Guernsey Water says increasing household bills by between £5 and £7 a month will help it offset higher maintenance and investment costs.
The States-owned utility says since 2018 its charges have increased by less than inflation.
But from 1 January 2024, metered customers will pay around 11% more, while unmetered customers see a 12% rise - this is double the current rate of inflation.
Guernsey Water says this is to cover the rising cost of its 'vast network', which it calls 'the island’s most critical infrastructure.'
This includes 14 reservoirs, extensive underground pipes, and a wastewater centre.
Anyone concerned about the charges is asked to contact the company.
Discarded glass blamed for Little Sark fire
Appointment of Guernsey's first female Bailiff
Sensitive demolition at Guernsey's largest building site to begin soon
Guernsey big screen for World Cup Semi-Final sold out
Hundreds protest against a goods and services tax for Guernsey
Donations page set up for Sark's volunteer firefighters
Firefighters tackle gorse fire at La Corbiere
50 people evacuated from scene of fire in Portbail-sur-Mer
