THE Water Authority of Fiji has successfully completed the upgrading of the Waila treatment plant.
WAF's communications officer Navinesh Kumar said they were also installing valves in the water system.
He said 11 valves had been installed so far and some main trunks in nearby areas were also fixed.
"Along with the works at Waila treatment plant, WAF also installed 11 valves in the water system and repaired two leaking trunk mains on Vuci Rd and at Caubati, making use of the planned Waila shutdown."
Mr Kumar said the authority would shutdown supply to some areas while carrying out the installation.
"The valve installation works are mostly done at night and after peak demand periods," he said.
Electro-mechanical equipment will be installed in Suva and Nausori to replace generators to improving reliability.