In my area the growth and demand for a little land and fresh mountain clean air & water is exponential.  

With all the research Ive done regarding this area, I cant locate ANY information pertaining to the new water bill.Since I've only been a renter, I don't have the slightest idea of how much a water bill would be.

A tenant in my basement unit apt clogged the drain line (per plumber report) and water entered their unit in 2 rooms.

Again unless that is due to water damage or rot, the tenant would have caused this.As another person pointed out, now that they have raised flags you may have problems with an eviction as they will feel it is retaliatory. 

My overall check list when viewing a property consists of looking for major red flags, such as, damage to the roof, foundation/structural issues, holes in the wall, water damage, etc.

Water / Utilities - Will you be billing these costs back to the tenant? 

Because the water in Tampa Bay was full of sewage and it smelled awful on the Bayshore, all day long.

HOA of $263 per month, includes Water etc.

The lot is valued anywhere from 75k-200k, and has no septic permit, water well or tree clearing.

Get your furnace/AC/water heater etc. serviced on a regular basis.