Percy Darryl Slattenow, 87, beloved husband, father, and grandfather passed away November 5, 2026, at Pinnacle Specialty Care, Cedar Falls. He was born October 29, 1939, son of Sanford Mander and Alma Caroline Augusta (Baack) Slattenow in Iowa City, IA. He graduated from Waterloo East High School in 1957, then served in the United States Navy as an Aviation Electronics Technician aboard several carriers.

Perc’s early jobs included helping with the family custodial business, caddying at the original Sunnyside Country Club, and working at the A&P Supermarket. He met Linda Carole Reed, the coworker who ended up being the love of his life, while working as an electric organ repairman at the Music Corner.

Perc was united in marriage to Lin on August 17, 1962 at Central Christian Church, Waterloo. His strong Christian faith began at an early age, and he was confirmed in the Lutheran Church, eventually becoming a member of Grace Evangelical Lutheran Church. Through the years, he crafted sanctuary banners, sang in choirs, and played in the handbell choir.

Perc began his career with the Iowa Public Service Company (IPS) on a power station switchboard, then worked as an electrical technician for many years before retiring as a combustion turbine specialist. He was a proud member and active in the International Brotherhood of Electrical Workers (IBEW). His electrical career, which occasionally caused him to work in the bowels of different facilities, spanned over 40 years and saw IPS undergo multiple mergers, ultimately becoming MidAmerican Energy.

While growing up, Perc developed a love of drumming, which likely spread joy to the neighborhood whenever he practiced, especially when the windows were open. He spent decades as a drummer in various bands, including the Lee Four, Constellations, and Grace Lutheran’s Praise Band.

Perc enjoyed various outdoor activities, such as canoeing, hunting, and fishing with family and close friends. He was especially fond of jazz and big band music and had fun attending numerous other symphony, Nordic folk, barbershop and chorale concerts with Lin. A lifelong avid reader, Perc particularly enjoyed his collection of Agatha Christie mysteries. He also enjoyed western movies, traveling, bird watching, his family pets (Dusty, Jubil, Pumpkin, Holly, Ginger, Amber and Tigger), biking, long walks, and dances at Electric Park. His holiday spirit played a major role in generations of cherished family Christmas memories. Most importantly, he enjoyed attending Skipp’s athletic events and performances as he grew up, as well as those of grandsons Trent and A.J., and spending time with family.

Perc was a longtime treasurer for the Son’s of Norway and the Waterloo Cemetery Board. He also researched, guided, and prepared the Viking portion of a Norwegian Exhibit, which was displayed in Waterloo’s Junior Art Gallery.

He is survived by his son Skipp (Sarah) Slattenow of Bondurant; two grandsons, Trent and A.J. Slattenow; his brother, Monte Slattenow of Live Oak, Florida; sister-in-law, Marlene (Roy) Stafford of Vernon, TX; and a number of nieces and nephews.

Perc is preceded in death by his wife, Lin; his sister, Sandra (Tony) Buns; and brother, Neal (Diane) Slattenow.

Funeral services will be 10:30 am Friday, December 4, 2026, at Grace Lutheran Evangelical Church, Waterloo.

Burial will be at Waterloo Cemetery, Waterloo.

Visitation will be from 4:00 to 7:00pm Thursday, December 3, 2026 at Locke at Tower Park, Waterloo

Memorials may be directed to Grace Evangelical Lutheran Church, Waterloo or Valley Lutheran School, Cedar Falls.

Locke at Tower Park is assisting with arrangements. Go to www.LockeFuneralService.com to leave condolences.