Is Altus, OK tap water safe?
The short answer
2 of the 2 utilities serving Altus have a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Oklahoma’s records: Altus and Altus AFB.
Altus, which serves the most people here, has 1 result above the legal limit. The worst: Total trihalomethanes (TTHM) at 98.2 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 Altus’s ZIP codes, from EPA’s estimates.
- Open report
Altus
Oklahoma · serves 18,717 people · about 1,600 in Altus
1 result above the legal limit. The worst: Total trihalomethanes (TTHM) at 98.2 ppb, above the legal limit.
26 health-based violations since 2016
- Open report
Altus AFB
Oklahoma · serves 4,617 people · about 180 in Altus
1 result above the legal limit. The worst: Total trihalomethanes (TTHM) at 126 ppb, above the legal limit.
23 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 Altus’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Aquasana Clean Water Machine (AQ-CWM2)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM)
Brita Hub Countertop Water Filter System (87340)
Countertop
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
- IAPMO listing:NSF/ANSI 53checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM)
Ninja HydraSense Countertop Water Filtration System (WF1001)
Countertop
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 401checked Oct. 9, 2026
Certified for: Total trihalomethanes (TTHM)
Water testing near Altus
TapBuff hasn’t read Oklahoma’s list of certified labs yet. The national page links every state’s own list.
Certified labs, state by stateWhich ZIP codes are in Altus: 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.
What to do next
- Read Altus’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