BOULDER CITY OF Water Quality Report
Population
1,400
people served
Water Source
🏔️ Ground
wells & aquifers
National Rank
Top 94%
of 49,184 US systems
5-Year Record
⚠️ 6
violations recorded
D
Poor
Safety Grade
6 violations in the past 5 years, including 3 health-based
System Details
- PWSID
- MT0000158
- Population Served
- 1,400
- Water Source
- Ground Water
- Owner
- Local Government
- State
- Montana
- EPA Region
- 8
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Contaminant 5000 | ✕ Health-Based | 11 |
| Barium | ⚠ Monitoring/Reporting | 3 |
| Cadmium | ⚠ Monitoring/Reporting | 3 |
| Chromium | ⚠ Monitoring/Reporting | 3 |
| Fluoride | ⚠ Monitoring/Reporting | 3 |
| Selenium | ⚠ Monitoring/Reporting | 3 |
| Contaminant 1036 | ⚠ Monitoring/Reporting | 3 |
| Beryllium | ⚠ Monitoring/Reporting | 3 |
| Contaminant 1075 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 1085 | ⚠ Monitoring/Reporting | 3 |
| Thallium | ⚠ Monitoring/Reporting | 3 |
| Total Trihalomethanes (TTHMs) | ⚠ Monitoring/Reporting | 3 |
| Haloacetic Acids (HAA5) | ⚠ Monitoring/Reporting | 3 |
| Contaminant 8000 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 0200 | ✕ Health-Based | 2 |
Violation History
2024
4
2022
2
2018
1
2014
2
2011
30
2006
2
2005
1
2004
2
2003
2
2002
2
Total violations on record: 50
Service Area
Cities Served
ZIP Codes Served
Recommended Water Filters
Based on contaminants detected in this water system:
Reverse Osmosis System
Removes up to 99% of contaminants including PFAS, lead, arsenic, and nitrates
Removes: Fluoride, Cadmium, Chromium, Selenium, Barium
Activated Carbon Filter
Effective for chlorine, THMs, pesticides, and taste/odor improvement
Removes: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
Water Distiller
Removes heavy metals, minerals, and most contaminants through evaporation
Removes: Cadmium, Fluoride
How does this compare?
This systemNational average
Grade D
Avg: B-C
50violations total
179% of national average
National avg: ~28 per system
🏘️ Small community water system.