Privacy Policy
Last Updated: September 2026
1. Our Privacy Commitment
At watersoftenercalc.com, we believe trade and engineering utilities should not track users. Our calculations execute 100% inside your local browser runtime. Your household demographics, water hardness data, and plumbing parameters are never stored on or transmitted to our servers.
2. Local Storage and Client-Side State
We do not collect personal identification information (PII). No user accounts or advertising cookies are utilized. We use standard browser localStorage solely to remember your preferred visual theme setting (dark or light mode).