They are very low water consumption and work great. https://www.homedepot.com/p/205611735

The only thing I get concerned about is whether people feel like other tenants are not doing their part to curb consumption.

I inherited a white trash pit, and I will sell it as an upgraded and throughly pretentious white trash pit to a person who grew up with parents who rode the debt/consumption treadmill all their lives and who will look at this new place approvingly and tell their son or daugter that "you've done well for yourself, we see."

Installing individual meters for each unit and letting tenants handle their own consumption might be one strategy.

This approach encourages them to be mindful of their consumption and find ways to reduce utility usage, ultimately leading to lower bills.

., with some of the cost going toward food consumption. 

Ultimately they will need some servicing but minimal as they are fixed systems built to be outdoors and degradation is less than 1% per year and guaranteed by manufacturers for 15-20 which is standard.You are able to give the tenants an electricity credit if the system produces 100% of the expected consumption.

If you sell and take RMD in cash there's no requirement that you spend it on consumption either.