Just over a month ago, the council was forced to flush pipes in Aramoho and Durie Hill after residents complained of constant yellow-tinged water.
One Durie Hill homeowner said at the time the issue had been constant in their household.
"Our water has been coloured every day or two for the past month. Our home is only four years old so it's not our pipes."
Another Aramoho homeowner said although discolouration wasn't occurring daily, it was growing in frequency.
"It is happening often. A lot of people around here are noticing the same thing, but that said, some aren't. It's very odd."
The council asks anyone who is experiencing discoloured water to contact it directly.
"If you have discoloured water we recommend you flush your cold taps for 10 minutes. If the water has not cleared in this time, please call 06 349 0001 and ask for the infrastructure team."