JOHN JAY MIDDLE SCHOOL
PWS ID: NY5907701 · KATONAH, New York 10536
Population Served
945
Total Violations
188
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 1
- County
- Westchester
- School/Daycare
- Yes
- MCL Violations
- 0
- Monitoring Violations
- 130
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 10 | 2017 |
| Groundwater Rule | TT | 4 | 2025 |
| Barium | MR | 3 | 2011 |
| Cadmium | MR | 3 | 2011 |
| Chromium | MR | 3 | 2011 |
| CYANIDE | MR | 3 | 2011 |
| Fluoride | MR | 3 | 2011 |
| Mercury | MR | 3 | 2011 |
| Nickel | MR | 3 | 2011 |
| Antimony, Total | MR | 3 | 2011 |
| Beryllium, Total | MR | 3 | 2011 |
| BHC-GAMMA | MR | 3 | 2019 |
| Toxaphene | MR | 3 | 2019 |
| Dalapon | MR | 3 | 2019 |
| Simazine | MR | 3 | 2019 |
| Picloram | MR | 3 | 2019 |
| Hexachlorocyclopentadiene | MR | 3 | 2019 |
| Aldicarb sulfone | MR | 3 | 2019 |
| Atrazine | MR | 3 | 2019 |
| LASSO | MR | 3 | 2019 |
| Heptachlor epoxide | MR | 3 | 2019 |
| 2,4,5-TP | MR | 3 | 2019 |
| ETHYLENE DIBROMIDE | MR | 3 | 2019 |
| Carbofuran | MR | 3 | 2019 |
| Di(2-ethylhexyl) adipate | MR | 3 | 2019 |
| Pentachlorophenol | MR | 3 | 2019 |
| Aldicarb sulfoxide | MR | 3 | 2019 |
| OXAMYL | MR | 3 | 2019 |
| Di(2-ethylhexyl) phthalate | MR | 3 | 2019 |
| Chlordane | MR | 3 | 2019 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.