A sump pump would be used to drain leakage in the basement, not sewage.

I tighten the nut, the water leakage stopped. 

Depending on the area, the city/county health inspector may actually choose to be there for the removal (not fun), but in our cases there was no leakage.

And some fiberglass or,  better, rockwool insulation to fill up weight cavities in old sash windows.I know the salesman who came out and carefully measured your windows before giving you a quote offered you a careful spiel about thousands of dollars of possible leakage and damage and insurance and a bunch of other vague warnings.

A basement may be used for habitable rooms or a dwelling unit, regardless of the depth of the floor below grade, if the floors and walls are impervious to leakage of underground and surface water and are protected from dampness, and if the required minimum 13-172-130, or by other approved means. 13-172-070 Natural light.

Check your roof and windows for signs of leakage.  

I was told that there is nothing in Fl. law that prohibits these tanks, but any leakage violates state & federal health statutes.

Fire X Lightning X Explosion (includes Sonic Boom and Water Hammer) X Windstorm and Hail X Smoke X Aircraft and Vehicles X Riot or Civil Commotion X Volcanic Action X Sprinkler Leakage X Sinkhole Collapse X Vandalism/ Malicious Mischief Where Special Form covers all of these plus a few others you may want.Falling ObjectsWeight of Ice & SnowWater DamageTheftCollapseThere are many cases where going with Basic Form makes sense and other where Special Form may be a better choice. 

Hi,The timber frames and carpet around the bathroom entrance are damaged caused by the leakage from the showers.

Major Concerns:Unit Mix - all 1 unit apartments - small size / you will hit a rent limitRoofs - When was it last replaced Plumbing - Type of plumbing, galvanized pipesBathrooms - Leakage Water issues - pipes, leakage HVAC DrivewayMoldDon't under estimate the cost of the above 4.