When you own a commercial building, it's up to you to ensure the health and safety of others. Ensuring potable water is sanitary and free of contaminants is especially important, as unclean water can cause a number of health issues. Backflow testing ensures the water in your building is acceptable for drinking and other uses. This guide illustrates why testing is so important. 

What Is Backflow?

Backflow is the process of water flowing back into the wrong plumbing lines. This can occur when there is a drastic change in water pressure, which may send water flowing in the opposite direction. As water flows backward, there is a risk it will pick up harmful contaminants along the way. Backflow sometimes happens because of a burst water main. It can also occur if a fire hydrant is being used to extinguisher a fire somewhere nearby. 

Different water lines are used to carry clean water and wastewater. There may be cross-connections at some points, which put clean water lines at risk should backflow occur. 

What Is a Backflow Preventer?

A backflow preventer creates a barrier to prevent water from flowing in the wrong direction. These devices use double check valves, which offer increased protection against backflow. In the event one valve fails, the other will still be able to stop the backward flow of water. Closing off one valve can also reduce pressure within plumbing lines. 

How Does Backflow Testing Work?

Most commercial buildings are required to have backflow testing performed at least once per year. The plumber conducting the test will check valves to ensure they are functioning correctly to prevent reversed water streams from entering potable water lines. The plumber will also use a gauge to check the pressure within plumbing lines. 

A reliable plumbing company can test backflow preventers and perform repairs if needed. The team at Edwards Plumbing, Heating, & Cooling offers backflow testing to business owners throughout Mentor, OH. They will ensure that your drinking water remains safe year-round. Schedule an appointment at your business by calling (440) 276-3190. You can also learn more about backflow testing by visiting them online.