This 2-hr class will discuss the backflow of contaminated water through cross-connections into community water systems, which is a common problem.
Contamination through cross-connections has consistently caused more waterborne disease outbreaks in the United States than any other reported factor.
Cross connections commonly occur in these types of situations:
– A sprinkler system using non-potable water is connected to a potable water supply.
– A potable water source used as a seal supply is connected to a pump delivering unapproved or non-potable water.
– A hose connected to a house is left in a swimming pool. When water is drawn from indoor taps, the hose sucks the pool water into the potable water supply.
– A hose connected to a house is used to apply chemical fertilizers or pesticides. Without a vacuum breaker or other backflow-prevention device at the house connection, the chemicals enter the potable water supply.
– A hose connected to a house is used to flush a car radiator. If the hose is left in the radiator after it has been filled with antifreeze, and there is no backflow protection at the house connection, the antifreeze will enter the potable water supply.
The State Water Board has approved this webinar for 2 contact hours or 0.2 CEU.