Sounds clever! I like the idea of extracting the heat and moisture from the dryer to use on the washer, too.
The county seat (Monroe) has enacted water usage limits with *large* fines if citizens go over the limits, which are set by household, no matter how many people are at the address. Fortunately, we're not in that situation here, yet, but I suspect it's coming.
For future planning, should the opportunity arise, it is possible to capture rainwater in a cistern for domestic use. One advantage of rainwater is its soft nature. That is, it does not have dissolved minerals as ground water has in many areas. Clothes come out better, and many people prefer it for hair-washing.
“This Old House” showed how to put a diverter in a rainspout to fill a barrel, which subsequently slowly irrigated a flower bed. The principle is the same, and the technology is hundreds of years old.
Many islands use the system of rain capture, because they do not have the water resources to ignore this bounty.