Wanted to get some possible opinions on a one time problem I've never been able to figure out. When I worked for a previous employer, I had a customer that had pink water. Bright pink in fact. It was a cabin in some remote woods she rented as a BNB. she had no iron, no manganese, no odor, and almost no hardness (also no permangenate), yet her water was noticably bright pink. The company tried to treat it with H2O2 injection to no effect. I've seen toilets and the occasional shower that get a pink residue, so I did some research and found out it's caused by a bacteria known as Serratia marcescens. it's an airborne bacteria that thrives in damp environments with little to no ventilation. apparently soap scum is another factor to it's production. The only thing I could figure is maybe air was being introduced in the well causing the bacteria? It bugs me I was never able to get a conclusive answer.
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