Private Well Water Testing in Delaware
County-by-county USGS area-risk estimates for private wells across Delaware — arsenic exceedance probability and private-well population — plus how to test your own well at a Delaware-certified laboratory.
Delaware private-well risk summary
Counties covered
3
Delaware counties with modeled risk data.
People on private wells
area estimate141,361
estimated across covered Delaware counties.
Average arsenic risk
area estimate3%
average modeled chance a well exceeds 10 µg/L arsenic across covered counties.
Delaware counties
Find a Delaware-certified testing lab
Get your well tested at a Delaware-certified laboratory. We list certification programs by state.
These figures are USGS area estimates: statistical groundwater models describing how likely elevated contaminant levels are across a county. They are not designed to predict the concentration in any single well. Only testing your own well reveals its water quality.
By TapWaterData Editorial
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