Simple Smelly Water Fix

I visited a customer today with a rotten egg smell in their water.  There was a cartridge pre-filter and a water softener.  After a little investigation I found that the water coming out of the well tank, which precedes any water treatment, had no odor.  I then opened the pre-filter and found that the cartridge was covered with an almost clear slimy substance.  That was the source of the odor.

The filter is collecting some sort of organic material from the well and it is decomposing and giving off a rotten egg odor.  In this instance, the customer needs to change the cartridge more frequently or have an automatic backwashing filter installed to prevent the organic material from sitting long enough to decompose.

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