Clean Water Act discharge permit · NPDES CT0100200
ENFIELD POTW, TOWN OF, Enfield, CT: NPDES CT0100200 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 25Pollutants under a numeric limit
- 4Pollutants with an effluent exceedance
ENFIELD POTW, TOWN OF holds NPDES permit CT0100200, which discharges to Connecticut River. EPA’s file records it issued November 26, 2013 and expiring November 30, 2018. 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 | ENFIELD POTW, TOWN OF |
|---|---|
| Permittee as filed | ENFIELD POTW, TOWN OF |
| NPDES ID | CT0100200 |
| 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 | November 26, 2013 |
| Expiration date | November 30, 2018 |
| Issuing agency | CT DEP |
| Address | Enfield, CT 06082 |
| Receiving water | CONNECTICUT RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Freshwater Brook-Connecticut River (HUC 010802050105) |
| Program components on file | Biosolids, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 25Pollutants on file
- 25Under a numeric limit
- 24With a violation of any kind
- 4With 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 | 13 | 4 | March 31, 2010 | 66% over the limit |
| Chlorine, total residual | 2 | 9 | 4 | July 31, 2017 | 100% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 12 | 3 | March 31, 2010 | 68% over the limit |
| BOD, 5-day, percent removal | 1 | 3 | 1 | March 31, 2011 | 21% over the limit |
| Flow rate | 2 | 6 | 0 | ||
| pH | 2 | 6 | 0 | ||
| Phosphorus, total [as P] | 1 | 4 | 0 | ||
| Solids, suspended percent removal | 1 | 4 | 0 | ||
| Arsenic, total [as As] | 1 | 3 | 0 | ||
| Beryllium, total [as Be] | 1 | 3 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 3 | 0 | ||
| Solids, total, percent | 1 | 3 | 0 | ||
| Solids, fixed, % of total solids | 1 | 3 | 0 | ||
| Solids, volatile % of total solids | 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 | ||
| E. coli | 2 | 2 | 0 | ||
| Copper, sludge, total, dry weight [as Cu] | 1 | 2 | 0 | ||
| Cadmium, sludge, total, dry weight [as Cd] | 1 | 2 | 0 | ||
| NOAEL Static 48Hr Acute D. pulex | 2 | 1 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 2 | 1 | 0 | ||
| Coliform, fecal general | 2 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| April 21, 2022 | Monitoring Violations - Improper Analysis or Lab Error | ST6 |
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, CT0100200.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
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How we handle your data → Privacy
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 CT0100200 there.
Nearby on the register
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- Every permit record in Enfield, A to Z
- Discharge permits in Connecticut
- Every permit record in Connecticut, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.