For occupancy, a new building must be complete, including water fixtures, taps, etc. and WSD will not provide the water meter to a premises where unapproved fittings are installed.
So to get around this problem, Hong Kong Public Housing flats are provided with a very basic type of water tap, to gain the necessary government approvals. Then when the tenants take over the property, most new tenants immediately pay for replacing taps with more stylish models.
This wasteful practice is not limited to public housing projects. Some Interiors designers pick exotic water fixtures, including taps, showers, washbasins, and toilets that have not undergone the WSD approved the process, therefore temporary taps and basic white basins are installed until receipt of WSD approval.
Then after WSD approval, the new washbasins are ripped out, replaced with exotic basins and taps specified. Its no secret, the industry is well-aware, yet this incredibly wasteful practice persists.