Can a Washing Machine and Toilet Share the Same Water Supply Line?

When it comes to plumbing construction, is it feasible to have a washing machine and toilet share a single water supply line? Let me provide a brief introduction.

一、Can a washing machine and toilet share a water supply line?

Yes. You can install a T-joint on the water supply line to connect both the toilet and the washing machine. Typically, household water pipes have a high pressure, so the washing machine can fill and the toilet can flush simultaneously without affecting daily use. When sharing a water supply line, it's best for the washing machine's inlet to be positioned higher than the toilet's tank, or you can install a check valve at the toilet to prevent backflow in case of a water shutdown.

二、What to take note of during household plumbing construction?

1、During plumbing construction, ensure that hot and cold water pipes are not placed in the same trench and are spaced at least 10 centimeters apart. If the hot water pipe is too close to the cold water pipe, it can affect the insulation of the hot water pipe. If extra cold water pipes are needed, hot water pipes may be used as a substitute, but hot water pipes should never be replaced with cold water pipes due to the lower heat resistance and thinner walls of cold water pipes, which increases the risk of cracking and leaking.

2、Avoid using a single water pipe to connect all outlets; long-distance connections can result in lower water pressure at the end of the pipe, affecting water usage. It's better to branch off multiple supply lines from the main water line to maintain sufficient water pressure. During construction, ensure that the specifications for the branch water pipes are lower than that of the main water line.

3、After plumbing construction is completed, do not seal or fill in the trench immediately. First, conduct a pressure test to check for any leaks in the pipes. The testing pressure is generally 8-10 kg, and after maintaining the pressure for 30 minutes, the drop should not exceed 0.5 kg. If leaks are found, promptly identify and repair the leaking points.

In summary：regarding the feasibility of a washing machine and toilet sharing a water supply line, I hope this overview provides helpful insights. For more related information, feel free to continue following Hawkrown.com.