Faucet Water

Why is my tap water does not know more?
Of course, I will talk to my people about this apartment on Monday … However, I have curiosity if anyone else has experienced. My tap water almost looks like a mixture of water and milk for about five seconds, then it is obvious. You do not know what it is or what to do about it.
It's what's happening with two lines of hot and cold water? If that happens with hot water and then it's time for a new hot water tank. Sediments probably introduced in the bottom of the tank.