Physical ability to perform the essential functions of the job, including: Swim 300 yards continuous using 100 yards crawl stroke, 100 yards breast stroke and 100 yards crawl or breast stroke; Swim 20 yards and retrieve 10-pound object from 6 feet and return 20 yards holding object at surface with both hands placing object on deck and climbing at side of pool within 1 minute and 40 seconds; Recover 10-pound object from 12 feet in dive tank and place object on deck; Tread water for 2 minutes using legs only with arms crossed on chest; Recover manikin from bottom of pool and remove from water; Perform 1 minute of CPR on manikin recovered from water. Ability to effectively communicate to exchange information, dexterity of hands and fingers to operate pool maintenance equipment, visual ability to read and analyze chemical tests, ability to sit or stand for extended periods of time, ability to kneel, crouch, or bend at the waist to conduct tests, lift patrons, or materials of 50 lbs.