Surge For Water: https://surgeforwater.org/donate/
Generosity.org: https://generosity.org/donate/
Pure Water for the World:t.purewaterfortheworld.org/give/298381/#!/donation/checkout
Charity Water: https://www.charitywater.org/donate
Take shorter showers
Turn off water when brushing your teeth
Fix household leaks
Use and install water saving appliances (water saving shower head, toilet)
Use Eco-friendly cleaning products
Meatless Mondays
Take a look at this info-graphic for more ideas and information.
Source: Johnson, Steve, et al. “Save Water: Reduce Your Water Footprint: Development.” RESET.to, en.reset.org/act/save-water-reduce-your-water-footprint.
Find Your Water Footprint Here! www.watercalculator.org/
A crucial way to help fight this crisis is to further your own education on the issue and understand how you are contributing to the problem. Here are some books, movies, and articles that will help you learn more.
When the River Runs Dry (Fred Pearce)
Water: The Epic Struggle for Wealth, Power, and Civilization (Steven Solomon)
Cadillac Desert: The American West and Its Disappearing Water (Marc Reisner)
A Thirsty Land (Seamus McGraw)
Blue Covenant: The Global Water Crisis and the Coming Battle for the Right to Water (Natalie Ellis)
Explained: World Water Crisis (Netflix)
HOME (Yann Arthus-Bertrand)
*Not solely on water, but important to watch*
The Future of Water (Quartz)
Living Without Water (Real Stories)
How the City of Big Shoulders Addresses the Global Water Crisis (Surge for Water)
United Nations Water Scarcity Page
A Quarter of Humanity Faces Looming Water Crises (New York Times)
Mapping the strain on our water supply (The Washington Post)
Visit Surge for Water's website.
My advice here is to actively search for articles. There is a lot of information out there at our fingertips. Use it!