Up until a couple of months ago, the water usage was typical, I think around 8,000 gallons but then it spiked to over 64,000 gallons. 

In cleveland the water co website will actually track usage by the hour.

What are the cost considerations from the system to installation to usage bill?

(I'm cheating and not too inappropriately stuffing this post with keywords in the hope that someone in the Pittsburgh area has notifications set up and sees this). 

Space heater usage when tenants pay for heat but not electric is also real!

I asked him about water usage in the Las Vegas valley and learned that about 80% of the total water consumed is for irrigation in private homes, mostly watering grass.

You simply have to figure out the expected fuel usage and factor it into your rents.

To correctly evaluate such an option, one would need to know your tax rate, expected expense ratio on the property, goals for income usage personally either after-tax or when and how you plan to take retirement plan distributions, etc.I can state that since you are looking to pay all cash, there is effectively no difference between the IRA and 401k options.  

If I purchase a multi-family in my own name, can I still use many of the tax deductions (repairs, home office, mileage, utilities, internet usage, etc) come tax season.

Also, it is often tiered with lower rates per thousand gallons for relatively low usage, but can escalate dramatically for high usage (heavy lawn/landscape watering, pool refills, leaky toilets, etc.),  Sewage is usually a multiplier of the water usage.