1. A dread of consuming bad water or of being contaminated or infected in some way by it: Because of her cacohydrophobia, Evelyn always carried a bottle of juice with her in order to avoid drinking the impure liquid from a public fountain.
2. An abnormal fear of being exposed to water from the cloaca or waste pipes: Even though she enjoyed the walking tours of the large and ancient city, Lois would not go on the historical sewer walk because of her cacohydrophobia of the polluted liquid that was still there.