Quote:
Originally Posted by stadtmkw
We were running both a whole-house softener and filter. Had to remove the filter because it took the chlorine out and that resulted in high bacteria counts at the sinks and refrigerator dispenser. Both aerobic and coliform bacteria were present. Went nuts tracing this down. Flushed entire system with bleach twice. Even went so far as to confirm that when the house was built, they did not plumb the irrigation water to the fridge. Not sure of the source of the bacteria as the raw incoming water tested fine for bacteria. Only solution found was to remove the Whirlpool whole-house filter, install a UV filter and allow chlorine to pass through system. Put the fridge filter back in service to handle drinking water.
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Even if the chorine is removed from the water there shouldn't be any coliform bacteria in the water. Before we moved to The Villages we had our own well with no filter or softener and no chlorine.
I had the water tested regularly and had a 0 coliform count, which is required for houses in MA. One time we did have non zero count and it turned out the be that the rubber gasket on the well head had deteriorated. After I replaced it I had to shock the well with bleach and then flush the system. Then coliform count went back to zero.
When you shocked the system with bleach did you open ever spigot (hot/cold even the ice/water in the fridge and the toilettes ) until it smelled of bleach, then close it, then let the bleach sit in the system for at least 24 hours? Just putting bleach in the system and then flushing right away won't kill the source of the bacteria.