Check well water quality across all 50 US states and 28,850+ ZIP codes. Analyze 20 contaminants with 1,000 water quality reports from EPA and USGS data.
Enter your ZIP code to see local well water quality, top contaminants, and testing costs.
28,850 ZIP codes with well water data available
% of wells exceeding EPA limits
#1 Iowa17.4%#2 Georgia15.8%#3 Missouri15.8%#4 Alabama15.4%#5 Colorado14.0%Lowest % of wells exceeding EPA limits
#1 North Carolina1.3%#2 New Mexico1.4%#3 Texas2.1%#4 Ohio2.5%#5 Virginia3.2%