Clean Water Act discharge permit · NPDES CT0100536
SOUTHINGTON WPCF, Plantsville, CT: NPDES CT0100536 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 24Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
SOUTHINGTON WPCF holds NPDES permit CT0100536, which discharges to Quinnipiac River. EPA’s file records it issued March 6, 2013 and expiring March 31, 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 | SOUTHINGTON WPCF |
|---|---|
| Permittee as filed | SOUTHINGTON WPCF |
| NPDES ID | CT0100536 |
| 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 6, 2013 |
| Expiration date | March 31, 2018 |
| Issuing agency | CT DEP |
| Address | Plantsville, CT 06479 |
| Receiving water | QUINNIPIAC RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Headwaters Quinnipiac River (HUC 011000040103) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 51Pollutants on file
- 24Under a numeric limit
- 51With 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 |
|---|---|---|---|---|---|
| E. coli | 2 | 26 | 24 | July 31, 2020 | 99,999% over the limit |
| Phosphorus, total [as P] | 2 | 20 | 15 | June 30, 2023 | 90% over the limit |
| NOAEL Static 48Hr Acute D. pulex | 2 | 9 | 6 | June 30, 2026 | 27% over the limit |
| Phosphorus, Total [Avg Seasonal Load Cap] | 0 | 3 | 3 | October 31, 2020 | 390% over the limit |
| Ultraviolet light dosage | 0 | 2 | 2 | May 31, 2021 | 100% over the limit |
| Coliform, fecal general | 0 | 2 | 2 | June 30, 2005 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 10 | 1 | September 30, 2005 | 1,235% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 5 | 1 | December 31, 2008 | 4% over the limit |
| Solids, suspended percent removal | 1 | 2 | 1 | March 31, 2005 | 78% over the limit |
| Oxygen, dissolved [DO] | 0 | 2 | 1 | January 31, 2000 | 83% over the limit |
| BOD, 5-day, 20 deg. C | 0 | 15 | 0 | ||
| Solids, total suspended | 3 | 9 | 0 | ||
| Chlorine, total residual | 0 | 6 | 0 | ||
| BOD, carbonaceous [5 day, 5 C] | 3 | 4 | 0 | ||
| pH | 2 | 4 | 0 | ||
| Arsenic, sludge tot. dry wt [as As] | 1 | 4 | 0 | ||
| Beryllium, sludge, tot. dry wt [as Be] | 1 | 4 | 0 | ||
| Solids, fixed, % of total solids | 1 | 4 | 0 | ||
| Solids, volatile % of total solids | 1 | 4 | 0 | ||
| Nitrogen, nitrate total [as N] | 0 | 4 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 3 | 0 | ||
| Solids, total, percent | 1 | 3 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 1 | 3 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 1 | 3 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 1 | 3 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 1 | 3 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 1 | 3 | 0 | ||
| Copper, sludge, total, dry weight [as Cu] | 1 | 3 | 0 | ||
| Cadmium, sludge, total, dry weight [as Cd] | 1 | 3 | 0 | ||
| Nitrogen, nitrite total [as N] | 0 | 3 | 0 | ||
| Copper, total [as Cu] | 0 | 3 | 0 | ||
| Iron, total [as Fe] | 0 | 3 | 0 | ||
| Thallium, total [as Tl] | 0 | 3 | 0 | ||
| Nickel, total [as Ni] | 0 | 3 | 0 | ||
| Zinc, total [as Zn] | 0 | 3 | 0 | ||
| Aluminum, total [as Al] | 0 | 3 | 0 | ||
| Selenium, total [as Se] | 0 | 3 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 2 | 2 | 0 | ||
| Cyanide, total [as CN] | 0 | 2 | 0 | ||
| Cyanide, free [amenable to chlorination] | 0 | 2 | 0 | ||
| Arsenic, total [as As] | 0 | 2 | 0 | ||
| Beryllium, total [as Be] | 0 | 2 | 0 | ||
| Cadmium, total [as Cd] | 0 | 2 | 0 | ||
| Chromium, hexavalent [as Cr] | 0 | 2 | 0 | ||
| Chromium, total [as Cr] | 0 | 2 | 0 | ||
| Lead, total [as Pb] | 0 | 2 | 0 | ||
| Silver, total [as Ag] | 0 | 2 | 0 | ||
| Antimony, total [as Sb] | 0 | 2 | 0 | ||
| Phenols | 0 | 2 | 0 | ||
| Mercury, total [as Hg] | 0 | 2 | 0 | ||
| Carbonaceous oxygen demand, % removal | 1 | 1 | 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 CT0100536.
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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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.