Clean Water Act discharge permit · NPDES CT0101591
WINDSOR LOCKS WPCF, Windsor Locks, CT: NPDES CT0101591 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 26Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
WINDSOR LOCKS WPCF holds NPDES permit CT0101591, which discharges to Connecticut River. EPA’s file records it issued June 5, 2013 and expiring June 30, 2018. 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 | WINDSOR LOCKS WPCF |
|---|---|
| Permittee as filed | WINDSOR LOCKS WPCF |
| NPDES ID | CT0101591 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | June 5, 2013 |
| Expiration date | June 30, 2018 |
| Issuing agency | CT DEP |
| Address | Windsor Locks, CT 06096 |
| Receiving water | CONNECTICUT RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Freshwater Brook-Connecticut River (HUC 010802050105) |
| Other EPA IDs (FRS) | RCRA handler CTR000004267; ICIS-AIR source CT0000000900309155 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 28Pollutants on file
- 26Under a numeric limit
- 8With a violation of any kind
- 8With 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 |
|---|---|---|---|---|---|
| Chlorine, total residual | 2 | 66 | 63 | December 31, 2021 | 99% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 8 | 8 | June 30, 2013 | 32% over the limit |
| Solids, suspended percent removal | 1 | 7 | 7 | November 30, 2011 | 140% over the limit |
| E. coli | 2 | 5 | 5 | July 31, 2026 | 323% over the limit |
| Solids, total suspended | 3 | 3 | 3 | February 28, 2002 | 203% over the limit |
| Carbonaceous oxygen demand, % removal | 1 | 3 | 3 | November 30, 2011 | 187% over the limit |
| BOD, carbonaceous [5 day, 5 C] | 3 | 1 | 1 | April 30, 2001 | 5% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 1 | 1 | August 31, 2020 | 114% over the limit |
| Flow rate | 2 | 0 | 0 | ||
| pH | 2 | 0 | 0 | ||
| Coliform, fecal general | 2 | 0 | 0 | ||
| NOAEL Static 48Hr Acute D. pulex | 2 | 0 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| Phosphorus, total [as P] | 1 | 0 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 0 | 0 | ||
| Arsenic, sludge tot. dry wt [as As] | 1 | 0 | 0 | ||
| Beryllium, sludge, tot. dry wt [as Be] | 1 | 0 | 0 | ||
| Solids, total, percent | 1 | 0 | 0 | ||
| Solids, fixed, % of total solids | 1 | 0 | 0 | ||
| Solids, volatile % of total solids | 1 | 0 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 1 | 0 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 1 | 0 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 1 | 0 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 1 | 0 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 1 | 0 | 0 | ||
| Copper, sludge, total, dry weight [as Cu] | 1 | 0 | 0 | ||
| Cadmium, sludge, total, dry weight [as Cd] | 1 | 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
- 4Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| November 9, 2023 | Effluent Violations - Narrative Effluent Violation | ST6 |
| November 9, 2023 | Monitoring Violations - Analysis not Conducted | ST6 |
| November 9, 2023 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| November 9, 2023 | 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
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, CT0101591.
Start the watch
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- 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 CT0101591 there.
Nearby on the register
- Discharge permits in Windsor Locks
- Every permit record in Windsor Locks, 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.