About Water Hardness Lookup
Last updated: 2026-07-11
What We Do
Water Hardness Lookup is a free online tool that helps you check water hardness levels for your area and learn about water treatment options. All calculations and lookups run instantly in your browser — no account required, no personal data collected.
Our Mission
We believe water and home information should be accessible to everyone. Government data, regulations, and technical specifications are often buried in hard-to-navigate sources. Water Hardness Lookup consolidates this information into a single, easy-to-use tool that gives you answers in seconds.
How It Works
Enter your details and get results immediately. Our calculations are based on publicly available data from official sources. We regularly review and update our data to ensure accuracy.
Data Sources
Our data comes from authoritative public sources, including:
- USGS water quality data
- EPA drinking water standards
- Municipal water quality reports (CCR)
Who Runs This Site
Water Hardness Lookup is part of Niche Tools, an independent project built and maintained by Adam B., a Brooklyn-based developer. Niche Tools builds free, focused reference tools that turn scattered public data — government tables, municipal codes, agency datasets — into answers you can actually use. There is no staff of ghostwriters and no AI-spun filler: each site is built from primary sources, and we cite them.
Editorial Standards
Every data point on this site traces back to a public primary source. When we summarize regulations or statistics, we link the official source so you can verify it yourself. When something is not specified in the source material, we say "not specified" rather than guessing. If you find an error, please report it — corrections ship quickly.
Important Disclaimer
The results provided by Water Hardness Lookup are estimates for informational purposes only. They are not a substitute for professional advice. Always consult a qualified professional before making important decisions based on these results.
Privacy
We take your privacy seriously. Water Hardness Lookup does not collect personal information, require sign-ups, or sell data. Calculator inputs are processed entirely in your browser. Read our full privacy policy for details.
Contact
Have a question, found an error, or want to suggest an improvement? We'd love to hear from you — use the contact form and we'll get back to you.