Free well water tools

Simple tools that run in your browser. Nothing you type is sent to us. They help you plan and read tests; they don't replace a certified lab or your health department.

• Which test do I need?Answer a few questions and get a list of tests to ask a certified lab for, with sources.
• Results readerType in numbers from your lab report and compare them with EPA and Health Canada limits.
• Shock chlorination calculatorHow much bleach to disinfect your well, using extension service formulas.
• Testing reminders (.ics)Download calendar reminders for yearly well testing. Works with iPhone, Google and Outlook calendars.
• Nitrate and bacteria safetyWhat a nitrate or coliform result means for your family, and what to do next.

We don't offer a cost estimator yet because we don't have verified lab prices. Ask labs on your state page for current prices.