Plumbing problems.
D015386:Hazardous Substances; D006436:Hemodialysis Units, Hospital; D006801:Humans; D016273:Occupational Exposure; D012498:Sanitary Engineering / Q000592:standards*; D014481:United States; D014865:Waste Disposal, Fluid / Q000379:methods*
D015386:Hazardous Substances