Population Served
27.3K
Service Connections
19.0K
Total Violations
647
Health-Based Violations
68
Lead & Copper Data
Lead Level
Caution2.90 ppb
Action Level: 15 ppb (EPA) · Sampled: 2023-12-31
015 ppb action level
Copper Level
No copper sampling data available
System Details
- Water Source
- Groundwater
- System Type
- Community Water System
- City
- MASON CITY
- ZIP Code
- 50401
- Counties Served
- Cerro Gordo
- Cities Served
- MASON CITY
- Open Violations
- 0
- State
- Iowa
Violation Summary
647
Total Violations
68
Health-Based
0
Open Now
Most recent violation: 2024-06-01
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: IA1750048.SafeWater Home