Well Water Interpreter
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Private well answer guide

Well Water Test Results: Red Flags to Review First

Review bacteria, nitrate, arsenic, lead, uranium, PFAS, and other health contaminants first. Then handle taste, odor, staining, hardness, and appliance issues.

Search: well water test results red flagsUrgency: Soon

Tests to run

  • Bacteria
  • Nitrate
  • Arsenic
  • Lead
  • PFAS
  • Uranium
  • pH
  • Hardness

Next steps

  • Separate health-based results from aesthetic or maintenance results.
  • Check units before comparing results to limits.
  • Use alternate water for urgent bacteria, nitrate, lead, or high arsenic concerns until confirmed.
  • Track results over time to find trends and treatment failures.

FAQ

Which well water result is most urgent?

E. coli present, total coliform positive, nitrate above the limit for infants, and lead or arsenic concerns are commonly reviewed quickly.

Are taste and odor results less important?

They can matter, but taste and odor do not prove whether water is safe or unsafe. Lab results drive health decisions.

Download iOS App

Interpret once on the web. Track forever in the app.

Save test history, set annual reminders, compare results over time, and create a shareable report.

Download the iOS app

Educational guidance only. Always confirm important decisions with a certified laboratory, local health department, qualified water treatment professional, or clinician.