The majority of people understand they shouldn’t drink untreated water from rivers, reservoirs and lakes. Many people, especially children, don't realize that secondary tap water isn't treated either.
It, too, can be a source of bacteria and disease when used inappropriately.
People are urged to use soap and wash with water from a treated or culinary source after coming in contact with secondary water.
Parents should also keep children from playing in sprinklers, wading pools or drinking from hoses if the source comes from secondary water.
Recreational water illnesses include a wide variety of infections, such as gastrointestinal, skin, ear, respiratory, eye, neurologic and wound infections.
The most commonly reported recreational water illness is diarrhea. Diarrheal illnesses are caused by germs such as cryptosporidium, giardia, shigella, norovirus and strains of E. coli, according to the Centers for Disease Control and Prevention.