This checklist is for private well owners. The owner is responsible for testing and treatment.
Yearly baseline
Run the yearly tests CDC and EPA recommend: total coliform bacteria, nitrates, total dissolved solids, and pH. If you want a step by step overview, see how to test well water.
Retest triggers
Test again after flooding, land disturbance, nearby waste disposal, well repairs or replaced parts, changes in taste, color, or smell, or when someone becomes pregnant or a child joins the household. For ongoing upkeep, see well water maintenance.
How to use the checklist
Use it to tick off each test, print it for your records, and add reminders to your calendar. If you want a place to track results, use the well water test log template.
Where to send samples
Check your state health department or a state certified lab for current testing options. EPA says private well owners should confirm the current lab list on the state page before choosing a lab.
Keep the results
Save each report with the date and test name so you can compare results over time. You can also track them in well water log or learn more about Septic & Well.
This is not a lab result and not a safety clearance for drinking water. Use a certified laboratory and your state well program.