this lady has lost the sight in one eye after swimming with her contact lenses in.
Acanthamoeba is found in tap water/pool water/shower water and is not killed by chlorine. It's a rare infection but very painful and sight-threatening.
I warn all my contact lens patients about this but I know some are still very blase about it.
So best not to rinse lenses with tap water, swim or shower with them in.