Clean Water Act discharge permit · NPDES CT0101656
HOUSATONIC WPCF, Milford, CT: NPDES CT0101656 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 25Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
HOUSATONIC WPCF holds NPDES permit CT0101656, which discharges to Housatonic River. EPA’s file records it issued July 11, 2013 and expiring July 31, 2018. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | HOUSATONIC WPCF |
|---|---|
| Permittee as filed | HOUSATONIC WPCF |
| NPDES ID | CT0101656 |
| 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 | July 11, 2013 |
| Expiration date | July 31, 2018 |
| Issuing agency | CT DEP |
| Address | Milford, CT 06460 |
| Receiving water | HOUSATONIC RIVER |
| Subwatershed | Housatonic River-Frontal Long Island Sound (HUC 011000051302) |
| Program components on file | Biosolids, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 31Pollutants on file
- 25Under a numeric limit
- 31With a violation of any kind
- 12With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 3 | 69 | 58 | January 31, 2024 | 1,034% over the limit |
| Solids, suspended percent removal | 1 | 55 | 51 | December 31, 2023 | 4,053% over the limit |
| BOD, 5-day, percent removal | 1 | 33 | 29 | April 30, 2018 | 817% over the limit |
| pH | 2 | 34 | 28 | July 31, 2023 | |
| Flow, in conduit or thru treatment plant | 0 | 27 | 27 | June 30, 2013 | 53% over the limit |
| Chlorine, total residual | 0 | 19 | 19 | August 31, 2011 | 3,900% over the limit |
| Coliform, fecal - % samples exceeding limit | 1 | 19 | 16 | October 31, 2025 | 4,880% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 24 | 15 | July 31, 2019 | 398% over the limit |
| Coliform, fecal general | 2 | 20 | 13 | January 31, 2017 | 99,999% over the limit |
| Enterococci | 2 | 14 | 8 | May 31, 2026 | 486% over the limit |
| Ultraviolet light dosage | 1 | 7 | 4 | September 30, 2021 | 71% over the limit |
| NOAEL Static 48Hr Acute D. pulex | 2 | 6 | 3 | November 30, 2025 | 67% over the limit |
| Solids, volatile % of total solids | 1 | 16 | 0 | ||
| Solids, total, percent | 1 | 15 | 0 | ||
| Solids, fixed, % of total solids | 1 | 15 | 0 | ||
| Arsenic, sludge tot. dry wt [as As] | 1 | 13 | 0 | ||
| Beryllium, sludge, tot. dry wt [as Be] | 1 | 13 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 1 | 13 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 1 | 13 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 1 | 13 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 1 | 13 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 1 | 13 | 0 | ||
| Copper, sludge, total, dry weight [as Cu] | 1 | 13 | 0 | ||
| Cadmium, sludge, total, dry weight [as Cd] | 1 | 13 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 12 | 0 | ||
| Flow rate | 2 | 6 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 2 | 3 | 0 | ||
| Nitrogen, total [as N] | 0 | 2 | 0 | ||
| Phosphorus, total [as P] | 0 | 1 | 0 | ||
| Pass/Fail Static 48Hr Acute D. Pulex | 0 | 1 | 0 | ||
| Pass/Fail Static 4 Day Chronic Pimephales Promelas | 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 |
|---|---|---|
| September 22, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| September 26, 2018 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
| September 26, 2018 | Management Practice Violations - Best Management Practice Deficiencies | 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.
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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 CT0101656 there.
Nearby on the register
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- Every permit record in Connecticut, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.