* Updates for this data series are no longer available from the U.S. Geological Survey.
Years Available: 1995
Permanent Link: http://data.sagepub.com/sagestats/6553
General Notes: *Median value gives the value for the "average" county for this metric, the 50th percentile of all counties reporting data. **Water that is on the Earth's surface, such as in a stream, river, lake, or reservoir. Water that contains less than 1,000 milligrams per liter (mg/L) of dissolved solids. Generally, water with more than 500 mg/L of dissolved solids is undesirable for drinking and many industrial uses.