The American National Standard for Emergency Eyewash and Shower Equipment, ANSI Z358.1-2004, is published under the auspices of the Industrial Safety Equipment Association (ISEA). A most important requirement of the standard reads: “Medical recommendations suggest a flushing fluid at tepid temperatures to be delivered to chemically injured tissue.” “Tepid” is defined in the standard as “moderately warm; lukewarm.”

Long employed as water treatment for healing purposes, hydrotherapy - the use of water in the treatment of disease - has been around since ancient times. The Egyptian, Greek, Roman, Hindu and Chinese cultures favored hydrotherapy for centuries, and its value is recognized today