 | |
| Solids, total suspended | 2 | 7 | 6 | June 30, 2024 | 109% over the limit |
| pH, maximum | 1 | 6 | 6 | April 30, 2025 | |
| Chromium, total [as Cr] | 2 | 4 | 4 | June 30, 2024 | 88% over the limit |
| pH | 2 | 3 | 3 | October 31, 2019 | |
| Flow rate | 1 | 3 | 3 | July 31, 2021 | 22% over the limit |
| Flow, maximum during 24 hr period | 1 | 2 | 1 | January 31, 2021 | 8% over the limit |
| Flow | 1 | 1 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| Cyanide, total [as CN] | 2 | 0 | 0 | ||
| Iron, total [as Fe] | 2 | 0 | 0 | ||
| Silver, total [as Ag] | 2 | 0 | 0 | ||
| Oil petroleum, total recoverable | 2 | 0 | 0 | ||
| Mercury, total [as Hg] | 2 | 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
- 13Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 2, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| July 2, 2026 | Management Practice Violations - Failure to Maintain Records | ST6 |
| July 2, 2026 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| July 2, 2026 | Reporting Violations - Failure to Notify | ST6 |
| July 2, 2026 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 2, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| May 21, 2025 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| May 21, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| August 8, 2024 | Permit Violations - Violation Specified in Comment | ST6 |
| August 8, 2024 | Management Practice Violations - Failure to Maintain Records | ST6 |
| August 8, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| August 8, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| August 8, 2024 | Reporting Violations - Failure to Notify | 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 CTP002473 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.