privatewelldata / States / Arizona
Arizona well water testing
2 labs are listed on Arizona’s official certified-lab list. Updated 2026-10-17.
Official lab list for Arizona
Where the labs are
| Town | Labs |
|---|---|
| Phoenix | 2 |
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See all 2 Arizona lab listings →
How to choose a lab
- Pick a lab on the official list above that is certified for each test you need (bacteria and chemistry are often separate certifications).
- Ask for the lab’s own sample bottles and instructions; bacteria samples usually must reach the lab within 24–30 hours.
- Compare prices for a basic package (bacteria, nitrate, pH/TDS) and add arsenic or other metals where local data shows a risk.
- Be wary of free in-home tests from treatment-system sellers — see our salesperson checklist.
Questions
Where can I get my well water tested in Arizona?
Use a lab on Arizona’s official certified-lab list. We count 2 listed labs (excluding those marked as serving public water systems only), most in Phoenix. Confirm the lab is certified for the exact tests you need before you send a sample.
What should I test my well for in Arizona?
Test every year for bacteria (total coliform and E. coli), nitrate, pH and total dissolved solids (CDC). Use our test helper for a list that fits your home.