What we do
We turn basic household and water-test inputs into transparent planning estimates for hardness, softener load, flow and treatment sequence.
What we do not do
We do not test water, diagnose health risks, design plumbing, certify products or replace a laboratory, licensed plumber, professional engineer or qualified water-treatment professional.
Editorial principle
Calculations should still be useful if every shopping link disappears. Recommendations are based on the user's inputs and published standards/guidance, not on which merchant pays the highest commission.