Rainwater can contain a variety of contaminants that can make it unsafe to drink, according to the Centers for Disease Control and Prevention. Instead, rainwater can be used for cleaning, bathing and even watering plants.
Collecting and using rainwater can be an excellent way to reuse natural resources and to conserve water, but some states do not allow the collection of rainwater. These include Colorado, Texas and Virginia. Rainwater may also contain bacteria, parasites, viruses and chemicals that can make a healthy person sick. It has also been linked to disease outbreaks in some areas. The risks of getting sick from rainwater depend on a number of factors, including how often it rains in a particular area.