I did something a little weird for water temp in the winter for my 11x14 print washer. I added 50' of tubing to the print washer feed line. I feed that extra line through two jerry cans and filled with water, which stays at room temperature. I get 70 degree wash water all the time for about $8.00 in materials, as I already had a couple old jerry cans. Yeah OK......I'm cheap.
This is inspired! It's the same "mechanism" that refrigerators use to supply cold water out of the door.
What is the lowest temp of your water coming in?
And, I would expect that the same set-up would cool down the 85 degree water I get in the Summer.
David Taking pictures is easy. Making photographs is hard.