What can be a consequence of not maintaining backflow prevention devices?

When backflow prevention devices are not properly maintained, one significant consequence is the potential formation of cross-connections. This occurs when there is a reversal in the direction of water flow, allowing contaminated water from non-potable sources to mix with the clean drinking water supply. This situation poses serious health risks as it can lead to the introduction of harmful pollutants, chemicals, or pathogens into the potable water system.

Maintaining backflow prevention devices is crucial in ensuring that any backflow is effectively stopped, thus safeguarding the water supply from contamination. Therefore, without regular maintenance, these devices may fail to function properly, increasing the likelihood of cross-connections and the adverse effects associated with them.