Is Three Points, AZ tap water safe?
The short answer
None of the 11 utilities serving Three Points has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records.
City of Tucson, 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 63.7 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 Three Points’s ZIP codes, from EPA’s estimates.
- Open report
City of Tucson
Arizona · serves 732,906 people · about 660 in Three Points
3 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 63.7 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Metropolitan Dwid - Lazy B
Arizona · serves 77 people · under 100 in Three Points
2 results above the health goal. The worst: Arsenic at 1.8 ppb, above the health goal.
No health-based violations since 2016
- Open report
Gw Ocotillo Water - Diamond Bell
Arizona · serves 649 people · under 100 in Three Points
2 results above the health goal. The worst: Arsenic at 3.6 ppb, above the health goal.
No health-based violations since 2016
- Open report
Thim Water Company 2
Arizona · serves 247 people · under 100 in Three Points
1 result above the health goal. The worst: Arsenic at 3.1 ppb, above the health goal.
No health-based violations since 2016
- Open report
Metropolitan Dwid - E&T System
Arizona · serves 880 people · under 100 in Three Points
2 results above the health goal. The worst: Arsenic at 1.9 ppb, above the health goal.
No health-based violations since 2016
- Open report
Gw Ocotillo Water - Valley View Acres
Arizona · serves 458 people · under 100 in Three Points
2 results above the health goal. The worst: Uranium at 27 ppb, above the health goal.
No health-based violations since 2016
- Open report
Thim Utility Company
Arizona · serves 310 people · under 100 in Three Points
2 results above the health goal. The worst: Arsenic at 4.9 ppb, above the health goal.
No health-based violations since 2016
- Open report
Wildflower Water Coop
Arizona · serves 157 people · under 100 in Three Points
1 result above the health goal. The worst: Arsenic at 5.5 ppb, above the health goal.
No health-based violations since 2016
- Open report
Thim Utility Company - Well 9
Arizona · serves 254 people · under 100 in Three Points
2 results above the health goal. The worst: Arsenic at 4.3 ppb, above the health goal.
No health-based violations since 2016
- Open report
Gw Saguaro Dist Water Co - Amber Ann
Arizona · serves 93 people · under 100 in Three Points
1 result above the health goal. The worst: Arsenic at 6.3 ppb, above the health goal.
No health-based violations since 2016
1 more utility in Three Points
By EPA’s estimate, each serves fewer people in Three Points than those above.
- Worden Water Companyserves 60 people · under 100 in Three Points · 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 Tucson’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, Lead
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, 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: Arsenic, Lead
Water testing near Three Points
The 3 labs Arizona certifies closest to Three Points, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Turner Laboratories, Inc.
Tucson, AZ · about 30 miles
Complete Analytical Services, LLC
Tucson, AZ · about 30 miles
Legend Technical Services of Arizona, Inc. DBA Legend Analytical
Tucson, AZ · about 30 miles
Which ZIP codes are in Three Points: 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: Arizona Department of Health Services, Arizona certified commercial drinking water laboratories; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Three Points
Other towns in Pima County with a page of their own.
What to do next
- Read City of Tucson’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