Clean Water Act discharge permit · NPDES CT0020800
BRUNSWICK SCHOOL, INC., Greenwich, CT: NPDES CT0020800 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 22Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
BRUNSWICK SCHOOL, INC., held by HIGH TOWER TRADING LLC, holds NPDES permit CT0020800, which discharges to Byram River. EPA’s file records it issued October 18, 2007 and expiring October 31, 2012. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | BRUNSWICK SCHOOL, INC. |
|---|---|
| Permittee as filed | HIGH TOWER TRADING LLC |
| NPDES ID | CT0020800 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | October 18, 2007 |
| Expiration date | October 31, 2012 |
| Issuing agency | CT DEP |
| Address | Greenwich, CT 06831 |
| Receiving water | BYRAM RIVER |
| Subwatershed | Blind Brook-Horseneck Brook (HUC 011000060405) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 51Pollutants on file
- 22Under a numeric limit
- 38With a violation of any kind
- 5With 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, in conduit or thru treatment plant | 1 | 23 | 14 | December 31, 2008 | 82,219,904% over the limit |
| Solids, suspended percent removal | 1 | 16 | 6 | July 31, 2021 | 900% over the limit |
| Solids, total suspended | 3 | 32 | 2 | June 30, 2006 | 710% over the limit |
| BOD, 5-day, percent removal | 1 | 12 | 2 | April 30, 2022 | 80% over the limit |
| BOD, 5-day, 20 deg. C | 3 | 33 | 1 | September 30, 2006 | 6% over the limit |
| Coliform, fecal general | 2 | 12 | 0 | ||
| Nitrogen, ammonia total [as N] | 1 | 8 | 0 | ||
| pH | 0 | 4 | 0 | ||
| Chlorine, total residual | 0 | 4 | 0 | ||
| LC50 Static 48Hr Acute D. Pulex | 2 | 2 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 2 | 2 | 0 | ||
| Flow rate | 0 | 2 | 0 | ||
| Oxygen, dissolved [DO] | 0 | 2 | 0 | ||
| Solids, settleable | 0 | 2 | 0 | ||
| Nitrogen, nitrite total [as N] | 0 | 2 | 0 | ||
| Nitrogen, nitrate total [as N] | 0 | 2 | 0 | ||
| Phosphorus, total [as P] | 0 | 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 | ||
| Copper, total [as Cu] | 0 | 2 | 0 | ||
| Iron, total [as Fe] | 0 | 2 | 0 | ||
| Lead, total [as Pb] | 0 | 2 | 0 | ||
| Thallium, total [as Tl] | 0 | 2 | 0 | ||
| Nickel, total [as Ni] | 0 | 2 | 0 | ||
| Silver, total [as Ag] | 0 | 2 | 0 | ||
| Zinc, total [as Zn] | 0 | 2 | 0 | ||
| Antimony, total [as Sb] | 0 | 2 | 0 | ||
| Aluminum, total [as Al] | 0 | 2 | 0 | ||
| Selenium, total [as Se] | 0 | 2 | 0 | ||
| Phenols | 0 | 2 | 0 | ||
| Mercury, total [as Hg] | 0 | 2 | 0 | ||
| NOAEL Static 48Hr Acute D. pulex | 0 | 2 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 0 | 2 | 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
- 6Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 25, 2024 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| July 25, 2024 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| July 25, 2024 | Management Practice Violations - Failure to Maintain Records | ST6 |
| February 5, 2020 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| February 5, 2020 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| February 5, 2020 | Management Practice Violations - Failure to Maintain Records | 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.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.