Trusted Arborists in Springfield, MO

Backflow is the undesirable reversal of flow in a potable water distribution system through across-connection. A cross-connection is an actual or potential link connecting a source of pollu-tion or contamination with a potable water supply. Backflow may allow liquids, gases, nonpotablewater and other substances, from any source, to enter a public water system.

Backflow prevention protects public water systems from contamination or damage throughcross-connections located in customer facilities. Backflow prevention is typically achieved byplacing a backflow prevention assembly between the customer and the public water system. This is called containment backflow prevention.

Many businesses must have back flow prevention. Common examples are manufacturing andprocessing plants, medical facilities, laboratories (including school chemistry and biology labs),and buildings that have boilers, fire sprinkler systems and irrigation systems.

Under the Missouri rule, three types of back flow prevention assemblies are permissible for containment: air gaps, reduced pressure principle assemblies and double check valve assemblies. The type of assembly you need depends on the type of hazard present.

No. The required back flow prevention assembly provides containment and it protects the public water system from hazards in your facility. Cross-connections in your own plumbing may allow contaminants to back flow from hazardous processes to drinking water taps in your building.