A100/100
CITY OF LEWISVILLE — Water Quality Report 2026
Serving 140,880 people · Texas
Water Source
Surface Water
County
—
System ID
TX0610004
Violations
0
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
This system has a clean compliance history.
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 LEWISVILLE
Is CITY OF LEWISVILLE water safe to drink?
CITY OF LEWISVILLE water receives a grade of A (100/100), which is considered excellent. Out of 69 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has CITY OF LEWISVILLE detected?
69 contaminants were tested in CITY OF LEWISVILLE's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does CITY OF LEWISVILLE have any EPA violations?
No, CITY OF LEWISVILLE has zero EPA violations on record. This indicates consistent compliance with federal drinking water standards.
How many people does CITY OF LEWISVILLE serve?
CITY OF LEWISVILLE serves approximately 140,880 people, Texas.
What type of water does CITY OF LEWISVILLE provide?
CITY OF LEWISVILLE sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is TX0610004.
How does CITY OF LEWISVILLE compare to other utilities in Texas?
CITY OF LEWISVILLE scores 100/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Texas state page for a full comparison of water systems.