A85/100
CAL AMERICAN WATER COMPANY - PIRU — Water Quality Report 2026
Serving 2,003 people · California
Water Source
Groundwater
County
—
System ID
CA5610021
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.42 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: May 1, 2021 – May 31, 2021Rule: Total Coliform RuleEnforcement: Formal — state order issued
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 CAL AMERICAN WATER COMPANY - PIRU
Is CAL AMERICAN WATER COMPANY - PIRU water safe to drink?
CAL AMERICAN WATER COMPANY - PIRU water receives a grade of A (85/100), which is considered excellent. Out of 2 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CAL AMERICAN WATER COMPANY - PIRU detected?
2 contaminants were tested in CAL AMERICAN WATER COMPANY - PIRU's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does CAL AMERICAN WATER COMPANY - PIRU have any EPA violations?
Yes, CAL AMERICAN WATER COMPANY - PIRU has 3 EPA violation(s) on record, with the most recent in 2021. Violation types include MON, MCL, MR. 1 are health-based violations.
How many people does CAL AMERICAN WATER COMPANY - PIRU serve?
CAL AMERICAN WATER COMPANY - PIRU serves approximately 2,003 people, California.
What type of water does CAL AMERICAN WATER COMPANY - PIRU provide?
CAL AMERICAN WATER COMPANY - PIRU sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA5610021.
How does CAL AMERICAN WATER COMPANY - PIRU compare to other utilities in California?
CAL AMERICAN WATER COMPANY - PIRU scores 85/100 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.