Clean Water Act discharge permit · NPDES CT0030155
TILCON CONNECTICUT, INC., Newington, CT: NPDES CT0030155 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
TILCON CONNECTICUT, INC., held by TILCON CONNECTICUT INC., holds NPDES permit CT0030155, which discharges to Mattabassett River/Piper Brook. EPA’s file records it issued February 1, 1999 and expiring January 31, 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 | TILCON CONNECTICUT, INC. |
|---|---|
| Permittee as filed | TILCON CONNECTICUT INC. |
| NPDES ID | CT0030155 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | February 1, 1999 |
| Expiration date | January 31, 2004 |
| Issuing agency | CT DEP |
| Address | Newington, CT 06111 |
| Receiving water | MATTABASSETT RIVER/PIPER BROOK |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Piper Brook-Park River (HUC 010802050303) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 13Pollutants on file
- 0Under a numeric limit
- 13With a violation of any kind
- 1With 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 |
|---|---|---|---|---|---|
| pH | 0 | 5 | 3 | March 31, 2013 | |
| Flow, maximum during 24 hr period | 0 | 2 | 0 | ||
| Flow | 0 | 2 | 0 | ||
| Flow rate | 0 | 1 | 0 | ||
| Oxygen demand, chem. [low level] [COD] | 0 | 1 | 0 | ||
| Solids, total suspended | 0 | 1 | 0 | ||
| Nitrogen, nitrate total [as N] | 0 | 1 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 1 | 0 | ||
| Phosphorus, total [as P] | 0 | 1 | 0 | ||
| Copper, total [as Cu] | 0 | 1 | 0 | ||
| Lead, total [as Pb] | 0 | 1 | 0 | ||
| Zinc, total [as Zn] | 0 | 1 | 0 | ||
| Oil petroleum, total recoverable | 0 | 1 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 28, 2024 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| May 28, 2024 | Management Practice Violations - Failure to Maintain Records | ST6 |
| May 28, 2024 | 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, CT0030155.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- 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 CT0030155 there.
Nearby on the register
- Discharge permits in Newington
- Every permit record in Newington, 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.