Free ASSE 5110 Backflow Tester Flashcards

The distinction is the effect on people. A high hazard connection could allow a substance that is toxic, poisonous, noxious or unhealthy to enter drinking water, so a health hazard would exist. A low hazard substance only degrades appearance, taste or usefulness. A solvent can make people ill, so the connection is rated high and needs the strongest protection the situation calls for.