ARCO CITY OF
PWS ID: ID6120001 · ARCO, Idaho 83213
Population Served
1,080
Total Violations
60
Health-Based Violations
13
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 619
- County
- Butte
- School/Daycare
- No
- MCL Violations
- 13
- Monitoring Violations
- 45
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 14 | 2015 |
| Coliform (TCR) | MCL | 9 | 2015 |
| Lead and Copper Rule | MR | 6 | 2016 |
| Revised Total Coliform Rule | MCL | 4 | 2022 |
| Nitrate | MR | 2 | 1996 |
| Barium | MR | 2 | 1993 |
| Cadmium | MR | 2 | 1993 |
| Chromium | MR | 2 | 1993 |
| Antimony, Total | MR | 2 | 1993 |
| Nickel | MR | 2 | 1993 |
| E. COLI | MR | 2 | 2025 |
| Thallium, Total | MR | 2 | 1993 |
| Beryllium, Total | MR | 2 | 1993 |
| Mercury | MR | 2 | 1993 |
| Fluoride | MR | 2 | 1993 |
| Selenium | MR | 2 | 1993 |
| Di(2-ethylhexyl) phthalate | MR | 1 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.