MASON CITY WATER DEPARTMENT Water Quality Report
Population
27,338
people served
Water Source
🏔️ Ground
wells & aquifers
National Rank
Top 90%
of 49,184 US systems
5-Year Record
⚠️ 4
violations recorded
C
Fair
Safety Grade
4 violations in the past 5 years
System Details
- PWSID
- IA1750048
- Population Served
- 27,338
- Water Source
- Ground Water
- Owner
- Local Government
- State
- Iowa
- EPA Region
- 7
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Contaminant 7000 | ⚠ Monitoring/Reporting | 4 |
| Contaminant 8000 | ⚠ Monitoring/Reporting | 4 |
Violation History
2024
4
2004
1
2003
1
2002
1
2001
1
Total violations on record: 8
Service Area
Cities Served
ZIP Codes Served
How does this compare?
This systemNational average
Grade C
Avg: B-C
8violations total
29% of national average
National avg: ~28 per system
📍 Mid-to-large system — serves 4× the national average.