Duane Arnold Mueller, 64, of Waterloo, passed away June 27, 2020 in Waterloo. The visitation will be from 4-8 p.m. on Wednesday, July 1 at Quernheim Funeral Home in Waterloo and from 9 a.m. until time of service on Thursday, July 2 at St. John United Church of Christ in Maeystown. The funeral service will be held at 10 a.m. on Thursday, July 2 at St. John United Church of Christ with Pastor Patrick Poole officiating. Burial will be at the church cemetery.