The two-car crash killed both drivers, Kirsty Michelle Parsons, 26, of Hastings, and Wiremu John Armitage, 31, also of Hastings, late on May 10.
Last Sunday, five people narrowly avoided significant injuries after their car rolled into a drain on Taihape Rd.
Witnesses at the scene said two were trapped in the vehicle, which was lying on its roof in the water, for several minutes after the crash on Sunday, about 11.30am.