May God bless you and your...
My deepest condolences to the McClain Family for the loss of your loved one, William, "Bill", and pray God gives you comfort, peace and strength.
Jo H.
November 29, 2021


Upper Darby, Pennsylvania
Dec 12, 1941 – Nov 16, 2021 (Age 79)
William D. McClain “Bill”, 79, passed away on Nov. 16th in Phoenix Arizona, where he lived for 33 years. Born and raised in Philadelphia Pennsylvania, graduate of Haverford High School, went on to Pennsylvania Institute of Technology, followed by Villanova University. Leader of Global Excellence...
Read MoreMy deepest condolences to the McClain Family for the loss of your loved one, William, "Bill", and pray God gives you comfort, peace and strength.
Jo H.
November 29, 2021
In loving memory of a wonderful & unselfish person, I will miss you, Bill. Am glad to work together with you on a SG project & thanks for being very patience with me; a non engineer in the UPW industry.
Jo-SG
November 26, 2021 | Work
A real stalwart of the UPW industry. His accomplishments and impact to my world are immense. My thoughts and prayer for his near and dear. Bill will always be in our hearts, our thoughts and physically in the water treatment plants he designed for us that will continue to create the highest purity water in the world.
Rushikesh Matkar
November 22, 2021 | Work
You are dearly missed. You have always been a mentor to me in the UPW space.
Paul Tan
November 22, 2021
RIP Bill, it has been a pleasure working with you. I will always remember your guidances in Water treatment engineering.
Ben Poh (Suez) Singapore
November 21, 2021 | Work