Perplexing black on floor tile after showering


  #1  
Old 04-26-17, 06:03 AM
T
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Perplexing black on floor tile after showering

After using the shower I notice black footprints on the floor tile where water dripped while toweling. I see nothing in the shower or around the sink after washing.

I have a well and had nothing out of range although manganese was above the median. One other option is charcoal from the water softener but I don't think the water actually comes in contact with the charcoal. I have copper pipes but the shower itself may not be copper.

Any thoughts?
 
  #2  
Old 04-26-17, 08:10 AM
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If you have a charcoal water filter your water comes in contact with it. Have you changed the filter recently or done work on the filter?
 
 

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