Answers you can compute beat answers you can only read. These tools apply the same engineering rules-of-thumb a good contractor uses — free, no signup.
Use the well water testing guide for lab-confirmed health concerns, or the well water problems guide to match symptoms to likely causes.
What’s Wrong With My Water?
Two questions to identify the likely cause of a smell, stain, or pressure problem — and the fix that matches it.
What’s Wrong With My Water?
Answer 2 quick questions to identify the likely cause — and the fix that matches it.
This tool suggests the most probable cause based on typical private-well patterns. It doesn’t replace a water test — for health concerns (bacteria, nitrates, lead, arsenic), always use a certified lab.
Sizing calculators
Pressure tank sizing, water softener grain capacity, and septic pumping frequency — three calculators, one page.
Well & Septic Sizing Calculators
Pressure tank sizing
Sizes the tank so your pump runs at least a full minute per cycle — the single biggest factor in pump lifespan.
Estimates for typical residential systems — manufacturer specs and local code take precedence. Full guides: pressure systems · softening · septic pumping.