F0/100
ST DAVID DWID — Water Quality Report 2026
Serving 1,255 people · Arizona
Water Source
Groundwater
County
—
System ID
AZ0402039
Violations
54
Contaminant Test Results
EPA Violation History
7
Violations (last 5yr)
0
Unresolved
1
Health-Related
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: December 20, 2024 – January 31, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Reporting violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 17, 2024 – January 23, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Treatment technique violation
When: October 17, 2024 – January 23, 2025Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – July 11, 2024Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: October 2, 2023 – October 5, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: February 1, 2023 – February 28, 2023Rule: Total Coliform RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2023 – February 15, 2023Rule: Ground Water 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 ST DAVID DWID
Is ST DAVID DWID water safe to drink?
ST DAVID DWID water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 54 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has ST DAVID DWID detected?
1 contaminants were tested in ST DAVID DWID's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does ST DAVID DWID have any EPA violations?
Yes, ST DAVID DWID has 54 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, RPT, TT. 15 are health-based violations.
How many people does ST DAVID DWID serve?
ST DAVID DWID serves approximately 1,255 people, Arizona. The system provides water to 1 community: St David.
What type of water does ST DAVID DWID provide?
ST DAVID DWID sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is AZ0402039.
How does ST DAVID DWID compare to other utilities in Arizona?
ST DAVID DWID 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.