Clean Water Act discharge permit · NPDES CT0100234
GREENWICH WPCF, Greenwich, CT: NPDES CT0100234 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 49Pollutants under a numeric limit
- 11Pollutants with an effluent exceedance
GREENWICH WPCF holds NPDES permit CT0100234, which discharges to Greenwich Harbor. EPA’s file records it issued April 16, 2014 and expiring April 30, 2019. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | GREENWICH WPCF |
|---|---|
| Permittee as filed | GREENWICH WPCF |
| NPDES ID | CT0100234 |
| 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 16, 2014 |
| Expiration date | April 30, 2019 |
| Issuing agency | CT DEP |
| Address | Greenwich, CT 06830 |
| Receiving water | GREENWICH HARBOR |
| Receiving water impaired | 303(D) Listed |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 52Pollutants on file
- 49Under a numeric limit
- 14With a violation of any kind
- 11With 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 | 5 | 43 | 43 | January 31, 2019 | 2,466% over the limit |
| Coliform, fecal general | 3 | 48 | 32 | November 30, 2018 | 99,999% over the limit |
| Chlorine, total residual | 2 | 28 | 28 | January 31, 2007 | 100% over the limit |
| Ultraviolet light dosage | 1 | 24 | 24 | August 31, 2025 | 100% over the limit |
| BOD, 5-day, 20 deg. C | 5 | 21 | 20 | January 31, 2019 | 664% over the limit |
| BOD, 5-day, percent removal | 1 | 19 | 19 | January 31, 2019 | 173% over the limit |
| Solids, suspended percent removal | 1 | 17 | 17 | January 31, 2019 | 493% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 13 | 13 | June 30, 2013 | 24% over the limit |
| Enterococci | 2 | 42 | 10 | September 30, 2021 | 99,999% over the limit |
| Coliform, fecal - % samples exceeding limit | 1 | 7 | 7 | July 31, 2019 | 130% over the limit |
| Solids, settleable | 0 | 2 | 2 | November 30, 2002 | 2,567% over the limit |
| Phosphorus, total [as P] | 3 | 1 | 0 | ||
| pH | 2 | 1 | 0 | ||
| Pass/Fail Static 48Hr Acute D. Pulex | 0 | 1 | 0 | ||
| Flow rate | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 0 | 0 | ||
| Nitrogen, nitrite total [as N] | 2 | 0 | 0 | ||
| Nitrogen, nitrate total [as N] | 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 | ||
| 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 CT0100234.
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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 CT0100234 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.