Clean Water Act discharge permit · NPDES CT0100684
WESTPORT WPCF, Westport, CT: NPDES CT0100684 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 50Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
WESTPORT WPCF holds NPDES permit CT0100684, which discharges to Saugatuck River. EPA’s file records it issued April 10, 2014 and expiring April 30, 2019. 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 | WESTPORT WPCF |
|---|---|
| Permittee as filed | WESTPORT WPCF |
| NPDES ID | CT0100684 |
| 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 | April 10, 2014 |
| Expiration date | April 30, 2019 |
| Issuing agency | CT DEP |
| Address | Westport, CT 06880 |
| Receiving water | SAUGATUCK RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Outlet Saugatuck River-Frontal Long Island Sound (HUC 011000060103) |
| Program components on file | Biosolids, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | ICIS-AIR source CT0000000900108877 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 54Pollutants on file
- 50Under a numeric limit
- 15With a violation of any kind
- 10With 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 | 28 | 28 | March 31, 2007 | 833% over the limit |
| Solids, settleable | 0 | 11 | 11 | March 31, 2001 | 6,567% over the limit |
| pH | 2 | 11 | 9 | March 31, 2009 | |
| BOD, 5-day, percent removal | 1 | 6 | 6 | October 31, 2005 | 144% over the limit |
| Solids, total suspended | 5 | 17 | 5 | March 31, 2006 | 654% over the limit |
| BOD, 5-day, 20 deg. C | 5 | 18 | 4 | October 31, 2005 | 620% over the limit |
| Coliform, fecal general | 3 | 4 | 4 | May 31, 2003 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 4 | 4 | March 31, 2010 | 20% over the limit |
| Solids, suspended percent removal | 1 | 3 | 3 | April 30, 2004 | 137% over the limit |
| Ultraviolet light dosage | 1 | 1 | 1 | July 31, 2021 | 17% over the limit |
| Coliform, fecal - % samples exceeding limit | 1 | 32 | 0 | ||
| Enterococci | 2 | 31 | 0 | ||
| Nitrogen, total [as N] | 0 | 3 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 1 | 0 | ||
| Pass/Fail Static 48Hr Acute D. Pulex | 0 | 1 | 0 | ||
| Flow rate | 2 | 0 | 0 | ||
| Nitrogen, nitrite total [as N] | 2 | 0 | 0 | ||
| Nitrogen, nitrate total [as N] | 2 | 0 | 0 | ||
| Phosphorus, total [as P] | 2 | 0 | 0 | ||
| Cyanide, total [as CN] | 2 | 0 | 0 | ||
| Cyanide, free [amenable to chlorination] | 2 | 0 | 0 | ||
| Arsenic, total [as As] | 2 | 0 | 0 | ||
| Beryllium, total [as Be] | 2 | 0 | 0 | ||
| Cadmium, total [as Cd] | 2 | 0 | 0 | ||
| Chromium, hexavalent [as Cr] | 2 | 0 | 0 | ||
| Chromium, total [as Cr] | 2 | 0 | 0 | ||
| Copper, total [as Cu] | 2 | 0 | 0 | ||
| Iron, total [as Fe] | 2 | 0 | 0 | ||
| Lead, total [as Pb] | 2 | 0 | 0 | ||
| Thallium, total [as Tl] | 2 | 0 | 0 | ||
| Nickel, total [as Ni] | 2 | 0 | 0 | ||
| Silver, total [as Ag] | 2 | 0 | 0 | ||
| Zinc, total [as Zn] | 2 | 0 | 0 | ||
| Antimony, total [as Sb] | 2 | 0 | 0 | ||
| Aluminum, total [as Al] | 2 | 0 | 0 | ||
| Selenium, total [as Se] | 2 | 0 | 0 | ||
| Phenols | 2 | 0 | 0 | ||
| Mercury, total [as Hg] | 2 | 0 | 0 | ||
| NOAEL Static 48Hr Acute D. pulex | 2 | 0 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 2 | 0 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 0 | 0 | ||
| Phosphorus, Total | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES CT0100684.
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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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.