From the point of view of a resident it is worth considering as it enhances the water security of the resident. A builder’s priority is TOTALLY DIFFERENT, since the space TAKEN up by the treatment system can not be ‘sold’ to a buyer, he will just not consider it, instead the builder will combine grey water with sewage in an STP. This enables the builder to save costs.

However if looked at from the residents’ view point, a separate grey water treatment system being easier to operate provides a facility to ‘FALL back on’ when the STP FAILS.

From the point of view of a resident it is worth considering as it enhances the water security of the resident. A builder’s priority is totally different, since the space taken up by the treatment system can not be ‘sold’ to a buyer, he will just not consider it, instead the builder will combine grey water with sewage in an STP. This enables the builder to save costs.

However if looked at from the residents’ view point, a separate grey water treatment system being easier to operate provides a facility to ‘fall back on’ when the STP fails.