About Arizona Well Water
This site exists because finding clear, reliable information about well water quality in Arizona is harder than it should be.
Over 300,000 Arizonans get their drinking water from private domestic wells. Unlike public water systems, these wells aren't monitored or regulated by any government agency. Well owners are responsible for testing their own water and understanding the results — but the information to do that is scattered across government PDFs, academic papers, and water treatment company sales pages.
We built Arizona Well Water to put the most important information in one place: what contaminants are common in your area, where to get tested, what your results mean, and what your options are if something comes back high.
What This Site Is
- A starting point for understanding your well water
- Community-specific guides based on local geology, real water quality data, and government sources
- Links to certified testing labs, state programs, and treatment companies
- Plain-language explanations of Arizona's Basin and Range geology, aquifer systems, AMA regulations, and well permitting
- A public information resource — not a sales funnel
What This Site Is Not
- A substitute for actual water testing (every well is different)
- Professional advice about your specific well or water system
- Affiliated with any government agency, water treatment company, or testing lab
Our Sources
The data on this site comes from government and academic sources, including:
- United States Geological Survey (USGS) — groundwater studies, arsenic modeling, aquifer characterization
- Arizona Department of Environmental Quality (ADEQ) — groundwater quality monitoring, basin assessments, Aquifer Water Quality Standards
- Arizona Department of Water Resources (ADWR) — well permits, AMA management, groundwater data
- Arizona Department of Health Services (AZDHS) — drinking water lab certification, private well guidance
- University of Arizona Water Resources Research Center (WRRC) — arsenic research, county water fact sheets
- University of Arizona Cooperative Extension — well owner guides, contaminant fact sheets
- Environmental Protection Agency (EPA) — contaminant standards, private well guidance
- Arizona Geological Survey — earth fissure mapping, geological context
We cite specific sources on each page. If you find an error or have better data, we want to know.
Every well is different. Two wells on the same street can have completely different water quality. The only way to know what's in your water is to test it.
Contact
Have questions, corrections, or suggestions? Reach us at hello@azwellwater.com.