Reminds me of when I saw a Mountain Spring Water filling station ornamented with a picture of a snow-capped mountain at a Wal-Mart about 500 miles from the nearest mountain and nearly 2k miles from the nearest snow-capped mountain. The thing had pipes out the back going into the wall. That was straight city water that maybe that dispenser filtered a little more if it was properly maintained.
Nope. Especially not in Texas in the summertime. The pipes are close enough to the surface that they warm up (unless you have well water, which is always cold).
Thats definetely a health hazard. If the water stands long enough to get warm, it will get infected sooner or later.
Doesnt matter so much for the sistance between the main water pipe and your tap, byt after a holiday you should definetly let some water run until it comes out cold again.