Oooh, you're gonna like this little story..
A friend of mine moved into a house that had been a foreclosure. The previous owners stole all the light fixtures, major appliances, garage door openers, etc. Unfortunately, they didn't stop there.
The water smelled and tasted nasty, so he got it tested. It came showing high levels of bacteria, so he had the well shocked. It took several days for the water to stop reeking of chlorine, and it still tested high for bacteria.
They repeated this two more times with the same results before doing more detailed tests and finding that there were very high levels of bacteria only found in HUMAN FECES. Considering that the septic tank is 200 yards away and downhill, along with the previous owner's other actions, it's not hard to infer how that happened.
There was just so much bacteria that the chlorine barely made a dent in it. He ended up raising hell with the realtor and the bank that sold the house, and got a new well.
So be sure to retest your well!
