Auckland Council - Building Wash

Sharron from Eden Terrace

when our damns are less than 50% full and Auckland Council asking people to continue to conserve water, why AC is intending to wash the building/window wash at 135 Albert street? - note the building was washed a year ago.
This is their response::::
Auckland House has not been externally washed for some time, I believe it has been more than a year since the last building wash happened. Some of the façade external components deteriorate due to the climate and location of the building, so we need to perform a building wash at least once a year to extend the life of the asset

On top of this, the building wash is used to investigate the quality of windows sealant and windows in general, so we can fix leaks and repair where necessary.
We have asked the contractor, Ventia, to ensure they are using the minimum possible amount of water during the building wash. We’ve agreed on few points, as follows:
A flow control valve will be used to decrease the pressure and the amount of water used.
Water is only going to be used once triggered by the technician.
A water meter to measure the quantity used for the building wash.

We believe these activities will reduce the water consumption to the minimum required.

Really building wash every year???? BCs take note this is not a necessary expense on owners - as the rain in Auckland will do the bulk of the job in keeping windows/walls clean .