A linking arrangement between two or more potentially incompatible piping systems is a setup where potable water could become contaminated. This scenario allows non-potable substances to enter the drinking water supply. For instance, if a hose connected to a garden sprinkler system is submerged in a container of fertilizer solution, and a drop in water pressure occurs, the fertilizer solution could be drawn back into the household plumbing.
Eliminating these arrangements is crucial for protecting public health and maintaining water quality. Historically, outbreaks of waterborne illnesses have been traced back to such vulnerabilities. The cost of remediating a contaminated water system, both in terms of financial resources and public trust, is significantly greater than the effort required to prevent their occurrence in the first place. Prevention ensures a safe and reliable source of drinking water for all users.
