Is Southwest Sandhill, TX tap water safe?
The short answer
Neither of the 2 utilities serving Southwest Sandhill has 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 Monahans, which serves the most people here, has 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 43 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 Southwest Sandhill’s ZIP codes, from EPA’s estimates.
- Open report
City of Monahans
Texas · serves 6,953 people · about 360 in Southwest Sandhill
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 43 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Southwest Sandhills WSC
Texas · serves 2,354 people · about 100 in Southwest Sandhill
Nothing in its records is above a 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 City of Monahans’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 Southwest Sandhill
No lab Texas certifies is within 75 miles of Southwest Sandhill on the state’s list. Some take samples by mail; the state’s page lists them all.
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 Southwest Sandhill
Which ZIP codes are in Southwest Sandhill: 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.
Near Southwest Sandhill
Towns nearby with a page of their own.
What to do next
- Read City of Monahans’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