On Sunday 5th October 2010, Rev. Joel Waweru Mwangi was consecrated and enthroned as the second bishop of Nairobi Diocese. Bishop Waweru succeeds Bishop Peter Njoka who retired from active ministry.
Archbishop Dr. Eliud Wabukala led through the steps of the service which was jubilant with songs of praise. ACK St. Stephens Jogoo Road the venue for the event, was packed to capacity. Bishops form various parts of the diocese attended to welcome the new bishop in the province of Kenya.
Bishop Waweru is married to Tabitha Muthoni and are blessed with two daughters, Loise and Leah.
He holds a Masters of Arts in leadership in addition to various leadership courses.