Is Mount Calm, TX tap water safe?
The short answer
1 of the 2 utilities serving Mount Calm has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Texas’s records: Birome WSC.
Birome WSC, which serves the most people here, has 1 result above the legal limit. The worst: Arsenic at 9.9 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 Mount Calm’s ZIP codes, from EPA’s estimates.
- Open report
Birome WSC
Texas · serves 2,018 people · under 100 in Mount Calm
1 result above the legal limit. The worst: Arsenic at 9.9 ppb, above the legal limit.
9 health-based violations since 2016
- Open report
City of Mount Calm
Texas · serves 474 people · under 100 in Mount Calm
1 result above the health goal. The worst: Arsenic at 6.9 ppb, above the health goal.
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Birome WSC’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Arsenic
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: 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: Arsenic
Water testing near Mount Calm
The 3 labs Texas certifies closest to Mount Calm, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Bio-Chem Lab, Inc.
West, TX · about 12 miles
Certified for bacteria, lead and copper
Environmental Monitoring Lab
Hillsboro, TX · about 24 miles
Certified for bacteria
Tarrant County Public Health Laboratory
Fort Worth, TX · about 72 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 TexasZIP codes in Mount Calm
Which ZIP codes are in Mount Calm: 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 Mount Calm
Towns nearby with a page of their own.
What to do next
- Read Birome WSC’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for ArsenicRanked by certification and what they cost over five years.The best reverse osmosis systems, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water