F0/100
St George Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 1,340 residents · Utah
What's In St George's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
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
4
Violations (last 5yr)
0
Unresolved
2
Health-Related
TIER 1 — URGENTResolved
Maximum Contaminant Level Violation
When: June 1, 2024 – June 30, 2024Rule: Total Coliform RuleEnforcement: Formal — state order issued
TIER 1 — URGENTResolved
Maximum Contaminant Level Violation
When: May 1, 2024 – May 31, 2024Rule: Total Coliform RuleEnforcement: Formal — state order issued
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, 2023 – December 31, 2023Enforcement: 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, 2023 – December 31, 2023Enforcement: 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
Water Utility Details
DIAMOND VALLEY ACRES
Population Served
1,340
Water Source
Groundwater
System ID
UTAH27065
Frequently Asked Questions About St George Water
Is St George tap water safe to drink?
St George, Utah tap water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA maximum contaminant levels and 301 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in St George's water?
Of the 1 contaminants tested in St George's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does St George have any water quality violations?
Yes, St George has 301 EPA violation(s) on record, with the most recent in 2024. Violation types include MCL, MR, MON. 7 of these are health-based violations, which are the most serious category.
Do I need a water filter in St George?
St George water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 1 contaminant(s) exceed these stricter goals.
Where does St George's tap water come from?
St George's drinking water is sourced from groundwater and supplied by DIAMOND VALLEY ACRES. The system serves approximately 1,340 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is St George's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. St George's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does St George's water compare to other cities in Utah?
St George's water quality score of 0/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Utah state page to see how all cities in the state compare.
What should I do if I'm concerned about St George's water quality?
If you have concerns about St George's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (DIAMOND VALLEY ACRES) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.