In July 2001, the Unified Sewerage Agency renamed itself as Clean Water Services at a cost of $60,000. Clean Water Services' Operations Building opened in 2003, which is used as a showcase of low impact development. The same year, the Administrative Building Complex opened. It was the first LEED Gold certified public building in Washington County. In 2004, the agency began a program to add shade along the watershed's streams and river by planting trees and shrubs to lower temperatures of the waterways. This program received approval from environmental regulators and was in lieu of spending $150 million to build chilling systems at the four treatment facilities.