Water Treatment Plant Old Highway 75 Sloan, IA 51055 Phone : (712) 428-3841 Business Category Regulation & Admin Of Communications Electric Gas & Other Utilities Sloan City Of--water Treatment Plant Sloan, IA 51055 Phone : (712) 428-3841 Business Category Government Offices-City Village & Twp Plumbing Heating Equipment & Supplies Business Services Water Filters & Purification Equipment Water Softening & Conditioning Equipment Water Treatment Service General Business Services Government Offices State & Local Government Offices & Public Schools