Drinking Water Infrastructure Needs Survey and Assessment: Sixth Report to Congress [open pdf - 2MB]
"The U.S. Environmental Protection Agency's (EPA's) sixth national assessment of public water system infrastructure needs shows a total 20-year capital improvement need of $472.6 billion. This estimate represents Drinking Water State Revolving Fund (DWSRF) - eligible infrastructure projects necessary from January 1, 2015, through December 31, 2034, for water systems to continue to provide safe drinking water to the public. The national total comprises the infrastructure investment needs of the nation's approximately 49,250 community water systems (CWSs), 21,400 not-for-profit noncommunity water systems (NPNCWSs), American Indian water systems and Alaska Native Village water systems. The findings are based on the 2015 Drinking Water Infrastructure Needs Survey and Assessment (DWINSA or Assessment), which relied primarily on a statistical survey of public water systems. [...] The results of the Assessment are used to allocate the DWSRF capitalization grants to the states for their DWSRF programs and to the EPA regional offices for American Indian and Alaska Native Village systems. The reported projects may be needed to address existing infrastructure that is deteriorated or undersized, ensure compliance with regulations, provide system resilience, improve energy efficiency, or improve cost effectiveness. Cost estimates reflect comprehensive construction costs including engineering and design, purchase of raw materials and equipment, construction and installation labor, and final inspection."
U.S. Environmental Protection Agency: https://www.epa.gov/