If you live in an area that is prone to backups or flooding, then you need to take precautionary steps to avoid a sewer or drain backup! This can be done by plugging you drains, or there are also a multitude of other options. Also, you may not even have to plug your drains because many new homes come with anti-backflow or backwater check valves installed in the main sewer line to prevent the chance of a backup. These valves are designed to stop backflow but they may still fail, so it is up to you if you want to still go through with plugging your drains. It is always a good idea to annually check your valves to make sure that they are free of debris and are in good working order. If your home already has a backwater check valve, it can usually be located near the main sewage cleanout. If your home is older, than it is a good idea to call a licensed plumber and have a check valve installed.
If you do not have a check valve, than you may want to plug your drains. Here are a couple types of drain plugs that may be convenient for you:
-Test Ball: It is generally used for pressure-testing plumbing systems but will work in an emergency to seal a drain. Install the ball into the drain and inflate it to the air pressure that is recommended. From there, no water will be able to flow in or out.
-Twist Plug: Insert into the pipe and twist the wing nut until the plug is tight. Twist plugs come in a variety of shapes and sizes and work great for toilets, showers, and floor drains.
-Pressure Plugs: These are conical-shaped rubber or wooden plugs. They are larger on one side than they are the other, and they will need to be forced into the pipe. They may even need to be braced to prevent extra pressure that will force them out.
-Threaded Screw Caps: You will need to remove the plumbing fixture and replace it with the correct sized cap.
These are just a couple kinds of caps you can use to plug your drains if you are worried about backup. If you would rather not do this on your own, you can always call for the help of a licensed plumbing professional! It is always beneficial to know the plumbing systems in your home and have a general understanding of how they work.