Clean Water Act discharge permit · NPDES CTP001930
MIRROR POLISHING & PLATING CO, Waterbury, CT: NPDES CTP001930 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 16Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
MIRROR POLISHING & PLATING CO holds NPDES permit CTP001930, which discharges to Naugatuck River. EPA’s file records it issued April 17, 2012 and expiring April 30, 2017. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | MIRROR POLISHING & PLATING CO |
|---|---|
| Permittee as filed | MIRROR POLISHING & PLATING CO |
| NPDES ID | CTP001930 |
| 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 17, 2012 |
| Expiration date | April 30, 2017 |
| Issuing agency | CT DEP |
| Address | Waterbury, CT 06721 |
| Receiving water | NAUGATUCK RIVER |
| Receiving water impaired | 303(D) Listed |
| Other EPA IDs (FRS) | RCRA handler CTD001166263; ICIS-AIR source CT0000000900908694 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 18Pollutants on file
- 16Under a numeric limit
- 16With 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 |
|---|---|---|---|---|---|
| Chromium, total [as Cr] | 2 | 48 | 12 | October 31, 2024 | 2,620% over the limit |
| Copper, total [as Cu] | 2 | 42 | 6 | February 28, 2022 | 282% over the limit |
| pH | 2 | 62 | 4 | June 30, 2007 | |
| Chromium, hexavalent [as Cr] | 2 | 38 | 2 | January 31, 2011 | 150% over the limit |
| Zinc, total [as Zn] | 2 | 37 | 0 | ||
| Nickel, total [as Ni] | 2 | 36 | 0 | ||
| pH, minimum | 1 | 25 | 0 | ||
| pH, maximum | 1 | 24 | 0 | ||
| Oil petroleum, total recoverable | 2 | 23 | 0 | ||
| Flow, maximum during 24 hr period | 1 | 21 | 0 | ||
| Flow | 1 | 20 | 0 | ||
| Organics, total toxic [TTO] | 1 | 17 | 0 | ||
| Lead, total [as Pb] | 2 | 16 | 0 | ||
| Cyanide, free [amenable to chlorination] | 0 | 10 | 0 | ||
| Flow rate | 0 | 6 | 0 | ||
| Cadmium, total [as Cd] | 2 | 4 | 0 | ||
| Cyanide, total [as CN] | 2 | 0 | 0 | ||
| Silver, total [as Ag] | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| March 25, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| December 31, 2025 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| December 31, 2025 | Permit Violations - Failure to Submit Timely Permit Renewal Application | ST6 |
| October 26, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| October 25, 2024 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| November 9, 2023 | Reporting Violations - Improper/ Incorrect Reporting | 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
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, CTP001930.
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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 CTP001930 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.