SWALEDALE WATER SUPPLY
PWS ID: IA1778008 · MARSHALLTOWN, Iowa 50158
Population Served
144
Total Violations
129
Health-Based Violations
22
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 93
- County
- Cerro Gordo
- School/Daycare
- No
- MCL Violations
- 22
- Monitoring Violations
- 71
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 22 | 1992 |
| Coliform (TCR) | MR | 20 | 1992 |
| Arsenic | MR | 8 | 2001 |
| LASSO | MR | 3 | 1995 |
| Atrazine | MR | 3 | 1995 |
| Benzo(a)pyrene | MR | 3 | 1995 |
| Di(2-ethylhexyl) adipate | MR | 3 | 1995 |
| Di(2-ethylhexyl) phthalate | MR | 3 | 1995 |
| Dinoseb | MR | 3 | 1995 |
| Simazine | MR | 3 | 1995 |
| 2,4,5-TP | MR | 3 | 1995 |
| Dalapon | MR | 3 | 1995 |
| Pentachlorophenol | MR | 3 | 1995 |
| 2,4-D | MR | 3 | 1995 |
| Picloram | MR | 3 | 1995 |
| Barium | MR | 1 | 1980 |
| Selenium | MR | 1 | 1980 |
| Fluoride | MR | 1 | 1980 |
| Chromium | MR | 1 | 1980 |
| Cadmium | MR | 1 | 1980 |
| Nitrate | MR | 1 | 1980 |
| Mercury | MR | 1 | 1980 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.