C45/100
San Xavier West — Water Quality Report 2026
Serving 1,511 people · Arizona
Water Source
Groundwater
County
—
System ID
090400035
Violations
40
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | < 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: November 1, 2024 – November 30, 2024Enforcement: Resolving — corrective action underway
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 San Xavier West
Is San Xavier West water safe to drink?
San Xavier West water receives a grade of C (45/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 40 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has San Xavier West detected?
1 contaminants were tested in San Xavier West's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does San Xavier West have any EPA violations?
Yes, San Xavier West has 40 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, MCL. 3 are health-based violations.
How many people does San Xavier West serve?
San Xavier West serves approximately 1,511 people, Arizona. The system provides water to 1 community: San Xavier West.
What type of water does San Xavier West provide?
San Xavier West sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is 090400035.
How does San Xavier West compare to other utilities in Arizona?
San Xavier West scores 45/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Arizona state page for a full comparison of water systems.