Ageing Tawa water main bursts, followed by one in Crofton Downs.
Tar seal on a suburban Wellington road bubbled before a geyser shot more than 10 metres into the air.
Margaret Ellis, of Thatcher Cres, Crofton Downs, lives beside the scene of the water main that ruptured spectacularly on Sunday afternoon.
"They were laying the road and all of a sudden we saw a bubble of water, then a bigger one, then a bigger one."
The final one was a tower of water more than 10m high that showered her roof and flooded the nearby roundabout intersection of Silverstream Rd and Churchill Dr.
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"There was huge pressure under there," she said.
A Wellington City Council spokesman said about 200 homes were without water till about 5pm on Sunday - earlier than expected.
"The burst was a hole in the 150mm main, which meant that they were able to put a band around it, rather than have to excavate and cut and replace a longer section of pipe."
The road started to rise from pressure before the water burst through.
The geyser was caused by a main that likely burst due to heavy machinery working above to re-seal the road, he said.
"[Workers] were here before the thing went because the road was starting to sort of rise up."
Tony Townsend, who lives nearby, described the geyser as "a huge tower of water".
Edwin Mitson could see the geyser from his Wadestown home.
"You could see it very, very, very clearly by the naked eye. It was pretty huge."
Earlier in the day, a burst main saw hundreds of Tawa homes without water after a cement pipe laid in the 1950s burst.
Wellington City Council spokesman Richard MacLean said a main burst in Carleton Tce in the north Wellington suburb early on Sunday.
Water was restored in Tawa by about 1pm.
Tawa is notorious for water pipes bursting.
Wellington City Council spokesman Richard MacLean said there were a lot of cement pipes in the area dating from the 1950s and they were particularly susceptible to bursting.
The council was in the process of replacing the ageing pipes.
Wellington Water would investigate both incidents, which did not appear to be related.