What is the potential cross-connection hazard from sprinkler systems?

Sprinkler systems, particularly those connected to the potable water supply, present a significant cross-connection hazard. A cross-connection occurs when potable water is connected to non-potable sources, creating a path for contaminants to enter the clean water supply.

In the case of sprinkler systems, if these systems are not properly installed and maintained, they can introduce chemicals, pesticides, or other hazardous materials back into the drinking water supply. This is particularly concerning in agricultural areas where irrigation or fire suppression systems may be used, potentially leading to contamination.

Additionally, if there is a drop in water pressure in the distribution system, it may allow contaminated water from the sprinkler system to be siphoned back into the potable water supply. Due to these risks, the potential for hazardous cross-connections in sprinkler systems is classified as high, necessitating strict adherence to regulations and guidelines concerning cross-connection control and water quality protection. This ensures public health and safety by preventing the potential backflow of contaminants into the drinking water system.