An essential measure to prevent backflow is the implementation of an air gap, creating a separation between the supply and receiving sides of a water line. This simple yet effective solution breaks the vacuum formed during a backflow situation, ensuring water doesn’t flow backward.
Plumbing codes mandate the use of air gaps for specific fixtures like dishwashers to safeguard against the backflow of potentially contaminated water into the clean water supply, preventing serious health risks. Without an air gap, improper plumbing or city main shutdowns can lead to wastewater siphoning into the drinking supply, posing severe dangers. Although rare, instances of hoses left in mud puddles or bleach water have resulted in fatalities. The plumbing code acts as a crucial safeguard, protecting the public from such hazards.
While fixtures like toilets, washing machines, and automatic dishwashers rely on air gaps, it’s important to note that these gaps can fail if flooded at any point.
