SAN JOSE WATER Water Quality Report
Population
1,039,920
people served
Water Source
🌊 Surface
rivers, lakes, reservoirs
National Rank
Top 90%
of 49,184 US systems
5-Year Record
⚠️ 4
violations recorded
C
Fair
Safety Grade
4 violations in the past 5 years, including 4 health-based
System Details
- PWSID
- CA4310011
- Population Served
- 1,039,920
- Water Source
- Surface Water
- Owner
- Private
- State
- California
- EPA Region
- 9
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Total Coliform | ⚠ Monitoring/Reporting | 3 |
| Contaminant 1039 | ⚠ Monitoring/Reporting | 3 |
| Contaminant 0200 | ✕ Health-Based | 4 |
Violation History
2023
4
2019
3
2017
3
Total violations on record: 10
Service Area
Cities Served
ZIP Codes Served
Recommended Water Filters
Based on contaminants detected in this water system:
UV Water Purifier
Kills bacteria and viruses without chemicals
Removes: Total Coliform
How does this compare?
This systemNational average
Grade C
Avg: B-C
10violations total
36% of national average
National avg: ~28 per system
🏙️ This is a large system — serving 156× more people than the national average.