F0/100
ADOC TUCSON — Water Quality Report 2026
Serving 4,500 people · Arizona
Water Source
Groundwater
County
—
System ID
AZ0420557
Violations
342
Contaminant Test Results
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: October 1, 2021 – November 23, 2021Rule: Total Coliform RuleEnforcement: 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 ADOC TUCSON
Is ADOC TUCSON water safe to drink?
ADOC TUCSON water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 342 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has ADOC TUCSON detected?
31 contaminants were tested in ADOC TUCSON's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does ADOC TUCSON have any EPA violations?
Yes, ADOC TUCSON has 342 EPA violation(s) on record, with the most recent in 2021. Violation types include RPT, Other, MR. 1 are health-based violations.
How many people does ADOC TUCSON serve?
ADOC TUCSON serves approximately 4,500 people, Arizona. The system provides water to 1 community: Tucson.
What type of water does ADOC TUCSON provide?
ADOC TUCSON sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is AZ0420557.
How does ADOC TUCSON compare to other utilities in Arizona?
ADOC TUCSON scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Arizona state page for a full comparison of water systems.