DARK HOLLOW WATER ASSOCIATION Water Quality Report
Population
45
people served
Water Source
🏔️ Ground
wells & aquifers
National Rank
Top 90%
of 49,184 US systems
5-Year Record
⚠️ 2
violations recorded
C
Fair
Safety Grade
2 violations in the past 5 years, including 3 health-based
System Details
- PWSID
- OR4105117
- Population Served
- 45
- Water Source
- Ground Water
- Owner
- Private
- State
- Oregon
- EPA Region
- 10
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Total Coliform | ⚠ Monitoring/Reporting | 2 |
| Contaminant 7500 | ⚠ Monitoring/Reporting | 2 |
| Contaminant 8000 | ✕ Health-Based | 6 |
| Uranium | ⚠ Monitoring/Reporting | 4 |
| Radium-226 | ⚠ Monitoring/Reporting | 4 |
| Gross Alpha | ⚠ Monitoring/Reporting | 4 |
| Contaminant 5000 | ⚠ Monitoring/Reporting | 2 |
| Total Trihalomethanes (TTHMs) | ⚠ Monitoring/Reporting | 2 |
| Haloacetic Acids (HAA5) | ⚠ Monitoring/Reporting | 2 |
Violation History
2022
2
2019
4
2017
17
2016
1
2011
2
2010
2
Total violations on record: 28
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: Uranium, Radium-226
Activated Carbon Filter
Effective for chlorine, THMs, pesticides, and taste/odor improvement
Removes: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5)
UV Water Purifier
Kills bacteria and viruses without chemicals
Removes: Total Coliform
How does this compare?
This systemNational average
Grade C
Avg: B-C
28violations total
100% of national average
National avg: ~28 per system
🏘️ Small community water system.