We should make sure to point out that collecting rainwater can be very helpful. However, this will truly depend on your location. Places near China or Russia will often have acidic rain that will actually make rain and even snow turn orange from pollutants in the environment. If you are not near a plant of some kind or in a badly polluted environment, you can collect rainwater to use for a variety of things.
The obvious thing to use it for is to hydrate yourself, plants, and even animals. The water can be used for showering, laundry, and much more too. We’d still recommend boiling the water, and not letting it sit out in an open place. Those who collect rainwater will usually have it in a large barrel or can that will be completely closed. This helps in two ways. First, it keeps animals from contaminating it and it’ll keep the water from evaporating in hotter environments.