"These projects are essential to ensure Aucklanders enjoy a safe and reliable water supply.
"Auckland's population is predicted to grow by one million people in the next 30 years so the city absolutely needs this investment."
Mr Monk said growth-related infrastructure is funded by a combination of service charges, infrastructure growth charges and borrowing.
Water prices will increase from $1.375 to $1.409 (including GST) per 1000 litres for all customers.
Watercare does not receive any funding from property rates paid to the Auckland Council, Mr Monk said.
"All the money we receive from customers goes into operating, maintaining and expanding our infrastructure. We do not receive any additional funding from Auckland Council or the government."