by its appearance.
- Does Water That Has Been Sitting in the Pipes Become Unsafe?
Water that remains inside pipes for several hours is sometimes described as stagnant water.
This can happen overnight when nobody uses the taps or when a particular faucet is rarely opened.
During this time, water remains in contact with the internal surfaces of the plumbing. Depending on the pipe materials and conditions, certain substances may enter the water, and microorganisms can sometimes grow inside plumbing systems.
This does not mean that water becomes dangerous every time