REHS Exam 2023/24- Pool

Pool Design Basic - ANSWER-Minimum 60% of water recirculation from gutters and skimmers, capacity of skimmers and gutters between 100 to 125% of pump recirculation capacity, indirect water connection to pool water supply lines, deck drains and pool water drained via an air gap to the sewer system, and automatic chlorinator for all public pools. Contamination Sources for Pools - ANSWER-bodily discharges (urea, nitrogenous matter, ammonia, amino acids), oils, creams, lotions, dust, pollen, sabotage, airborne debris Staphylococcal & Streptococcal Species - ANSWER-Recreational water illnesses bacterial disease; most common pathogens causing sore throats, fevers, toxic shock syndrome, impetigo, scarlet fever, pneumonia, and wound infections. Chlamydiae trochomatis - ANSWER-RWI bacterial disease; Trachoma; a chronic or cyclic disease recycled from mom to children and in nurseries causing conjunctival scarring. typhoid fever - ANSWER-RWI bacterial disease: Salmonella typhi; reservoir is humans with transmission via food and water from fecal contamination, flies via mechanical, shellfish from sewage infested waters, and raw fruits and vegetables fertilized with night soil (aka human feces). Weil's disease - ANSWER-RWI bacterial disease; Leptospira spp. spirochete bacteria. From zoonosis (urine) of domestic and wild animals via skin and/or mucosal contact with lake, stream, canal, irrigation water, contaminated. Occupational hazard to rice and sugarcane field workers and other fresh water jobs. Reservoirs include rats, swine, cattle, dogs, and raccoons. Pseudomonas aeruginosa - ANSWER-RWI bacterial disease; one of two swimmers' itch; thermophilic; common to hot tubs; UTIs and URIs. Legionella pneumophila - ANSWER-RWI bacterial disease; aka Legionnaire's disease; pneumonia-like symptoms, 40% fatality. Transmission via inhaled droplets only. Reservoirs include hot tubs, cooling towers, warm ponds, and fountains Shigella sonnei and Shigella flexneri - ANSWER-RWI bacterial disease; Most common bacillary dysentery in US. Mycobacterium marinum - ANSWER-RWI bacterial disease; skin infection via open cut or sore; acquired via aquariums, fish handling and cool swimming pools.