Willis, Texas Water Quality Report
Water quality data for 24 water systems serving 20,681 people.
Water Source
Detected Contaminants
| Contaminant | Detected Level | EPA Limit (MCL) | Health Guideline | % of Limit | Status |
|---|---|---|---|---|---|
| lithium | 199.0 | No federal limit | 10.0 ug/L(EPA/USGS HBSL) | 1990% | Above guideline |
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Compliance & Violations
Active Violations (20)
75
Sep 13, 2025
52
Oct 1, 2024
52
Oct 1, 2024
52
Oct 1, 2024
34
Jun 28, 2024
34
Jun 28, 2024
34
Jun 28, 2024
34
Jun 28, 2024
71
Jul 1, 2022
71
Jul 1, 2022
75
Aug 23, 2021
75
Feb 14, 2021
75
Mar 10, 2019
75
Mar 10, 2019
75
Mar 10, 2019
75
Aug 19, 2018
75
Feb 8, 2016
75
Oct 13, 2015
34
Aug 1, 2014
34
Aug 1, 2014
Resolved Violations (480)
1A
Sep 1, 2025 — Sep 30, 2025
1A
Sep 1, 2025 — Sep 30, 2025
1A
Sep 1, 2025 — Sep 30, 2025
1A
Sep 1, 2025 — Sep 30, 2025
3A
Mar 1, 2025 — Mar 31, 2025
+ 475 more resolved violations
Frequently Asked Questions
Is Willis tap water safe to drink?
Willis's water meets all EPA maximum contaminant levels. However, 1 contaminants were detected at various levels. Some residents may prefer additional filtration for peace of mind.
What contaminants are in Willis tap water?
1 contaminants have been detected in Willis's water supply across 24 water systems. See the full contaminant table above for details.
How can I improve my water quality in Willis?
Install a water filter rated for the specific contaminants found in Willis's water. See our filter recommendations above. You can also request your utility's Consumer Confidence Report for the most current test results.
Does Willis have any water quality violations?
Yes, Willis currently has 139 active violations. See the violations section above for details.