C50/100
TUCSON WATER CORONA DE TUCSON — Water Quality Report 2026
Serving 10,217 people · Arizona
Water Source
Groundwater
County
—
System ID
AZ0410169
Violations
43
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
No violations in the past 5 years
Full EPA compliance since 2011.
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 TUCSON WATER CORONA DE TUCSON
Is TUCSON WATER CORONA DE TUCSON water safe to drink?
TUCSON WATER CORONA DE TUCSON water receives a grade of C (50/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 43 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has TUCSON WATER CORONA DE TUCSON detected?
31 contaminants were tested in TUCSON WATER CORONA DE TUCSON's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does TUCSON WATER CORONA DE TUCSON have any EPA violations?
Yes, TUCSON WATER CORONA DE TUCSON has 43 EPA violation(s) on record, with the most recent in 2011. Violation types include MR, Other, MCL. 1 are health-based violations.
How many people does TUCSON WATER CORONA DE TUCSON serve?
TUCSON WATER CORONA DE TUCSON serves approximately 10,217 people, Arizona. The system provides water to 1 community: Tucson.
What type of water does TUCSON WATER CORONA DE TUCSON provide?
TUCSON WATER CORONA DE TUCSON sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is AZ0410169.
How does TUCSON WATER CORONA DE TUCSON compare to other utilities in Arizona?
TUCSON WATER CORONA DE TUCSON scores 50/100 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.