A89/100
Tomball Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 17,532 residents · Texas
What's In Tomball's Tap Water?
51
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
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
Water Utility Details
CITY OF TOMBALL
Population Served
17,532
Water Source
Groundwater
System ID
TX1010026
Frequently Asked Questions About Tomball Water
Is Tomball tap water safe to drink?
Tomball, Texas tap water receives a grade of A (89/100), which is considered excellent. Out of 51 contaminants tested, none exceed EPA maximum contaminant levels (MCLs) and 1 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Tomball's water?
Of the 51 contaminants tested in Tomball's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Tomball have any water quality violations?
Yes, Tomball has 4 EPA violation(s) on record, with the most recent in 2016. Violation types include MR, MCL, Other. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Tomball?
Tomball 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. 1 contaminant(s) exceed these stricter goals.
Where does Tomball's tap water come from?
Tomball's drinking water is sourced from groundwater and supplied by CITY OF TOMBALL. The system serves approximately 17,532 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Tomball'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. Tomball'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 Tomball's water compare to other cities in Texas?
Tomball's water quality score of 89/100 earns a grade of A, which is considered excellent. This places Tomball 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 Tomball's water quality?
If you have concerns about Tomball'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 TOMBALL) 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.