Clean Water Act discharge permit · NPDES CTP000656
PORCELEN, LIMITED CONNECTICUT, LLC, Hamden, CT: NPDES CTP000656 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 12Pollutants under a numeric limit
- 2Pollutants with an effluent exceedance
PORCELEN, LIMITED CONNECTICUT, LLC, held by PORCELEN LIMITED LLC, holds NPDES permit CTP000656, which discharges to New Haven Harbor. EPA’s file records it issued July 20, 1999 and expiring July 19, 2004. 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 | PORCELEN, LIMITED CONNECTICUT, LLC |
|---|---|
| Permittee as filed | PORCELEN LIMITED LLC |
| NPDES ID | CTP000656 |
| 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 | July 20, 1999 |
| Expiration date | July 19, 2004 |
| Issuing agency | CT DEP |
| Address | Hamden, CT 06514 |
| Receiving water | NEW HAVEN HARBOR |
| Other EPA IDs (FRS) | RCRA handler CTD041205949; ICIS-AIR source CT0000000900900090 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 13Pollutants on file
- 12Under a numeric limit
- 13With a violation of any kind
- 2With 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 | 34 | 7 | December 31, 2018 | 270% over the limit |
| Chromium, hexavalent [as Cr] | 2 | 31 | 5 | August 31, 2018 | 140% over the limit |
| Solids, total suspended | 0 | 23 | 0 | ||
| pH | 2 | 22 | 0 | ||
| Copper, total [as Cu] | 2 | 22 | 0 | ||
| Lead, total [as Pb] | 2 | 22 | 0 | ||
| Zinc, total [as Zn] | 2 | 22 | 0 | ||
| Flow rate | 1 | 11 | 0 | ||
| Flow, maximum during 24 hr period | 1 | 11 | 0 | ||
| Flow | 1 | 11 | 0 | ||
| Organics, total toxic [TTO] | 1 | 11 | 0 | ||
| Cyanide, free [amenable to chlorination] | 1 | 4 | 0 | ||
| Cadmium, total [as Cd] | 2 | 2 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| October 31, 2024 | Monitoring Violations - Analysis not Conducted | ST6 |
| October 1, 2024 | Monitoring Violations - Analysis not Conducted | 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, CTP000656.
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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 CTP000656 there.
Nearby on the register
- Discharge permits in Hamden
- Every permit record in Hamden, A to Z
- Discharge permits in Connecticut
- Every permit record in Connecticut, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.