Free water tools
Put real numbers on your water
Every calculator runs in your browser — nothing you type is stored or sent anywhere.
Tool 1
Lead risk self-check
Five questions. This estimates the likelihood that lead could reach your tap — only a lab test can confirm it.
Tool 2
Water hardness converter
Tool 3
Leak cost calculator
Tool 4
Bottled vs. tap cost
Tool 5
Household water use estimator
Tool 6
Water softener payback
Savings model: avoided scale-related costs (water-heater energy and lifespan, appliance repairs, cleaning products, spotting) scaled to hardness and household size. It's a planning estimate, not a quote.