Certified labs by state
Indiana
Indiana directs private well owners primarily to the Indiana Department of Health for testing guidance and certified laboratory lookup, while the Indiana Department of Environmental Management publishes statewide groundwater monitoring maps and results. Official Indiana guidance says private well water is unregulated for homes and recommends routine testing, with additional help available through county health departments and the Indiana DNR well-record system.
Checked against official sources on October 4, 2026. Rules and links change; confirm with the office listed before you act.
- Certifies drinking water labs
- Indiana Department of Health Laboratories, Drinking Water Laboratory Certification program
- Official certified lab list
- Official page →
- Free or low-cost testing
- IDEM’s Statewide Groundwater Monitoring Network conducts free testing for selected residential wells, but the public signup page says the signup period is closed.
Official resources in Indiana
Main Indiana private-well guidance page with risk information, recommended tests, and links to certified labs and support organizations.
Official IDOH page listing recommended private-well tests, testing frequency, and the state lab’s homeowner test options.
State certification page for drinking-water labs, including Indiana’s certified-lab finder and out-of-state approved labs.
Publishes Indiana groundwater monitoring results, including statewide nitrate and arsenic maps from residential-well sampling.
Lets residents search official Indiana well records and view mapped well information useful for eligibility and well-history checks.
Key facts for Indiana
- IDOH recommends private well water be tested annually for bacteria and nitrate.
- IDOH recommends testing at least every 5 years for fluoride, arsenic, lead, and copper, or whenever major well maintenance is done.
- IDOH says glacial deposits of arsenic exist throughout Indiana.
- IDOH says bacteria and nitrates are commonly linked to human or animal waste, failing septic systems, large herds of animals, and landfills.
- IDEM’s groundwater network publishes statewide nitrate and arsenic maps based on sampling of private residential wells.
- IDOH says radium is naturally occurring in drinking water because it is present in most major rock types found in Indiana.
What to do next
- Start with the IDOH Well Water page, then use the certified-lab finder to choose a lab approved to analyze Indiana drinking water.
- If you have a private well, do the annual bacteria and nitrate tests first, then add the 5-year fluoride, arsenic, lead, and copper panel.
- Check the Indiana DNR Water Well Record Database for your well log; it can help with troubleshooting and with eligibility for IDEM groundwater-monitoring programs.
Helpful guides
- How to choose a state-certified drinking water lab
- What to test your private well water for (and how often)
- How to collect a well water sample without ruining the test
- How to read a water test report: MCLs, units and flags