A89/100
Markham Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 1,400 residents · Texas
What's In Markham's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2014.
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
MARKHAM MUD
Population Served
1,400
Water Source
Groundwater
System ID
TX1610006
Frequently Asked Questions About Markham Water
Is Markham tap water safe to drink?
Markham, Texas tap water receives a grade of A (89/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA maximum contaminant levels (MCLs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Markham's water?
1 contaminants were tested in Markham's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Markham have any water quality violations?
Yes, Markham has 7 EPA violation(s) on record, with the most recent in 2014. Violation types include MR, Other, MCL. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Markham?
Markham 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. All contaminants are within health goals.
Where does Markham's tap water come from?
Markham's drinking water is sourced from groundwater and supplied by MARKHAM MUD. The system serves approximately 1,400 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Markham'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. Markham'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 Markham's water compare to other cities in Texas?
Markham's water quality score of 89/100 earns a grade of A, which is considered excellent. This places Markham 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 Markham's water quality?
If you have concerns about Markham'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 (MARKHAM MUD) 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.