HARLEM CITY OF Water Quality Report
Population
820
people served
Water Source
🌊 Surface
rivers, lakes, reservoirs
National Rank
—
of 49,184 US systems
5-Year Record
⚠️ 84
violations recorded
F
Unsafe
Safety Grade
84 violations in the past 5 years, including 68 health-based
System Details
- PWSID
- MT0000239
- Population Served
- 820
- Water Source
- Surface Water
- Owner
- Local Government
- State
- Montana
- EPA Region
- 8
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Contaminant 7000 | ⚠ Monitoring/Reporting | 17 |
| Contaminant 5000 | ⚠ Monitoring/Reporting | 4 |
| Total Trihalomethanes (TTHMs) | ✕ Health-Based | 66 |
| Haloacetic Acids (HAA5) | ✕ Health-Based | 9 |
| Contaminant 3100 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 8000 | ✕ Health-Based | 9 |
| Antimony | ⚠ Monitoring/Reporting | 1 |
| Arsenic | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2378 | ⚠ Monitoring/Reporting | 1 |
| Vinyl Chloride | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2955 | ⚠ Monitoring/Reporting | 1 |
| Trichloroethylene (TCE) | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2968 | ⚠ Monitoring/Reporting | 1 |
| Tetrachloroethylene (PCE) | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2976 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2977 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2979 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2980 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2981 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2982 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2983 | ⚠ Monitoring/Reporting | 1 |
| Chloramine | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2985 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2987 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2989 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2990 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2991 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2992 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 2996 | ⚠ Monitoring/Reporting | 1 |
| Contaminant 0800 | ✕ Health-Based | 2 |
Violation History
2025
8
2024
20
2023
11
2022
15
2021
30
2020
5
2019
6
2018
4
2017
15
2016
9
Total violations on record: 131
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: Arsenic
Activated Carbon Filter
Effective for chlorine, THMs, pesticides, and taste/odor improvement
Removes: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5), Trichloroethylene (TCE), Tetrachloroethylene (PCE), Vinyl Chloride
Water Distiller
Removes heavy metals, minerals, and most contaminants through evaporation
Removes: Arsenic
How does this compare?
This systemNational average
Grade F
Avg: B-C
131violations total
468% of national average
National avg: ~28 per system
🏘️ Small community water system.