Beddows said the tanker was called when the nearest fire hydrant failed, and efforts to find one in Lake Rd were hampered by vegetation.
"We did have our water problems," he said, "but it didn't make any difference to the outcome. There was nothing we could have done to save it."
A fire investigation officer was at the scene.
Late on Sunday morning the brigade responded to a vegetation fire under pine trees near Waiharara. Had the wind turned the flames could have spread into scrub, Beddows said, but it turned out to be "fairly minor".
It was not clear how the fire started, but he believed it had been lit deliberately.