Zoom: correct, the P&W J57 powered versions of the B52 and KC135 had water injection.
Seeing John Farley's comments of filling up from the fire engine causes the thought that you had to check that what was going in, was indeed water! (Paninternational BAC111-515 Hamburg 06/09/71, Jet A1 instead of de-min. water, 21 fatalities.)