Clean Water Act discharge permit · NPDES CT0100552
SUFFIELD WPCF, Suffield, CT: NPDES CT0100552 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 25Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
SUFFIELD WPCF holds NPDES permit CT0100552, which discharges to Stony Brook. EPA’s file records it issued February 17, 2012 and expiring February 28, 2017. 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 | SUFFIELD WPCF |
|---|---|
| Permittee as filed | SUFFIELD WPCF |
| NPDES ID | CT0100552 |
| 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 | February 17, 2012 |
| Expiration date | February 28, 2017 |
| Issuing agency | CT DEP |
| Address | Suffield, CT 06078 |
| Receiving water | STONY BROOK |
| Subwatershed | Freshwater Brook-Connecticut River (HUC 010802050105) |
| Program components on file | Biosolids, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | ICIS-AIR source CT0000000900309236 |
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
- 32Pollutants on file
- 25Under a numeric limit
- 19With 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 |
|---|---|---|---|---|---|
| Flow rate | 2 | 42 | 36 | January 31, 2012 | 72,567% over the limit |
| Chlorine, total residual | 0 | 17 | 16 | September 30, 2005 | 160% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 10 | 10 | January 31, 2005 | 54% over the limit |
| Coliform, fecal general | 2 | 13 | 8 | August 31, 2015 | 99,999% over the limit |
| Solids, total suspended | 3 | 14 | 7 | September 30, 2011 | 1,380% over the limit |
| pH | 2 | 9 | 4 | September 30, 2021 | |
| E. coli | 0 | 4 | 4 | May 31, 2026 | 490% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 11 | 2 | June 30, 2006 | 446% over the limit |
| Solids, suspended percent removal | 1 | 9 | 2 | June 30, 2006 | 327% over the limit |
| Ultraviolet light dosage | 1 | 4 | 2 | September 30, 2021 | 100% over the limit |
| BOD, 5-day, percent removal | 1 | 6 | 0 | ||
| Nitrogen, total [as N] | 1 | 3 | 0 | ||
| NOAEL Static 48Hr Acute D. pulex | 2 | 2 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 2 | 2 | 0 | ||
| Ultraviolet light intensity | 1 | 2 | 0 | ||
| Phosphorus, total [as P] | 0 | 1 | 0 | ||
| Beryllium, total [as Be] | 0 | 1 | 0 | ||
| Iron, total [as Fe] | 0 | 1 | 0 | ||
| Aluminum, total [as Al] | 0 | 1 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| November 5, 2019 | Reporting Violations - Improper/ Incorrect Reporting | 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
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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 CT0100552 there.
Nearby on the register
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- Every permit record in Connecticut, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.