FAQ
Backflow Prevention FAQ
Potable water stays safe when backflow assemblies stop reversals—testing proves they’ll work when asked.
What is backflow?⌄
Undesired reversal of non-potable fluid into drinking piping—pressure drops or backsiphon events trigger risks.
Why required?⌄
Codes protect public health—irrigation, boilers, chemical mop sinks, and fire lines commonly mandate assemblies.
Testing frequency?⌄
Annual is typical locally for many assemblies—your notice letter or AHJ sets clock.
Testing cost drivers?⌄
Accessibility, assembly size, freeze protection enclosures, re-testing after repairs.
Common device types?⌄
DCVA, RPZ, PVB families address different hazard levels—installation must match hazard ratings.
Installation process?⌄
Isolation, orientation, relief discharge routing, winterization strategy—documented for inspectors.
Commercial vs residential?⌄
Higher hazard facilities concentrate RPZs and documented logs—multi-meter campuses coordinate schedules.
Certification expectations?⌄
Missouri recognizes certified testers—records flow to water purveyor programs.
Maintenance beyond testing?⌄
Rubber wear, freeze splits, and vandal tampering happen—plan periodic visual inspections.
Hard water wears heaters and fixtures faster across the Ozarks—see our Hard Water & Softening FAQ for the full picture.
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