Population Served
58.0K
Service Connections
18.5K
Total Violations
373
Health-Based Violations
9
Lead & Copper Data
Lead Level
Caution2.00 ppb
Action Level: 15 ppb (EPA) · Sampled: 2025-06-30
015 ppb action level
Copper Level
No copper sampling data available
System Details
- Water Source
- Groundwater
- System Type
- Community Water System
- City
- SYOSSET
- ZIP Code
- 11791
- Counties Served
- Nassau
- Cities Served
- OYSTER BAY (T)
- Open Violations
- 0
- State
- New York
Violation Summary
373
Total Violations
9
Health-Based
0
Open Now
Most recent violation: 2013-04-01
Explore New York Water Quality
See all water systems, lead data, and violation trends for New York.
Data source: EPA ECHO SDWIS Bulk Download (Jan 2026). PWSID: NY2902831.SafeWater Home