A92/100
Wallis Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 1,292 residents · Texas
What's In Wallis's Tap Water?
8
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
1
Violation (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Unresolved
Disinfection byproduct treatment technique failure
When: December 1, 2021Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
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
CITY OF WALLIS
Population Served
1,292
Water Source
Groundwater
System ID
TX0080015
Frequently Asked Questions About Wallis Water
Is Wallis tap water safe to drink?
Wallis, Texas tap water receives a grade of A (92/100), which is considered excellent. Out of 8 contaminants tested, none exceed EPA maximum contaminant levels (MCLs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Wallis's water?
8 contaminants were tested in Wallis's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Wallis have any water quality violations?
Yes, Wallis has 8 EPA violation(s) on record, with the most recent in 2021. Violation types include Other, MR, MON. None of these are classified as health-based violations.
Do I need a water filter in Wallis?
Wallis 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. All contaminants are within health goals.
Where does Wallis's tap water come from?
Wallis's drinking water is sourced from groundwater and supplied by CITY OF WALLIS. The system serves approximately 1,292 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Wallis'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. Wallis'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 Wallis's water compare to other cities in Texas?
Wallis's water quality score of 92/100 earns a grade of A, which is considered excellent. This places Wallis among the better-performing water systems in Texas. Visit our Texas state page to see how all cities in the state compare.
What should I do if I'm concerned about Wallis's water quality?
If you have concerns about Wallis'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 (CITY OF WALLIS) 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.