Population Served
22.0K
Service Connections
5.4K
Total Violations
1954
Health-Based Violations
36
Lead & Copper Data
Lead Level
Safe0.00 ppb
Action Level: 15 ppb (EPA) · Sampled: 2024-12-31
015 ppb action level
Copper Level
No copper sampling data available
System Details
- Water Source
- Groundwater
- System Type
- Community Water System
- City
- NOGALES
- ZIP Code
- 85621
- Counties Served
- Santa Cruz
- Cities Served
- NOGALES
- Open Violations
- 0
- State
- Arizona
Violation Summary
1954
Total Violations
36
Health-Based
0
Open Now
Most recent violation: 2025-07-01
Explore Arizona Water Quality
See all water systems, lead data, and violation trends for Arizona.
Data source: EPA ECHO SDWIS Bulk Download (Jan 2026). PWSID: AZ0412004.SafeWater Home