OPINION | Our water demands by 2030 will outstrip availability... if we don't change our behaviour

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We need to change our behaviour around water usage, writes the author (James de Villiers, News24).
We need to change our behaviour around water usage, writes the author (James de Villiers, News24).

We are living in an environment of growing challenges to water scarcity, with demand outstripping supply in many areas, high user expectations and assurances, alleviated by climate variability which requires interventions, writes Jay Bhagwan.

The SARS-CoV-2 pandemic has resulted in many fault lines emerging in our societies. 

One of the key ones is that of behaviour change, where we have seen the emergence of two waves of increase in infections and mortality on the back of poor behaviour. 

The correction factor is stringent lockdowns, which once relaxed result in the cycle continuing. This is not the solution towards eliminating this virus. Behaviour change needs to be permanent until it is safe. The same applies to water. 

When water is plentiful and flowing, water use behaviour is poor. During restrictions, behaviours change, but revert back to normal immediately when the system improves. 

For a water stressed country like South Africa, our use is way beyond international norms of 170l/cap/day, where our consumption averages between 235 l/ca day to in places up to 500l/cap/day.

South Africa is a water stressed country, receiving on average less than 800mm rainfall per annum (a water-healthy country is deemed to have above 1 200mm per annum), which is further compounded by inequitable distribution of rainfall and evaporation. 

Most of our water falls on the eastern coastline and the highest evaporation is in the north-western regions where the evaporation can be higher than the amount of rainfall. 

Oblivious to reality

South Africa has exploited more than 90% of all its surface runoff to meet the demands of society, economy and food security. The predictions are that, by 2030, our demand for water will outstrip what is available, if we continue on the same pathway. 

As users we remain oblivious to this reality and the years of segregation have created expectations that water is plentiful, and this expectation has been carried into the new democracy.

However, today we are living in an environment of the growing challenges of water scarcity, with demand outstripping supply in many areas, high user expectations and assurances, alleviated by climate variability which requires interventions. 

Ensuring our long-term water supply will require the use of both drastic supply-sided approaches, such as water augmentation through water harvesting, reuse and recycling, as well as demand-sided approaches such as water conservation as seen in the Cape Town drought. 

In an environment of high expectations and promises, the conservation and wise use of our water resources will therefore become increasingly imperative and should evolve into a national culture. If not, then we will suffer the same Covid syndrome. We require significant shifts in a permanent behavior change on how we use and value water.   

READ | Relief for residents as water supply is restored after three months

Behaviour change typically focuses on changing long-term behaviours, applies behavioural theory, and requires rigorous measurement of outcomes and impact. 

Much like commercial marketing, behaviour change is about motivating the users, removing barriers to taking action and understand the emotional triggers that prompt change. The key difference between traditional product marketing and social marketing (the approach most frequently used in behavior change campaigns) is the aim to benefit society.

Internationally it has been shown that behavioural interventions are more effective when implemented by local governments in developing countries, where there are technology and resource constraints. 

Tackling simple issues such as social norms is key for inducing change through raising awareness about how much water an individual consumes, and comparing this consumption level with peers, can go a long way in helping change individuals’ behaviour regarding the use of a finite resource such as water and contributes to positive attitudes toward water conservation.

However, it is known that attitudes do not necessarily translate into actual behaviour. 

Over the past decade, utilities, governments, businesses, and non-profits have come to realise that more than just financial considerations and information drive behaviour.

Social and psychological factors also play a significant role in shaping consumers’ decisions and behaviours around resource use. 

Stakeholders have consequently turned their interest to behavioural science, a multidisciplinary field that draws from psychology, sociology, public health, and behavioural economics to explain the complex mechanisms that shape human behaviour. When used strategically, behavioural science holds the potential to drive down resource use, drive up profits, and generate measurable gains in conservation and efficiency.

Behaviour change

Thus, behaviour change offers and provides one of the key opportunities and sustainable interventions which can contribute to the acknowledgement and management of the water resources, the exploitation and its efficient use by households, agriculture, mining, industry, and the environment. 

As South Africa, learning from the pandemic we must make behaviour change in water use as a national priority, as well as a strategic intervention of equal importance in the National Water Master Plan.  This will help forge a new generation to adapt and be more resilient to the challenges of future water scarcity.

This should be the message of water week and the next few decades for all South Africans. 

The Water Research Commission, which turns 50 years this year, has been contributing to this behaviour through its valuable research and knowledge platform. 

A jewel to the nation must be further forged to serve South Africa into the future.

- Jay Bhagwan is an Executive Manager at the Water Research Commission. 

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