A watershed is a drainage basin that collects precipitation which eventually drains to a common water body (e.g., stream, lake, wetland). Precipitation in a watershed may also sink into the earth to become groundwater. Depending on where you live, most of the water you drink comes from watersheds!
Methane in Groundwater
Iron & Sulphur Bacteria:
Iron and Sulphur in Water Wells
Livestock – Salinity (CSU)