Is Catalina, AZ tap water safe?
The short answer
1 of the 6 utilities serving Catalina has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and CDC’s records: Coronado Forest Drive Water Coop.
Lago del Oro Water Company, 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 20 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 Catalina’s ZIP codes, from EPA’s estimates.
- Open report
Lago del Oro Water Company
Arizona · serves 18,132 people · about 710 in Catalina
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 20 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Cs Los Cerros Water Company Inc
Arizona · serves 2,613 people · about 120 in Catalina
Nothing in its records is above a health goal.
No health-based violations since 2016
- Open report
Goodman Water Company
Arizona · serves 2,668 people · about 110 in Catalina
1 result above the health goal. The worst: Arsenic at 3.0 ppb, above the health goal.
No health-based violations since 2016
- Open report
Gw Ocotillo Water - Catalina
Arizona · serves 1,102 people · under 100 in Catalina
1 result above the health goal. The worst: Arsenic at 1.7 ppb, above the health goal.
No health-based violations since 2016
- Open report
Orchard Valley Mobile Home Park
Arizona · serves 130 people · under 100 in Catalina
1 result above the health goal. The worst: Lead at 4.5 ppb, above the health goal.
No health-based violations since 2016
- Open report
Coronado Forest Drive Water Coop
Arizona · serves 34 people · under 100 in Catalina
1 result above the health goal. The worst: Lead at 1.3 ppb, above the health goal.
1 health-based violation since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Lago del Oro Water Company’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 Catalina
The 3 labs Arizona certifies closest to Catalina, 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 29 miles
Complete Analytical Services, LLC
Tucson, AZ · about 29 miles
Legend Technical Services of Arizona, Inc. DBA Legend Analytical
Tucson, AZ · about 29 miles
ZIP codes in Catalina
Which ZIP codes are in Catalina: 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 Catalina
Other towns in Pinal County with a page of their own.
What to do next
- Read Lago del Oro Water Company’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