This website is an excellent resource for how find and repair water leaks in your home and farm property, water efficiency and other resources. http://www.smarthomewaterguide.org/
Water use in the USA: https://water.usgs.gov/watuse/
Water use per state by category. https://owi.usgs.gov/vizlab/water-use-15/#view=KS&category=irrigation
Interesting article on the Ogallala Aquifier and the management of water resources.
Below are two links that are interesting and fun to check out and understand the effort behind delivering water to the faucet.