A82/100
JOSHUA BASIN WATER DISTRICT — Water Quality Report 2026
Serving 6,640 people · California
Water Source
Groundwater
County
—
System ID
CA3610025
Violations
3
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.011 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2003.
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 JOSHUA BASIN WATER DISTRICT
Is JOSHUA BASIN WATER DISTRICT water safe to drink?
JOSHUA BASIN WATER DISTRICT water receives a grade of A (82/100), which is considered excellent. Out of 51 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has JOSHUA BASIN WATER DISTRICT detected?
51 contaminants were tested in JOSHUA BASIN WATER DISTRICT's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does JOSHUA BASIN WATER DISTRICT have any EPA violations?
Yes, JOSHUA BASIN WATER DISTRICT has 3 EPA violation(s) on record, with the most recent in 2003. Violation types include MCL. 3 are health-based violations.
How many people does JOSHUA BASIN WATER DISTRICT serve?
JOSHUA BASIN WATER DISTRICT serves approximately 6,640 people, California.
What type of water does JOSHUA BASIN WATER DISTRICT provide?
JOSHUA BASIN WATER DISTRICT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is CA3610025.
How does JOSHUA BASIN WATER DISTRICT compare to other utilities in California?
JOSHUA BASIN WATER DISTRICT scores 82/100 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.