JOHN JAY SENIOR HIGH SCHOOL
PWS ID: NY5907700 · KATONAH, New York 10536
Population Served
1,425
Total Violations
154
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 11
- County
- Westchester
- School/Daycare
- Yes
- MCL Violations
- 8
- Monitoring Violations
- 140
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 14 | 2010 |
| Coliform (TCR) | MCL | 8 | 2003 |
| Coliform (TCR) | MR | 6 | 2008 |
| BHC-GAMMA | MR | 4 | 2017 |
| Methoxychlor | MR | 4 | 2017 |
| Toxaphene | MR | 4 | 2017 |
| Dalapon | MR | 4 | 2017 |
| Di(2-ethylhexyl) adipate | MR | 4 | 2017 |
| Aldicarb sulfoxide | MR | 4 | 2017 |
| Aldicarb sulfone | MR | 4 | 2017 |
| Aldicarb | MR | 4 | 2017 |
| 2,4-D | MR | 4 | 2017 |
| 2,4,5-TP | MR | 4 | 2017 |
| HEXACHLOROBENZENE | MR | 4 | 2017 |
| Pentachlorophenol | MR | 4 | 2017 |
| Total Polychlorinated Biphenyls (PCB) | MR | 4 | 2017 |
| Chlordane | MR | 4 | 2017 |
| Revised Total Coliform Rule | MON | 4 | 2024 |
| Nitrate | MR | 4 | 2023 |
| ETHYLENE DIBROMIDE | MR | 4 | 2017 |
| Hexachlorocyclopentadiene | MR | 4 | 2017 |
| OXAMYL | MR | 4 | 2017 |
| Benzo(a)pyrene | MR | 4 | 2017 |
| LASSO | MR | 4 | 2017 |
| Carbofuran | MR | 4 | 2017 |
| Atrazine | MR | 4 | 2017 |
| Picloram | MR | 4 | 2017 |
| Heptachlor | MR | 4 | 2017 |
| Dinoseb | MR | 4 | 2017 |
| Public Notice | Other | 4 | 2020 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.