MERRILL MUNICIPAL WATER SUPPLY
PWS ID: IA7548072 · MERRILL, Iowa 51038
Population Served
717
Total Violations
291
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 360
- County
- Plymouth
- School/Daycare
- No
- MCL Violations
- 8
- Monitoring Violations
- 268
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 18 | 2021 |
| Coliform (TCR) | MR | 15 | 2004 |
| Arsenic | MR | 13 | 2013 |
| Beryllium, Total | MR | 9 | 2013 |
| CYANIDE | MR | 9 | 2013 |
| Cadmium | MR | 9 | 2013 |
| Chromium | MR | 9 | 2013 |
| Fluoride | MR | 9 | 2013 |
| Selenium | MR | 9 | 2013 |
| Thallium, Total | MR | 9 | 2013 |
| Barium | MR | 9 | 2013 |
| Antimony, Total | MR | 9 | 2013 |
| Mercury | MR | 9 | 2013 |
| Nitrate | MCL | 6 | 1987 |
| LASSO | MR | 4 | 1995 |
| Atrazine | MR | 4 | 1995 |
| Benzo(a)pyrene | MR | 4 | 1995 |
| 2,4-D | MR | 4 | 1995 |
| Dalapon | MR | 4 | 1995 |
| Pentachlorophenol | MR | 4 | 1995 |
| Picloram | MR | 4 | 1995 |
| 2,4,5-TP | MR | 4 | 1995 |
| Benzene | MR | 4 | 1995 |
| o-Dichlorobenzene | MR | 4 | 1995 |
| p-Dichlorobenzene | MR | 4 | 1995 |
| 1,2-Dichloroethane | MR | 4 | 1995 |
| 1,1-Dichloroethylene | MR | 4 | 1995 |
| Ethylbenzene | MR | 4 | 1995 |
| Toluene | MR | 4 | 1995 |
| 1,2,4-Trichlorobenzene | MR | 4 | 1995 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.