Check your water quality by ZIP code
How hard is your water, and what's in it? Find out in seconds, free.
Enter your ZIP code to see how hard your water is, what's in it, and which system fits your home.
- Instant
- Free
- From your utility's own reports
From local utility reports and our own lab results. A free water test gives the exact number for your home.
Want the answer for your home?
Tell us your ZIP code and a rep calls you within 5 minutes to answer every question. No pressure, no sales visit.
You're probably on this page because:
- You've never looked at your city's water report
- You're not sure if your water is hard
- You want to know what your city adds to the water
Your city publishes the data. We make it readable.
Water reports, by the numbers
- Every year: community water systems must publish a water quality report.
- Nearly 2 in 3 people have never had their water tested.
Sources: EPA Consumer Confidence Report rule; WQA 2025 via WCP.
Your instant water report
[ZIP code tool: hardness, disinfectant, notable results, recommended system, link to city page.]
Life with it vs. without
| Without it | With it |
|---|---|
| Never knowing what's in your water | Your water, in plain English |
Our take
How to read your city's water report
The question we get asked most about this, after [thousands] of installs:
Every water utility publishes a yearly report, called a Consumer Confidence Report. They're long and full of abbreviations. Here's what to look for:
Hardness, often in mg/L or ppm (divide by 17.1 for grains). Disinfectant: chlorine or chloramine. MCL, the legal limit, next to the level detected. And new PFAS results, which utilities are reporting more of now.
Remember: the report shows water at the plant and in the system. Your own pipes can still add things like lead in older homes. That's what a home test catches.
Our own lab, 20+ years of water testing
Your sample goes to our own lab.
- 20+ years in water
- Our own patents
- We supply other water companies
- [Thousands] of systems sold
- Licensed installers
Related Pages
Questions people ask
How do I find my water quality by ZIP code?
Enter it above, or check your utility's yearly report.
Is the ZIP report accurate for my house?
It reflects your utility's data. A home test shows your own tap.
What if I'm on a well?
Utility data won't cover a private well. Get a free well test.
Where does the data come from?
Utility water reports and public data sources.
Is it free?
Yes.
What is a Consumer Confidence Report?
The yearly water quality report every community water system publishes.