They tend to be corrosive to wiring/pipes/etc and reported to cause respiratory problems.

Corrosion in outside older breaker box can contribute.

All all of the fixtures have been replaced in the last year oh where the copper touches the steel there is a green corrosion to it.

It is corrosive and not good for lawns/plants so use only what you need.

Maybe the decommissioned tank is the issue given the basement was flooded, probably with salt water, which is corrosive, get it removed. how big is the oil spill?

I had the line cameraed and it showed that there is extensive corrosion of the pipes. 

Copper pipe installed incorrectly in concrete (like many were years ago) have a corrosion problem.

If you can keep the thing together for ten years your doing better than most with that corrosive chloride sodium slurry they coat the roads with around here for 8 months of the year!

Power trains don't wear out like they used to and corrosion is the real enemy.

And the city offers a program to basically add it to the property taxes for the next 10 years.The issue in Flint BTW was not just the lead pipes as some posts suggested, but the fact that they switched to cheaper river water, which is industrially polluted and corrosive.