Population Served
24.1K
Service Connections
7.7K
Total Violations
21
Health-Based Violations
4
Lead & Copper Data
Lead Level
Safe0.00 ppb
Action Level: 15 ppb (EPA) · Sampled: 2025-12-31
015 ppb action level
Copper Level
No copper sampling data available
System Details
- Water Source
- Purchased Surface Water
- System Type
- Community Water System
- City
- JOHNSTON
- ZIP Code
- 50131
- Counties Served
- Polk
- Cities Served
- JOHNSTON
- Open Violations
- 0
- State
- Iowa
Violation Summary
21
Total Violations
4
Health-Based
0
Open Now
Most recent violation: 2013-05-01
Explore Iowa Water Quality
See all water systems, lead data, and violation trends for Iowa.
Data source: EPA ECHO SDWIS Bulk Download (Jan 2026). PWSID: IA7740011.SafeWater Home