Dannevirke residents are being warned to disinfect their water or use the tanker supply being provided by the Tararua District Council as the water crisis deepens.
Tanker water is available on King St, outside the Dannevirke High School, from 8am to 9pm today.
The reticulation network is currently re-pressurising by drawing water directly from the Tamaki River to supplement slow water flows from the impounded water supply and the number two reservoir on Adelaide Rd.
"Both reservoirs have sufficient water, however we believe there is an air-lock or small valve fault which is preventing the passage of water on Cole St, which is also affecting the following street, Fraser-Collins, Guy, King, Ranfurly, Ruahine and Wright streets," Dave Watson, the council's utilities manager, said.
Meanwhile, the MidCentral Public Health Service is working with the council and has recommended that, until notified, residents are advised to disinfect water or use tankered water for drinking, making ice, food preparation, brushing teeth and preparing toddler formula.