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.

https://klcjournal.com/in-dealing-with-the-ogallala-aquifer-western-kansas-is-running-out-of-water-and-time/#six

Below are two links that are interesting and fun to check out and understand the effort behind delivering water to the faucet. 

https://water.usgs.gov/edu/

https://www.epa.gov/ground-water-and-drinking-water/drinking-water-activities-students-and-teachers