A89/100
CITY OF TOMBALL — Water Quality Report 2026
Serving 17,532 people · Texas
Water Source
Groundwater
County
—
System ID
TX1010026
Violations
4
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2016.
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 TOMBALL
Is CITY OF TOMBALL water safe to drink?
CITY OF TOMBALL water receives a grade of A (89/100), which is considered excellent. Out of 51 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has CITY OF TOMBALL detected?
51 contaminants were tested in CITY OF TOMBALL's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does CITY OF TOMBALL have any EPA violations?
Yes, CITY OF TOMBALL has 4 EPA violation(s) on record, with the most recent in 2016. Violation types include MR, MCL, Other. 1 are health-based violations.
How many people does CITY OF TOMBALL serve?
CITY OF TOMBALL serves approximately 17,532 people, Texas.
What type of water does CITY OF TOMBALL provide?
CITY OF TOMBALL sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is TX1010026.
How does CITY OF TOMBALL compare to other utilities in Texas?
CITY OF TOMBALL scores 89/100 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.