Hope for change in water models

WATER models may be the key to reducing areas in the country receiving intermittent supply of water.

WAF said two areas that recorded success when water models were introduced were Waiyavi Stage Five and Vatamai Village in Lautoka.

“By running a water model using the hydraulic water network model and comparing the results with the physical behaviour of the water system, WAF’s acting manager for bulk supply Seru Soderberg and graduate engineer Navneel Prasad were able to pinpoint physical discrepancies affecting the water supply to two areas,” WAF said.

According to Mr Soderberg, the water model at Waiyavi showed the pressure should be at 30 to 40 metres but in reality, the pressure was at about 10 metres, dipping to minus five metres at peak hours.

“Some people reported receiving water for only two hours in the morning and two at night for more than 30 years,” he said.

“The main factor contributing to the low or no pressure was sluice valves that had been opened to incorrect levels. We were able to correct discrepancies like these and improve data collection regarding the water mains and valves that make up the system.”