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Officials explain backflow-preventer rules and testing requirements for irrigation and hot tubs
Summary
Utility/health presenters said backflow preventers (double-check assemblies) are required for non-air-gapped irrigation, hot tubs and similar devices on community water systems; they described testing, exemptions for individual wells and why the devices matter for contamination prevention.
A utility/health presenter (Speaker 12) explained why backflow prevention devices are required for irrigation systems, hot tubs and other non-air-gapped connections to the community water system: without them, contamination (including E. coli or listeria) can be drawn back into the source during firefighting or pressure events. "The backflow preventer is designed to stop that from happening," the presenter said while describing how a double-check valve assembly and annual testing protect the distribution system.
Board members raised practical concerns about how homeowners determine whether they need a device and where to find testing services. The presenter confirmed testing ports and certified technicians are required and noted exemptions apply only to individual private wells; residents were told the utility can provide information and that consultants (e.g., Mark Fung mentioned by a resident) can inspect household systems and recommend corrective action.
