Is Coolidge, AZ tap water safe?
The short answer
4 of the 8 utilities serving Coolidge have 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 Eloy, Arizona Water Co - Tierra Grande, Whispering Wind Mobile Home Park and 1 more.
Arizona Water Co - Pinal Valley, which serves the most people here, has 1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 353 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 Coolidge’s ZIP codes, from EPA’s estimates.
- Open report
Arizona Water Co - Pinal Valley
Arizona · serves 134,432 people · about 5,800 in Coolidge
1 result above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 353 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
City of Eloy
Arizona · serves 8,999 people · about 140 in Coolidge
1 result above the legal limit, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Nitrate at 9.0 ppm, above the legal limit.
3 health-based violations since 2016
- Open report
Cca - Eloy Complex
Arizona · serves 8,852 people · about 110 in Coolidge
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 89.2 ppb, above EPA’s health benchmark.
No health-based violations since 2016
- Open report
Arizona Water Co - Tierra Grande
Arizona · serves 1,819 people · under 100 in Coolidge
1 result above the health goal. The worst: Arsenic at 4.9 ppb, above the health goal.
1 health-based violation since 2016
- Open report
Picacho Water Company
Arizona · serves 2,440 people · under 100 in Coolidge
1 result above the health goal. The worst: Arsenic at 6.2 ppb, above the health goal.
No health-based violations since 2016
- Open report
Whispering Wind Mobile Home Park
Arizona · serves 200 people · under 100 in Coolidge
2 results above the health goal. The worst: Arsenic at 2.7 ppb, above the health goal.
2 health-based violations since 2016
- Open report
Signal Peak Water Company
Arizona · serves 99 people · under 100 in Coolidge
1 result above the health goal. The worst: Lead at 0.7 ppb, above the health goal.
No health-based violations since 2016
- Open report
Arizona Training Program
Arizona · serves 470 people · under 100 in Coolidge
3 results above the health goal. The worst: Arsenic at 7.5 ppb, above the health goal.
2 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 Arizona Water Co - Pinal Valley’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 Coolidge
The 3 labs Arizona certifies closest to Coolidge, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Radiation Safety Engineering, Inc.
Chandler, AZ · about 33 miles
AnalysisNow! Inc.
Chandler, AZ · about 33 miles
Statewide Laboratory
Mesa, AZ · about 40 miles
Which ZIP codes are in Coolidge: 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 Coolidge
Other towns in Pinal County with a page of their own.
What to do next
- Read Arizona Water Co - Pinal Valley’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