Public water system record
San Jose Water
Serves San Jose, Saratoga, Los Gatos and 8 more places, Santa Clara County, CA · 1,039,920 people served
Federal records show 1 health-based violation and 1 monitoring/reporting issue for San Jose Water in the last ten years. The most serious issue in this window was a resolved Surface Water Treatment Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 1
Key facts
- San Jose Water draws water from 87 wells and 1 surface water intake (19 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: compliance order (no penalty) by California, June 2023.
- Record on file since 1997, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 236,341 service lines.
Check whether San Jose Water serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Jun 1, 2023 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
E. coli
Monitoring and reporting
|
Apr 1, 2017 | Resolved |
Full record since 1997
EPA's records for San Jose Water go back to 1997. Before October 19, 2016 they list 2 health-based violations (2 resolved) and no monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 0 |
| 2000s | 1 | 0 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 1 | 0 |
Most recent health-based violation before October 19, 2016: Total Coliform (acute), began May 2000, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform (acute)
Contaminant limit exceeded
|
May 1, 2000 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Aug 1, 1997 | Resolved |
Enforcement actions
California regulators took 2 formal enforcement actions against San Jose Water between 2017 and 2023. The most recent was a compliance order (no penalty) in June 2023.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jun 13, 2023 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| May 1, 2017 | California | Compliance order (no penalty) | 1 violation: E. coli |
What the violations mean
Surface Water Treatment Rule
1 incidentThe system did not complete a treatment step or action that the Surface Water Treatment Rule requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
San Jose Water draws water from 87 wells and 1 surface water intake (19 of them for emergency, seasonal or other part-time use). It also buys water from Santa Clara Valley Water District. It also has an emergency connection to City of Cupertino. 16 other community water systems and 3 smaller public systems such as schools, businesses or campgrounds buy water from San Jose Water. 2 other public water systems have emergency connections to San Jose Water.
Buys water from
- Santa Clara Valley Water District San Jose, CA
Emergency or part-time connections to
- City of Cupertino San Jose, CA
Community systems that buy water from it
- Big Redwood Park Water Felton, CA
- Brush and Old Well Mutual Water Company Los Gatos, CA
- Chemeketa Park Mutual Water Company Santa Clara, CA
- Kennon Water Company San Jose, CA
- Maria Lane Mutual Water Company Saratoga, CA
- Mireval Improvement Association Los Gatos, CA
- Mountain Springs Mutual Water Company Los Gatos, CA
- Mt. Eden Mutual Water Company Saratoga, CA
- Mt. Pleasant Water Users Association San Jose, CA
- Oakmont Water System Stockton, CA
- Ridge Mutual Water Company Los Gatos, CA
- Roseview Heights Mutual Water Company San Jose, CA
- Saratoga Heights Mutual Water Company Saratoga, CA
- Summit West Mutual Water Co. Los Gatos, CA
- Villa Del Monte MWC Los Gatos, CA
- Vista Grande Water Users Association Los Gatos, CA
Annual water quality report
San Jose Water must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.
Certified drinking water labs by state EPA guidance for private wells