The truth behind our Green Oasis

Century City uses only treated effluent for irrigation

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Date 19 February 2018
Author Tatum Sieni
Contact Email info@centurycity.co.za
Contact Telephone +27 21 552 6889

As a result, the Century City Property Owners’ Association and some of the other Century City stakeholders have come under fire from some quarters for their irrigation regime. However, we can assure you that not a single drop of potable water or even borehole water is being used to keep our city green.

Century City is in the enviable position of having access to treated effluent that is piped from the Potsdam Waste Water Works for not only the irrigation of common areas at Century City but also for each of the different residential and commercial complexes in the precinct.

In fact, Century City deserves to be commended in that not only is treated effluent being used for irrigation instead of potable water but it is doing the Council and environment a huge favour as this effluent is surplus to the Council’s needs and would otherwise simply overflow into the Diep River and then into the sea.

Having said that and even though there are no restrictions on using treated effluent for irrigation, due to the current sensitivities around irrigation, the CCPOA has cut back on its irrigation schedule.  It is currently only doing so between 6pm and 9am three times a week. However, maintenance of the sprinklers has to be done during work hours but this is kept to a minimum.

Treated effluent is also being used to flush toilets in the 17 Green Star rated commercial buildings at Century City as well as to run their cooling systems.

The treated effluent supply agreement between the CCPOA and the City of Cape Town, was recently renewed providing Century City rights to additional capacity and the CCPOA has been urging all commercial stakeholders to consider retrofitting their buildings with dual plumbing. A number, including Canal Walk Shopping Centre, are in the process of doing so.

Residents are the greatest users of water and Rabie, as responsible developers are now installing dual plumbing systems in all new commercial and residential developments going forward so that in future only treated effluent will be used for flushing.

Axis dual plumbing will save 2million litres per year

The first residential developments to benefit from this is our very own Palme Vue block and the Axis residential development under construction on the corner of Sable and Ratanga Roads. In both instances, the developer is absorbing the extra, substantial costs of doing so as price lists had been fixed and apartments had already been sold when they made the decision.

The developer estimates that the dual flushing in Axis alone will save more than two million litres of drinking water per year!

Rabie is also exploring the possibility of taking some of its investment properties, including hotels and the conference centre, completely off the grid.

In addition, Rabie has been and will continue to implement other stringent potable water saving measures to try and stave off Day Zero including ensuring all their on-site construction activities use only non-potable water. The only potable water used on site is for welfare purposes such as drinking and the washing of hands.

In terms of ready-mix materials such as concrete which is brought to site, some of their suppliers are already operating with only non-potable water and the others will be forced to follow suit to stay in business.