The City of Sunset Valley's annual consumer confidence report describes the overall quality of water delivered at your tap. The U.S. Environmental Protection Agency (EPA) requires that all drinking water suppliers provide a water quality report to their customers on an annual basis. 

The City of Sunset Valley purchases water from the City of Austin who uses the Lower Colorado River as a source of drinking water.  For more information on the water coming from the City of Austin please visit their website here.