Water Management Act 2000 No 92
Current version for 1 July 2020 to date (accessed 5 August 2020 at 09:46)
358   Joint owners
(1)  If land is owned or held jointly by two or more persons, such persons are jointly and severally liable to the charging authority for the rate, but as between themselves each are only be liable for such part of the rate as is proportionate to his or her interest in the land.
(2)  If any of such persons pays to the charging authority more than his or her proportionate part, he or she may recover the excess by way of contribution from the others.