Private Well Water Testing in North Carolina

County-by-county USGS area-risk estimates for private wells across North Carolina — arsenic exceedance probability and private-well population — plus how to test your own well at a North Carolina-certified laboratory.

North Carolina private-well risk summary

Counties covered

100

North Carolina counties with modeled risk data.

People on private wells

area estimate

2,163,719

estimated across covered North Carolina counties.

Average arsenic risk

area estimate

average modeled chance a well exceeds 10 µg/L arsenic across covered counties.

North Carolina counties

Find a North Carolina-certified testing lab

Get your well tested at a North Carolina-certified laboratory. We list certification programs by state.

North Carolina certified labs

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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.

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By TapWaterData Editorial