If there is low water pressure after an emergency, what is the concern?

• A. Air leaks in pipes
• B. Breaks in pipes and cross-contamination
• C. Contamination from the water heater
• D. Free chlorine residual is too high

Answer: (B)

A drop in pressure in the water system after an emergency signals a real risk of contaminants getting into the supply through damaged pipes and connections. When pressure falls, water can be drawn backward through any cracks or breaks in the distribution system and through improper connections between potable and non-potable sources. This back-siphonage and cross-connection create a pathway for contamination to enter the public water supply, which is why breaks in pipes and cross-contamination is the primary concern in this scenario.