https://www.waikatodistrict.govt.nz/news/media-releases/article/2020/01/14/sprinkler-restrictions-increased-as-hamilton-moves-to-water-alert-level-2

Water Alert Level 2

If you are connected to the Hamilton water supply you can use sprinkler systems on alternate days between 6 a.m. and 8 a.m. and 6 p.m. and 8 p.m.

Hand held hosing can be used anytime.