fresh water that is above ground in lakes, ponds, rivers, and streams
Watershed
an entire area of land that is drained by a river
Groundwater
water that seeps down into the soil and stored underground water
Aquifers
large amounts of groundwater that is stored in underground rock formations
Water Pollution
the introduction of chemical, physical, or biological material into water that degrades the quality of the water and effects the organisms that live and drink from it
Pointsource Pollution
pollution that is discharged from a single source, such as a factory
Nonpointsource Pollution
pollution that comes from many sources rather than one
