Is Missouri City, TX tap water safe?
The short answer
2 of the 15 utilities serving Missouri City have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Texas’s records: City of Houston and Blue Ridge West MUD.
City of Houston, which serves the most people here, has 3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 33.9 ppb, above EPA’s health benchmark. Health goals are stricter than legal limits and are not enforced.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Missouri City’s ZIP codes, from EPA’s estimates.
- Open report
City of Houston
Texas · serves 3 million people · about 14,100 in Missouri City
3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 33.9 ppb, above EPA’s health benchmark.
1 health-based violation since 2016
- Open report
Quail Valley Utility District
Texas · serves 14,409 people · about 5,000 in Missouri City
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 15.7 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
First Colony MUD 9
Texas · serves 7,818 people · about 4,200 in Missouri City
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 17.6 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Blue Ridge West MUD
Texas · serves 7,545 people · about 4,100 in Missouri City
3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 17.7 ppb, above EPA’s health benchmark.
4 health-based violations since 2016
- Open report
Sienna MUD 10
Texas · serves 7,824 people · about 4,000 in Missouri City
1 result above EPA’s health benchmark. The worst: Lithium at 19.2 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Sienna MUD 3
Texas · serves 7,365 people · about 3,900 in Missouri City
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 25 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
City of Missouri City
Texas · serves 4,847 people · about 3,200 in Missouri City
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 16.4 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Fort Bend County MUD 26 Quail Green West
Texas · serves 5,424 people · about 2,900 in Missouri City
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 17 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Fort Bend County WCID 2
Texas · serves 49,173 people · about 2,800 in Missouri City
3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 25.3 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Sienna MUD 4
Texas · serves 6,435 people · about 2,700 in Missouri City
Nothing in its records is above a health goal.
No health-based violations since 2016
5 more utilities in Missouri City
By EPA’s estimate, each serves fewer people in Missouri City than those above.
- Fort Bend County MUD 23serves 13,695 people · about 2,600 in Missouri City · no health-based violations since 2016
- Sienna MUD 12serves 4,311 people · about 2,400 in Missouri City · no health-based violations since 2016
- City of Missouri City Mustang Bayou Wateserves 9,147 people · about 2,400 in Missouri City · no health-based violations since 2016
- Fort Bend County MUD 42 Wat Platserves 4,395 people · about 2,300 in Missouri City · no health-based violations since 2016
- Thunderbird Utility District 1serves 4,203 people · about 1,800 in Missouri City · no health-based violations since 2016
MUD stands for municipal utility district, a local water and sewer district common in Texas.
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in City of Houston’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead, Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Lead, Arsenic
Water testing near Missouri City
The 3 labs Texas certifies closest to Missouri City, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Eurofins Xenco, LLC -Houston
Stafford, TX · about 5 miles
Certified for lead and copper
ALS Laboratory Group, Environmental Services Division – Houston, Texas
Houston, TX · about 8 miles
Certified for lead and copper
Envirodyne Laboratories, Inc.
Houston, TX · about 8 miles
Certified for bacteria, lead and copper
Texas Well Owner Network, Texas A&M AgriLife Extension: Well Informed screening events, where well owners bring in water samples to be screened for common contaminants, followed by an hour-long session explaining the results. Upcoming events are on the network's calendar. Trainings, Texas Well Owner Network.
All 80 certified labs for TexasWhich ZIP codes are in Missouri City: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: TCEQ, drinking water laboratories approved for public water system samples; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Missouri City
Other towns in Fort Bend County with a page of their own.
What to do next
- Read City of Houston’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About LithiumWhat it does to health, where it comes from, and the certification claim that addresses it.About Lithium
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water