; and (2) in the second sentence, by inserting before the period at the end the following: unless the project requires those facilities to deliver the alternative water supply . (d) Authorization of appropriations Section 220(i) of such Act (as so redesignated) is amended by striking $75,000,000 for fiscal years 2002 through 2004 and inserting $150,000,000 for fiscal years 2018 through 2020 . 2008. Water system mitigation and adaptation grants (a) Grants Beginning in fiscal year 2018, the Administrator shall make grants to owners or operators of water systems to address any ongoing or forecasted (based on the best available research and data) climate-related impact on the water quality or quantity of a region of the United States, for the purposes of mitigating or adapting to the impacts of climate change. (b) Eligible uses In carrying out this subsection, the Administrator shall make grants to assist in the planning, design, construction, implementation, or maintenance of any program or project to increase the resilience of a water system to climate change by— (1) conserving water or enhancing water use efficiency, including through the use of water metering; (2) preserving or improving water quality, including through measures to manage, reduce, treat, or reuse municipal stormwater, wastewater, or drinking water; (3) investigating, designing, or constructing groundwater remediation, recycled water, or desalination facilities or systems; (4) enhancing green infrastructure in the management or treatment of water, wastewater, or stormwater; (5) enhancing energy efficiency or the use and generation of low-carbon energy in the management, conveyance, or treatment of water, wastewater, or stormwater; (6) supporting practices and projects, such as improved irrigation systems, groundwater recharge, stormwater capture, and reuse or recycling of drainage water and groundwater, to improve water quality or promote more efficient water use, including on land currently in agricultural production