C55/100
CITY OF WILLIS — Water Quality Report 2026
Serving 9,867 people · Texas
Water Source
Groundwater
County
—
System ID
TX1700003
Violations
34
Contaminant Test Results
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)
4
Unresolved
1
Health-Related
TIER 3Unresolved
Disinfection byproduct treatment technique failure
TIER 1 — URGENTUnresolved
Maximum Contaminant Level Violation
When: September 1, 2025 – September 30, 2025Rule: Total Coliform RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2024Rule: Ground Water RuleEnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Failed to conduct Level 1 Assessment
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: June 28, 2024Rule: Consumer Confidence 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
Frequently Asked Questions About CITY OF WILLIS
Is CITY OF WILLIS water safe to drink?
CITY OF WILLIS water receives a grade of C (55/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 34 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has CITY OF WILLIS detected?
38 contaminants were tested in CITY OF WILLIS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CITY OF WILLIS have any EPA violations?
Yes, CITY OF WILLIS has 34 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MCL, MR. 2 are health-based violations.
How many people does CITY OF WILLIS serve?
CITY OF WILLIS serves approximately 9,867 people, Texas.
What type of water does CITY OF WILLIS provide?
CITY OF WILLIS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is TX1700003.
How does CITY OF WILLIS compare to other utilities in Texas?
CITY OF WILLIS scores 55/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Texas state page for a full comparison of water systems.