How Does Your Home’s Water Really Score?
Arizona tap water can look clear and still be loaded with hardness minerals, chlorine, and dissolved solids. Our local team tests your water for free, gives you a simple score, and explains what it means for your family, your plumbing, and your appliances.
- 100% Free Test
- Results in About 20 Minutes
- Locally Owned in Mesa
- No Pressure, No Obligation
What's really in your water?
Answer a few quick questions about your home and we'll estimate your Hydrology Water Score, then show you exactly what's pulling it down.
Heads up: your Water Score email may land in your spam or promotions folder. If you don't see it in a few minutes, check there.
Where does your home's water come from?
Three easy steps. Know your water.
- 01
Pick a time that works
Fill out the short form and choose a visit at home, or drop a water sample off at our Mesa water store.
- 02
We test your tap water
A Hydrology water specialist checks hardness, chlorine, total dissolved solids, and pH right in front of you.
- 03
Get your water score
See how your water stacks up, what it is doing to your home, and your options, with a written quote if you want one.
The East Valley’s hardest water, ranked.
Very hard water starts at
10.5 gpg
Every city on this list reaches it.
- 01Tempe8–33 gpgThe highest groundwater hardness readings reported in the East Valley, and several contaminants above EWG health guidelines.
- 02Mesa12–25 gpgThe city’s own 2025 report puts the eastern and southern zones at about 16 gpg on average, well into “very hard.”
- 03Scottsdale12–20 gpgConsistently near the top of Arizona hardness surveys, the kind of water that leaves scale on every fixture.
- 04Chandler10–20 gpgVery hard water, and a large utility with health based violation points in EWG’s tap water database.
- 05Gilbert6–21 gpgHardness swings with the season as more groundwater is blended in over the summer, with violation points on record too.
Ranges are compiled from city water quality reports and independent hardness surveys. Hardness changes by neighborhood and season, which is why we test the water at your tap.
Frequently asked questions.
Still wondering about something? Call us at (602) 560-4107.
Book your free water quote today.
Find out what is in your water and what it would take to fix it. Free, quick, and no pressure.