Clean Water Act discharge permit · NPDES CT0101249
NORWALK WPCF, East Norwalk, CT: NPDES CT0101249 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 28Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
NORWALK WPCF holds NPDES permit CT0101249, which discharges to Norwalk River. EPA’s file records it issued March 24, 2014 and expiring March 31, 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 | NORWALK WPCF |
|---|---|
| Permittee as filed | NORWALK WPCF |
| NPDES ID | CT0101249 |
| 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 | March 24, 2014 |
| Expiration date | March 31, 2019 |
| Issuing agency | CT DEP |
| Address | East Norwalk, CT 06855 |
| Receiving water | NORWALK RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Norwalk River-Frontal Norwalk Harbor (HUC 011000060202) |
| Program components on file | Biosolids, CSO, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | ICIS-AIR source CT0000000900184475 |
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
- 30Pollutants on file
- 28Under a numeric limit
- 11With a violation of any kind
- 9With 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 | 1 | 59 | 59 | October 31, 2022 | 657% over the limit |
| Solids, total suspended | 3 | 37 | 37 | July 31, 2026 | 2,425% over the limit |
| Coliform, fecal general | 3 | 21 | 21 | August 31, 2006 | 99,999% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 19 | 19 | July 31, 2026 | 460% over the limit |
| Enterococci | 2 | 14 | 10 | March 31, 2024 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 8 | 8 | September 30, 2011 | 23% over the limit |
| pH | 2 | 4 | 3 | August 31, 2004 | |
| Solids, suspended percent removal | 1 | 2 | 2 | March 31, 2003 | 400% over the limit |
| BOD, 5-day, percent removal | 1 | 1 | 1 | March 31, 2002 | 80% over the limit |
| Flow rate | 1 | 2 | 0 | ||
| Duration | 0 | 1 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| NOAEL Static 48Hr Acute D. pulex | 2 | 0 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 2 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 0 | 0 | ||
| Phosphorus, total [as P] | 1 | 0 | 0 | ||
| Coliform, fecal - % samples exceeding limit | 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 CT0101249.
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, CT0101249.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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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 CT0101249 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.