BAYPLUMBING COMPANY has served Dade County’s residential, commercial, and industrial
plumbing needs since 1968. We are a full service plumbing and septic
company offering 24-hour emergency service. BACKFLOW BOB INC. is Bay Plumbing's division specialized in Backflow preventers Certifications and testing and repair. Our Certified professionals have the experience to test, repair and maintain residential and commercial backflow preventers in Miami-Dade.
A backflow prevention assembly is used to protect water supplies from contamination or pollution.
In water supply systems, water is normally
maintained at a significant pressure to enable water to flow from the tap,
When pressure fails or is reduced as may happen if a water main
bursts, pipes freeze or there is unexpectedly high demand on the water system,
the pressure in the pipe may be reduced and may allow contaminated water from
the ground, from storage of from other sources to be drawn into the system.
prevent such an occurrence, many regulatory regimes require there to be an air
gap or mechanical backflow prevention assembly between the delivery point of
mains water and local storage or use Where submerged
mains inflow is permitted a backflow prevention assembly is required.
way the backflow prevention assembly protects the potable water system from
contamination hazards which can be severe. There are over 10,000 reported cases
of backflow contamination each year Some cases can be fatal.
Miami-Dade as well as many other municipalities in the Unite States require annual testing of backflow prevention assemblies.
A check valve is a common form of backflow
prevention. In most cases, the law requires a double check (DC), an Reduced
Pressure Principle Device (RP) device or an air gap when
backflow prevention is mandated.
Cross-connection control is the effort to control interconnections between drinking water supplies and non-potable substances or sources. Cross-connection control programs have been a part of water and health agency programs for decades. A concern of many agencies has been household cross-connections. Although many haven’t considered the hazards in households to be a major area of concern, it has, for the most part, remained an unknown factor in the cross-connection control field.
The US Environmental Protection Agency (EPA) had funded an epidemiology study (the Water Evaluation Trial, or WET Study) to determine the health effects of a home water treatment unit on the residents of approximately 400 homes in four contiguous urban/suburban communities in the US Mid West. All of the WET study participants lived in single-family homes. One of the concerns, which arose, was the possibility that the water could have been pure water when delivered to the residence, but could have become contaminated through cross-connections on the premises. This question, in turn, led to the funding of this study, wherein approximately 200 of the above mentioned homes were surveyed to determine whether the potential for cross-connections in the home existed and to assess whether cross-connections in the home could result in exposure to contaminants that would cause diarrhea or gastrointestinal illness, with the health effects being measured in the WET Study.
Backflow prevention illustration
wikipedia image and information
In this situation, dirty water from the hillside pool will back siphon or back flowdown the hosepipe and into the clean water tank. To prevent this from happening, the house's external tap should be fitted with a backflow prevention device.