- Publication Date
- 2017-10-18
- Start Date
- 2015
- End Date
- 2017

Ayotte, J.D., Medalie, Laura, and Qi, S.L., 2017, Estimated county level domestic well population with arsenic greater than 10 micrograms per liter based on probability estimates for the conterminous U.S.: U.S. Geological Survey data release, https://doi.org/10.5066/F7CN724V.

Arsenic concentrations from 20,450 domestic wells in the U.S. were used to develop a logistic regression model of the probability of having arsenic > 10 µg/L (“high arsenic”). We use only domestic well arsenic data and a national-scale modeling approach. This approach expands our understanding of potential exposure to arsenic in drinking water to a national scale and allows inter-regional comparisons. Variables representing geologic sources, geochemical, hydrologic, and physical features were among the significant predictors of high arsenic. For U.S. census block groups, the mean probability of arsenic > 10 µg/L was multiplied by the population using domestic wells to estimate the potential high-arsenic domestic-well population. Approximately [...]

- County level domestic well population with arsenic greater than 10 micrograms per liter based on probability estimates for the conterminous U.S.
- Probability of arsenic concentrations greater than 10 micrograms per liter in groundwater used by domestic wells in the United States
- Variables used as input to a logistic regression model to estimate high-arsenic domestic-well population in the conterminous United States, 1970 through 2013

This dataset shows county-wide estimates of population with arsenic concentrations greater than 10 micrograms per liter.

- USGS Data Release Products
- USGS New England Water Science Center