A88/100
PALO ALTO PARK MUTUAL WATER COMPANY — Water Quality Report 2026
Serving 2,900 people · California
Water Source
Groundwater
County
—
System ID
CA4110020
Violations
5
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About PALO ALTO PARK MUTUAL WATER COMPANY
Is PALO ALTO PARK MUTUAL WATER COMPANY water safe to drink?
PALO ALTO PARK MUTUAL WATER COMPANY water receives a grade of A (88/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has PALO ALTO PARK MUTUAL WATER COMPANY detected?
1 contaminants were tested in PALO ALTO PARK MUTUAL WATER COMPANY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does PALO ALTO PARK MUTUAL WATER COMPANY have any EPA violations?
Yes, PALO ALTO PARK MUTUAL WATER COMPANY has 5 EPA violation(s) on record, with the most recent in 2018. Violation types include MR, MCL, Other. 1 are health-based violations.
How many people does PALO ALTO PARK MUTUAL WATER COMPANY serve?
PALO ALTO PARK MUTUAL WATER COMPANY serves approximately 2,900 people, California.
What type of water does PALO ALTO PARK MUTUAL WATER COMPANY provide?
PALO ALTO PARK MUTUAL WATER COMPANY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA4110020.
How does PALO ALTO PARK MUTUAL WATER COMPANY compare to other utilities in California?
PALO ALTO PARK MUTUAL WATER COMPANY scores 88/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our California state page for a full comparison of water systems.