CAMBRIDGE - Otto Hintze, Jr., 81, of Cambridge, passed away unexpectedly on Sunday, November 16, 2014 at home. Mr. Hintze was born in Newark, N.J. on October 17, 1933, the oldest child of the late Otto, Sr. and Anna Hock Hintze. He was raised mostly in Irvington, N.J. and graduated from Irvington High School in 1951. He then embarked on a 36-year career with Culligan Water Conditioning, starting as a floor sweeper and rising through the ranks to become Vice President and General Manager of the Consumer Division, retiring in 1987. He also served in the U.S. Army from 1951-53. Mr. Hintze married Janet Metzler Hintze in 1958. They lived in Tinton Falls, N.J. for ten years before moving to Freehold, N.J. in 1970 and then to Cambridge in 2000, where they enjoyed living close to Chesapeake Bay. He had many interests, including community volunteer work, landscaping, gardening, politics and watching professional sports. In addition to his wife of 56 years, he is survived by a son, Glenn Hintze, and his wife, Susan, of Somers, N.Y.; a brother, Robert Hintze, of Apollo Beach, Fla.; a sister, Carol Hintze Pilone, of Flanders, N.J.; two granddaughters, Gretchen Hintze and Claire Hintze, both of Somers, N.Y.; and many in-laws, nieces, a nephew and many friends. Calling hours were at Higgins Memorial Home, Freehold, N.J., on November 20, 2014 from 2 p.m. to 4 p.m. and 7 p.m. to 9pm. Funeral service is today at 11 a.m., November 21, 2014 at the funeral home. Interment at Old Tennent Cemetery, Manalapan, N.J. Donations are being accepted in his memory at the American Heart Association, Memorial and Tribute Processing Center, 4217 Park Place Court, Glen Allen, VA 23060-9979. Local arrangements entrusted to Newcomb and Collins Funeral Home, P.A., Cambridge. To send online condolences visit www.newcombcollins.com