Let’s start by answering the question, ‘What is Greywater?’

Simply put, it is any water that is not potable. It isn’t white (which is fresh, potable water) nor black (which is sewage). Wastewater from baths, basins, showers and laundry are generally referred to as greywater.

grey water explanation

South Africa is considered a water-scarce country. It has become more prevalent for households to start utilising greywater and embrace sustainable water solutions.

How is greywater treated?

There are four steps in our treatment:

Pre Screening – An automatic, self-cleaning mechanical screen is used to eliminate lint, hair and other coarse materials. This prevents blockages and dirtying of the system.

Bio-Filtration – Collected water flows through our patented biofilter under gravity. This is responsible for removing impurities through a combination of physical removal, absorption and microbial-induced aerobic degradation.

Disinfection – Our powerful, ‘triple-barrier’ approach to disinfection meets strict regulatory standards. Decontamination of the water accumulated takes place via ultrafiltration, ozonation and chlorination.

Real-time water quality analysis – Constantly overseeing the quality of the treated water is critical to making sure that the system is running at the required standard.

Greywater is both treated and stored in polyethylene tanks which are UV treated and have a carbon black food safety lining on the inside to prevent algae from growing.

greywater harvesting

Once the water is treated, it can safely be used for both outdoor and indoor non-potable functions, supporting the growing demand for sustainable water use.

Ways to reuse Greywater

The average family of four will use between 300-400 litres of reusable water daily. If it’s not being recycled, that’s close to 300-400 litres of freshwater (and money) down the drain every day. 

This water is rich in residues, soaps and nutrients in diluted quantities that can be useful to the garden in providing sulphates and nitrates. Some say this water is even more useful to the garden than clean tap water.

The average suburban garden uses approximately 35% of the domestic water consumption. That could be a significant water saving benefit in using greywater for outdoor irrigation.

This means installing a greywater system is a sustainable and smart choice. Recycled greywater constitutes a “new” water supply, allowing previously wasted water to be used beneficially, reducing reliance on municipal resources, saving money, and helping the environment.

We provide sustainable greywater recycling systems and can assess your situation and advise how it would be best adapted. If you want to know more, contact us for a quote.

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