Tynwald has approved the new so-called ‘toilet tax’.
It will be come into force in April regardless of widespread resistance - over 6,300 people have signed a petition opposing its introduction.
The Water and Sewerage Authority will now charge households £50 this year - with this rising to £100 next year.
It's in an effort to cover a £2 million gap in the authority's finances.
Treasury Minister Eddie Teare says there’s another reason why people are being asked to pay:
GP waiting times to be raised in House of Keys tomorrow
Waves higher than predicted on crossing which damaged cars
Spitfire flights to be launched from Ronaldsway
Does Crogga owe the government money?
Thinking of standing for election?
Doctors' salaries under scrutiny from MHK
Rings stolen at Christmas market reported to police
Plans submitted for advertising board outside the airport