North Castle Water District #4
PWSID: NY5922909
System Details
| Population Served | 1,225 |
| Service Connections | 401 |
| Water Source | Groundwater |
| System Type | Community Water System |
| Owner | Local Government |
| Status | Active |
| City | Armonk |
| Zip Code | 10504 |
Areas Served
- North Castle (t), Westchester County
Lead & Copper Testing
| Contaminant | Level | EPA Action Level | Status |
|---|
| Lead (90th percentile) | 0.0085 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0058 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0050 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0044 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0025 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0021 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0019 mg/L | 0.015 mg/L | Below Action Level |
| Lead (90th percentile) | 0.0016 mg/L | 0.015 mg/L | Below Action Level |
Violation History (21 total)
| Contaminant | Violation | Date | Health-Based | Status |
|---|
| | 2024-10-01 | Yes | Acknowledged |
| | 2024-01-01 | Yes | Acknowledged |
| | 2023-04-01 | Yes | Acknowledged |
| | 2023-01-01 | Yes | Acknowledged |
| | 2022-10-01 | | Returned to Compliance |
| | 2022-10-01 | | Acknowledged |
| | 2022-10-01 | Yes | Acknowledged |
| | 2022-07-01 | Yes | Acknowledged |
| | 2022-04-01 | Yes | Acknowledged |
| | 2022-01-01 | Yes | Returned to Compliance |
| | 2021-04-01 | Major | Returned to Compliance |
| | 2020-10-01 | Yes | Returned to Compliance |
| | 2020-01-01 | | Returned to Compliance |
| | 2020-01-01 | Yes | Returned to Compliance |
| | 2019-10-01 | Yes | Returned to Compliance |
| | 2018-01-01 | | Returned to Compliance |
| | 2018-01-01 | | Returned to Compliance |
| | 2017-03-01 | | Acknowledged |
| | 2017-01-01 | | Acknowledged |
| | 2017-01-01 | Yes | Returned to Compliance |
| | 2015-01-01 | | Returned to Compliance |