Hibisicus Coast residents are being warned not to do their laundry this weekend, Stuff reports, while Watercare flushes out the sludge from its system. Watercare has commissioned a $12.8 million pump station that will push water from water treatment plants through the Whangaparāoa Peninsula faster. “This may stir up sediment in the pipes and discolour the water temporarily,” Northern operations manager Tim Scheirlinck said. If residents find that their water remains discoloured, Watercare has asked that they email hibiscuscoast@water.co.nz