OH · 88 COUNTIES
Certified labs and testing options for private well owners in Ohio.
Private well owners in Ohio are responsible for the safety of their own water. The EPA recommends testing annually for coliform bacteria and nitrate, and whenever a change in water quality is noticed. For contaminants common in Ohio — such as Chloride, Fluoride, Iron — additional targeted testing is advisable.
Mail-in certified lab testing. Results in 5–7 business days. Best for comprehensive private well testing.
Order a Tap Score Test →Contact your state drinking water program for a list of certified labs in Ohio.
Based on Ohio groundwater data, the most common contaminants in private wells are:
Browse the county directory to see specific contaminant data for your area.