TapSafetyReport
F0/100

USAF DAVIS MONTHAN AFB — Water Quality Report 2026

Serving 18,640 people · Arizona

Water Source
Groundwater
County
—
System ID
AZ0420549
Violations
732

Contaminant Test Results

EPA Violation History

12

Violations (last 5yr)

1

Unresolved

0

Health-Related

TIER 3Unresolved

Surface water treatment technique failure

When: July 1, 2025Verify on EPA.gov
TIER 3Resolved

Monitoring violation

This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.

When: April 1, 2025 – June 27, 2025Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
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: January 1, 2024 – December 31, 2024Enforcement: Resolving — corrective action underway
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: January 1, 2024 – December 31, 2024Enforcement: Resolving — corrective action underway
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: January 1, 2024 – December 31, 2024Enforcement: Resolving — corrective action underway
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: January 1, 2024 – December 31, 2024Enforcement: Resolving — corrective action underway
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: January 1, 2024 – December 31, 2024Enforcement: Resolving — corrective action underway
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: January 1, 2022 – December 31, 2022Enforcement: Resolving — corrective action underway
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: January 1, 2022 – December 31, 2022Enforcement: Resolving — corrective action underway
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: January 1, 2022 – December 31, 2022Enforcement: Resolving — corrective action underway
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: January 1, 2022 – December 31, 2022Enforcement: Resolving — corrective action underway
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: January 1, 2022 – December 31, 2022Enforcement: 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 USAF DAVIS MONTHAN AFB

Is USAF DAVIS MONTHAN AFB water safe to drink?

USAF DAVIS MONTHAN AFB water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 732 violation(s) are on record. Customers may want to consider using a water filter.

What contaminants has USAF DAVIS MONTHAN AFB detected?

51 contaminants were tested in USAF DAVIS MONTHAN AFB's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.

Does USAF DAVIS MONTHAN AFB have any EPA violations?

Yes, USAF DAVIS MONTHAN AFB has 732 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, RPT, MR. 2 are health-based violations.

How many people does USAF DAVIS MONTHAN AFB serve?

USAF DAVIS MONTHAN AFB serves approximately 18,640 people, Arizona. The system provides water to 1 community: Tucson.

What type of water does USAF DAVIS MONTHAN AFB provide?

USAF DAVIS MONTHAN AFB sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is AZ0420549.

How does USAF DAVIS MONTHAN AFB compare to other utilities in Arizona?

USAF DAVIS MONTHAN AFB 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.

Cities Served

Tucson