There have been nearly two dozen pay bathhouses operating at the same time, with about nine of those within the park's "Bathhouse Row." (Facilities have been reworked over the years, and the Quapaw operate a bath incorporating two previously separate bathhouses). Nine of the bathhouses were associated with hotels, hospitals, or sanatoria. The water is the same for all, but the prices charged for the baths have varied according to the equipment, accommodations and services offered by each facility. The charges for the services of the attendants are the same and include the necessities except towels, blankets, bathrobes, laundering, rubbing mercury, and handling of invalids.