Is Mont Belvieu, TX tap water safe?
The short answer
8 of the 15 utilities serving Mont Belvieu 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 Mont Belvieu, Coles Crossing, Barrow Ranch and 5 more.
City of Mont Belvieu, which serves the most people here, has 1 result above the legal limit, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Total trihalomethanes (TTHM) at 69.6 ppb, above the legal limit.
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 Mont Belvieu’s ZIP codes, from EPA’s estimates.
- Open report
City of Mont Belvieu
Texas · serves 12,864 people · about 980 in Mont Belvieu
1 result above the legal limit, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Total trihalomethanes (TTHM) at 69.6 ppb, above the legal limit.
5 health-based violations since 2016
- Open report
Gray Utility Service
Texas · serves 8,004 people · about 790 in Mont Belvieu
1 result above the limit’s level with no violation recorded and 1 result above EPA’s health benchmark. The worst: Total trihalomethanes (TTHM) at 94.6 ppb, above the limit’s level, no violation.
No health-based violations since 2016
- Open report
Chambers County MUD 1
Texas · serves 2,500 people · about 420 in Mont Belvieu
1 result above the health goal. The worst: Lead at 1.2 ppb, above the health goal.
No health-based violations since 2016
- Open report
City of Baytown
Texas · serves 86,004 people · about 310 in Mont Belvieu
1 result above EPA’s new limit, which takes effect in 2029 and 1 result above the health goal. The worst: PFOS at 6.0 ppt, above EPA’s new limit, which takes effect in 2029.
No health-based violations since 2016
- Open report
Coles Crossing
Texas · serves 1,521 people · about 280 in Mont Belvieu
1 result above the legal limit and 1 result above the action level. The worst: Copper at 2.2 ppm, above the action level.
4 health-based violations since 2016
- Open report
Plantation on Cotton Bayou
Texas · serves 1,557 people · about 240 in Mont Belvieu
1 result above the health goal. The worst: Arsenic at 3.6 ppb, above the health goal.
No health-based violations since 2016
- Open report
Barrow Ranch
Texas · serves 774 people · about 160 in Mont Belvieu
1 result above the health goal. The worst: Lead at 0.81 ppb, above the health goal.
1 health-based violation since 2016
- Open report
Tower Terrace
Texas · serves 768 people · about 150 in Mont Belvieu
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
City of Dayton
Texas · serves 15,393 people · under 100 in Mont Belvieu
3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 16.5 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Bayridge Subdivision Water System
Texas · serves 234 people · under 100 in Mont Belvieu
1 result above the legal limit. The worst: Total trihalomethanes (TTHM) at 72.7 ppb, above the legal limit.
16 health-based violations since 2016
5 more utilities in Mont Belvieu
By EPA’s estimate, each serves fewer people in Mont Belvieu than those above.
- Bay Place Subdivision theserves 132 people · under 100 in Mont Belvieu · 4 health-based violations since 2016
- River Oaks Subdivisionserves 234 people · under 100 in Mont Belvieu · 2 health-based violations since 2016
- Carriage Trail Subdivisionserves 96 people · under 100 in Mont Belvieu · no health-based violations since 2016
- Olsen Estates Water Systemserves 174 people · under 100 in Mont Belvieu · 2 health-based violations since 2016
- Ocean Mobile Home Parkserves 347 people · under 100 in Mont Belvieu · 1 health-based violation 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 Mont Belvieu’s water, which serves the most people here. Another utility’s report names what handles its own results.
Disclosure: TapBuff earns a commission if you buy through some links on this page. It does not change which standard or filter we name. As an Amazon Associate, TapBuff earns from qualifying purchases. How TapBuff makes money
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: Total trihalomethanes (TTHM), Arsenic, Lead
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: Total trihalomethanes (TTHM), Arsenic, Lead
Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Total trihalomethanes (TTHM), Arsenic, Lead
Water testing near Mont Belvieu
The 3 labs Texas certifies closest to Mont Belvieu, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
A & B Environmental Services, Inc.
Houston, TX · about 24 miles
Certified for bacteria, lead and copper
City of Houston Health Department, Bureau of Laboratory Services
Houston, TX · about 34 miles
Certified for bacteria
Water Utility Services, Inc.
Spring, TX · about 37 miles
Certified for bacteria
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 Mont Belvieu: 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 Mont Belvieu
Other towns in Chambers County with a page of their own.
What to do next
- Read City of Mont Belvieu’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About Total trihalomethanes (TTHM)What it does to health, where it comes from, and the certification claim that addresses it.About Total trihalomethanes (TTHM)
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water