People tend to waste a lot when everythings included, so this helps to avoid that problem.There are also companies out there that can install a meter in lieu of doing a full submeter to ascertain how much usage the unit is using monthly.

Tenants stopped paying electric and water.

Metron and Southern Water Management are two that we've been talking to.

In the desert it costs me LESS than $20 for water.

Don't forget to change all your faucet aerators and shower heads to low flow it makes a huge difference as well as far as water usage and saving HOT water. 

Each year they adjust it up or down based on actual usage of the previous year.Let's say you get an average of $600/month. 

Personal usage will limit the loss in 2023, as mentioned in the reply.

We have had many water leaks that have damaged the flooring.

After 2 years I have had to replace very few items, whether that be from theft, loss, or over usage. 

Without knowing all of your specifics, I'd say that it's only worth holding on to if you can reasonably expect to have some really good appreciation in the near future (like 5 yrs)....Or, in the case where it would run well as a vacation rental, you could switch the usage, maybe?