Nitrate concentrations in wells in crystalline rock aquifers
![Graph showing nitrate concentrations in wells in crystalline rock aquifers](https://d9-wret.s3.us-west-2.amazonaws.com/assets/palladium/production/s3fs-public/styles/full_width/public/media/images/nitrate_concentrations_web.png?itok=bzZqOnx5)
Detailed Description
Distribution of percentages of water samples with concentrations of nitrate greater than 1 milligram per liter collected from public-supply and domestic wells in New England crystalline rock aquifers, by categories of well depth and casing length, 1995–2007. This figure demonstrates that nitrate concentrations in water samples collected from bedrock aquifers are likely related to characteristics of the sampled wells, which in turn might be related to income (people with more wealth can generally afford deeper wells).
Sources/Usage
Public Domain.