when I look at todays temperatures it was a maximum of 12 deg C and a minimum of 2 deg C. Yes I think the neighborhood may prefer hot water over noise right now. Every single degree centrigrade warmer the water arrives, thats a calorie of energy per liter water saved on the energy bills.
Your observation has an N of 1… Texas is almost never as cold as today, even in December. Most of the year is 35 C to 40 C and the cold water supply is warm to the touch.