Clean Water Act discharge permit · NPDES CT0101087
CITY OF STAMFORD WPCF, Stamford, CT: NPDES CT0101087 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 27Pollutants under a numeric limit
- 12Pollutants with an effluent exceedance
CITY OF STAMFORD WPCF, held by CITY OF STAMFORD, holds NPDES permit CT0101087, which discharges to Stamford Harbor. EPA’s file records it issued June 25, 2013 and expiring June 30, 2018. 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 | CITY OF STAMFORD WPCF |
|---|---|
| Permittee as filed | CITY OF STAMFORD |
| NPDES ID | CT0101087 |
| 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 25, 2013 |
| Expiration date | June 30, 2018 |
| Issuing agency | CT DEP |
| Address | Stamford, CT 06902 |
| Receiving water | STAMFORD HARBOR |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Fivemile River (HUC 011000060404) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 32Pollutants on file
- 27Under a numeric limit
- 15With 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 | 86 | 85 | September 30, 2021 | 1,020% over the limit |
| Ultraviolet light dosage | 1 | 79 | 79 | May 31, 2026 | 100% over the limit |
| Solids, suspended percent removal | 1 | 52 | 52 | September 30, 2011 | 513% over the limit |
| Chlorine, total residual | 0 | 44 | 44 | March 31, 2003 | 147% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 38 | 38 | March 31, 2010 | 54% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 15 | 15 | May 31, 2014 | 470% over the limit |
| Coliform, fecal general | 3 | 15 | 15 | January 31, 2014 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 3 | 8 | 7 | October 31, 2004 | 615% over the limit |
| pH | 2 | 6 | 5 | September 30, 2001 | |
| BOD, 5-day, percent removal | 1 | 4 | 4 | March 31, 2010 | 93% over the limit |
| Oxygen, dissolved [DO] | 0 | 3 | 3 | February 28, 2003 | 3% over the limit |
| Enterococci | 4 | 1 | 1 | September 30, 2023 | 99% over the limit |
| Coliform, fecal - % samples exceeding limit | 1 | 1 | 0 | ||
| Turbidity | 0 | 1 | 0 | ||
| Nitrogen, nitrite total [as N] | 0 | 1 | 0 | ||
| Flow rate | 2 | 0 | 0 | ||
| NOAEL Static 48Hr Acute D. pulex | 2 | 0 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 2 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES CT0101087.
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
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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 CT0101087 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.