Clean Water Act discharge permit · NPDES CT0100617
WALLINGFORD WPCF, Wallingford, CT: NPDES CT0100617 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 29Pollutants under a numeric limit
- 15Pollutants with an effluent exceedance
WALLINGFORD WPCF holds NPDES permit CT0100617, which discharges to Quinnipiac River. EPA’s file records it issued April 25, 2013 and expiring April 30, 2018. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | WALLINGFORD WPCF |
|---|---|
| Permittee as filed | WALLINGFORD WPCF |
| NPDES ID | CT0100617 |
| 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 25, 2013 |
| Expiration date | April 30, 2018 |
| Issuing agency | CT DEP |
| Address | Wallingford, CT 06492 |
| Receiving water | QUINNIPIAC RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Outlet Quinnipiac River (HUC 011000040105) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 32Pollutants on file
- 29Under a numeric limit
- 18With a violation of any kind
- 15With 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 |
|---|---|---|---|---|---|
| Aluminum, total [as Al] | 0 | 34 | 30 | April 30, 2025 | 336% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 14 | 11 | March 31, 2013 | 41% over the limit |
| Oxygen, dissolved [DO] | 1 | 11 | 11 | September 30, 2021 | 13% over the limit |
| E. coli | 2 | 10 | 10 | June 30, 2024 | 1,668% over the limit |
| Solids, total suspended | 3 | 9 | 9 | March 31, 2025 | 1,080% over the limit |
| Coliform, fecal general | 2 | 7 | 7 | June 30, 2008 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 6 | 6 | September 30, 2024 | 43% over the limit |
| Solids, suspended percent removal | 1 | 5 | 4 | March 31, 2011 | 187% over the limit |
| BOD, 5-day, percent removal | 1 | 4 | 3 | March 31, 2010 | 80% over the limit |
| Oxygen demand, ultimate | 6 | 3 | 3 | June 30, 2024 | 35% over the limit |
| Phosphorus, total [as P] | 2 | 3 | 3 | July 31, 2023 | 23% over the limit |
| pH | 2 | 3 | 2 | November 30, 2013 | |
| BOD, 5-day, 20 deg. C | 3 | 2 | 2 | March 31, 2010 | 302% over the limit |
| NOAEL Static 48Hr Acute Pimephales promelas | 2 | 1 | 1 | December 31, 2016 | 29% over the limit |
| Ultraviolet light dosage | 0 | 1 | 1 | May 31, 2025 | 51% over the limit |
| Nitrogen, total [as N] | 1 | 1 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 1 | 0 | ||
| Beryllium, sludge, tot. dry wt [as Be] | 1 | 1 | 0 | ||
| Flow | 2 | 0 | 0 | ||
| NOAEL Static 48Hr Acute D. pulex | 2 | 0 | 0 | ||
| Phosphate, ortho [as PO4] | 1 | 0 | 0 | ||
| Arsenic, sludge tot. dry wt [as As] | 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 CT0100617.
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.
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 CT0100617 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.