DERING HARBOR CORP
PWS ID: NY5121859 · SHELTER ISLAND HGTS, New York 11965
Population Served
250
Total Violations
9
Health-Based Violations
9
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 30
- County
- Suffolk
- School/Daycare
- No
- MCL Violations
- 9
- Monitoring Violations
- 0
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 6 | 2008 |
| Revised Total Coliform Rule | MCL | 3 | 2020 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.