Of course, if it concerns water, that is an emergency.

Two rentals I have, the water has to be in the owner's name.

Seminole for Example has a lot of great traffic and tons of spots to eat, drink, socialize for adults and kids.I know Cape Coral is picking up in terms of STR's with the complettion of the 7 Mile Island and more construction lately. 

If one system malfunctions, you'll be out of the water.

Also utilities and sitework should be less as you do not need to bring in two electrical services, water services and run two sewer services and connection fees.

Stop hanging out with your deadbeat buddies who spend all day drinking, talking sports, and otherwise wasting away.

Is it not problem that they do not have enough water. 

Stop hanging out with your deadbeat buddies that spend all day drinking, talking sports, and otherwise wasting away.

Roll it into the rent with a lease clause that anything over $X is split 50/50 between both tenants and you don't care who uses more water...In short, spend some money and make it a legal duplex or at least make it two separate units.

Food, water, shelter, the fundamental human needs.