Compare like with like
A free service-line inventory cannot replace a laboratory water test. IsMyWaterOK only calculates savings when two options answer the same question.
Narrow the panel before shopping
The address result identifies the contaminants or infrastructure questions that deserve attention, so users can request itemized prices instead of automatically buying the largest package.
Look for public programs first
Utilities, county health departments, and state programs may provide information or testing at lower cost. The household plan puts those options before private paid testing when they are truly comparable.