Mason City, Iowa Water Violations
10 water systems serve Mason City, Iowa, providing drinking water to an estimated 27,859 people. These systems have 21 health-based violations on record, meaning contaminant levels exceeded EPA maximum contaminant levels (MCLs) or required treatment standards were not met.
Select a water system below to see its full violation history, lead and copper testing results, and compliance status.
| Water System | Population Served | Source | Violations | Health-Based |
|---|---|---|---|---|
| Pine Creek Golf Course | 55 | Groundwater | 69 | 17 |
| Camp at the Woods | 69 | Groundwater | 34 | 2 |
| Heidelberg Materials US Cement LLC | 130 | Groundwater | 11 | 2 |
| Mason City Water Department | 27,338 | Groundwater | 8 | 0 |
| Van Wall Equipment (Mason City) | 34 | Groundwater | 2 | 0 |
| Mason City Red Power Inc | 38 | Groundwater | 1 | 0 |
| Lime Creek Conservation Area | 81 | Groundwater | 0 | 0 |
| Ziegler Cat (Mason City) | 49 | Groundwater | 0 | 0 |
| Four Oaks (Mason City) | 38 | Groundwater | 0 | 0 |
| Linn Grove Park | 27 | Groundwater | 0 | 0 |