F0/100
TEMPE CITY OF — Water Quality Report 2026
Serving 165,000 people · Arizona
Water Source
Surface Water
County
—
System ID
AZ0407100
Violations
301
Contaminant Test Results
3 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.009 µg/L | 0.004 µg/L | Over Limit |
PFOA | 0.005 µg/L | 0.004 µg/L | Over Limit |
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2018.
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 TEMPE CITY OF
Is TEMPE CITY OF water safe to drink?
TEMPE CITY OF water receives a grade of F (0/100), which is considered failing. 2 contaminant(s) exceed EPA legal limits and 301 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has TEMPE CITY OF detected?
76 contaminants were tested in TEMPE CITY OF's water. Notable contaminants include PFOS, PFOA, Lead (90th percentile). 2 exceed EPA legal limits (MCLs). 3 exceed EPA health goals (MCLGs).
Does TEMPE CITY OF have any EPA violations?
Yes, TEMPE CITY OF has 301 EPA violation(s) on record, with the most recent in 2018. Violation types include MR, TT, MCL. 2 are health-based violations.
How many people does TEMPE CITY OF serve?
TEMPE CITY OF serves approximately 165,000 people, Arizona. The system provides water to 1 community: Tempe.
What type of water does TEMPE CITY OF provide?
TEMPE CITY OF sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is AZ0407100.
How does TEMPE CITY OF compare to other utilities in Arizona?
TEMPE CITY OF 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.