Public water system record
Alameda County Water District
Serves Fremont, Newark, Hayward and 1 more place, Alameda County, CA · 344,000 people served
Federal records show no health-based violations and no monitoring or reporting issues for Alameda County Water District in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Alameda County Water District draws water from 24 wells, 1 surface water intake and 1 reservoir (2 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: compliance order (no penalty) by California, April 1992.
- Record on file since 1992, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 146 unknown out of 88,158 service lines.
Check whether Alameda County Water District 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.
None since October 2016, and no monitoring or reporting violations either.
Full record since 1992
EPA's records for Alameda County Water District go back to 1992. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began April 1996, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 1996 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1993 | Resolved |
Enforcement actions
California regulators took 1 formal enforcement action against Alameda County Water District in 1992. The most recent was a compliance order (no penalty) in April 1992.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 13, 1992 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
Where the water comes from
Alameda County Water District draws water from 24 wells, 1 surface water intake and 1 reservoir (2 of them for emergency, seasonal or other part-time use). It also buys water from San Francisco Regional Water System. It also has emergency connections to City of Hayward and City of Milpitas.
Buys water from
- San Francisco Regional Water System Burlingame, CA
Emergency or part-time connections to
- City of Hayward Hayward, CA
- City of Milpitas Milpitas, CA
Annual water quality report
Alameda County Water District 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