Backflow is a potentially hazardous condition where contaminated water flows back into a home’s potable water supply due to a pressure change. This can happen if the pressure in the water supply drops below the pressure in the home’s plumbing system. It can also occur when a cross-connection between the home’s water supply and a contaminated source is occurs.
Backflow can occur due to a variety of factors, including:
1. Cross-connections – This typically occurs when a line from a public water supply is connected to a line from a potentially contaminated source, such as an irrigation system or a swimming pool.
2. Back-siphonage – This occurs when there is a sudden drop in the pressure of the public water supply, which causes contaminated water to be sucked back into the home’s plumbing system.
3. Backpressure – This occurs when the pressure of the home’s plumbing system is higher than the pressure of the water supply.
The potential risks of backflow include contamination of a home’s potable water supply with bacteria and other contaminants, as well as potential health risks to those using the water.
How do you prevent backflow in a home’s plumbing system?
Backflow prevention devices are the best way to prevent backflow in a home’s plumbing system. These devices are typically installed on the main water line and work by creating a one-way valve that only allows water to flow in one direction, preventing any potential backflow from occurring.
It is also important to regularly inspect pipes and connections for any potential cross-connections that could lead to backflow. It is also recommended that your home’s plumbing system be tested for backflow on a regular basis, generally every three to five years. Some municipalities may require backflow testing for certain types of plumbing systems.
Is there a risk of backflow with water wells?
Yes, there is a potential backflow risk for homes with water wells. While the risk is generally lower than for homes connected to a public water system, it is still important to be aware of the potential for backflow if you have a well. The main risk comes from contaminants entering the well water if it is not properly sealed and maintained. To prevent contamination, it is important to have the well inspected and tested on a regular basis and to have a backflow prevention device installed to prevent any potential backflow.
Grand Lake Plumbing and Heating can inspect your home’s plumbing system and water well to ensure there are no conditions where backflow can occur. Call us today to schedule a plumbing system inspection and backflow test.
