Water sources can be anything from a mud puddle to the ocean. Throughout the United States there are many ways to get water for survival. You can even get water from plants.
Check out what companies in your area are permitted to discharge waste water in your local water source by using the EPA search widget below.
Hopefully your homestead has a well or a good source of running water. It not, you may need to consider storing your water. Storing water can be tricky if you don't do it correctly. Water grows bacteria as it sits. You should also have your water storage area in a shady area. Direct sunlight on a storage container will increase algae and other bacteria. Also, plastic containers can release toxins and brake down if kept in direct sunlight.
Survival water filters.