- Project plans
- Project activities
- Legislation and standards
- Industry context
- Specialist wikis
Last edited 17 Mar 2021
The multiplier effect refers to the increase in the socio-economic benefits for society that arise from any investment - in this instance in water and sanitisation. Water is the critical enabler for all of the UN’s Sustainable Development Goals, which means that investment in a wide variety of water infrastructure globally has a disproportionately positive effect - often quoted as a 5-fold multiplier effect.
Although the concept of ‘integrated water resources management’ (IWRM) was developed more than 20 years ago it is only since 2015, with agreement on the 2030 Agenda for Sustainable Development, that all heads of state worldwide have agreed that their countries’ water management plans should be of the integrated type.
This is an extremely encouraging achievement for which all parties involved should be congratulated. This global acknowledgement reflects the increasing recognition of integrated water management, the role of water as the critical enabler of all other domains of development, and the potential five-fold multiplier effect.
So, now that we’re finally all ‘singing from the same hymn sheet’, what do we actually need to do? And given that we’re seriously off-track with some of the global targets for water and sanitation, how can we be far more effective in future?
We need to understand where we are right now so that we can all recognise the scale of the challenge, and the resulting opportunity. All stakeholders, including civil society and investors, could be really mobilised if they understood just how great the need and opportunity is. This message needs to be concise and compelling – it is simply not the case that ‘more report words and pages’ will result in more policy impact.
This is also the entry point for the SDG 6 Synthesis Report, which is the only report from the UN system that informs the High-Level Political Forum for Sustainable Development (HLPF) during its meeting in New York, in July 2018, about the state of affairs of the Water and Sanitation Goal (SDG 6) in an integrated fashion.
So is there really a five-fold multiplier effect from investment in water infrastructure across the globe? This is a far larger multiplier effect than usually claimed for infrastructure.
There are both positive and negative reasons for the scale of the challenge and the resulting opportunity. The positive reasons derive from the fact that water is essential for all human activities and for societal economic development. Evidence suggests that 3 out of 4 jobs are directly or indirectly dependent on water security.
Water is not only essential for agriculture (responsible for 70% of global freshwater withdrawals - more than 90 % in some agriculture-based economies), but also for energy and industry. 4% of all electricity produced is used by the water sector and total electricity consumption is increasing. Water is truly vital, and sometimes small investment can make a big difference.
The negative reasons for the five-fold multiplier effect derive from the way in which the lack or lesser quality of water infrastructure for poorer people (especially women and girls, rural areas compared to cities, migrants), exacerbates the difficulties those groups already face. A few examples will suffice:
- For 80% of households in the developing world, it is women and girls who collect water, which restricts their access to education and other economic opportunities.
- More than 80% of the countries reported insufficient finance to achieve their national water supply and sanitation targets.
- 4.5 billion people lack safely managed sanitation services, 2.3 billion lack even a basic sanitation service, and 892 million people still practice open defecation – figures that result in unacceptable societal impacts.
- Disease and death due to avoidable poor hygiene is estimated to affect more than 1,000 children under 5 - every day.
However, when these shockingly high levels of need are combined with the recognition of the essential nature of water for human activity, effective action on the delivery of even basic services really does produce the five-fold multiplier effect. We need to get everyone, including investors and civil society, on board with this vision.
Cynics may point out that they’ve heard all this before. So why might we be able to make a real difference now? There are two reasons:
Firstly, investor awareness of the different locations of global economic activity has shifted. When China starts investing systematically in infrastructure in sub-Saharan Africa, other investors start to wonder what opportunities they are missing.
Secondly, digital technologies provide potentially cheap ways to access, distribute and analyse local data about water infrastructure performance. However, these technologies will only be transformative if people actually using water can access and trust that data and the ways it is used. The widespread distribution of mobile phones throughout many developing economies starts to make this a real possibility.
Taken together, these factors could mean that we are now able to start solving the critical overlapping problems of water governance, the need for multi-stakeholder partnerships and the need for cheap, accessible and local data and analysis about the performance of water infrastructure – even or especially in transboundary river catchments.
I’m really looking forward to the response to the launch of the report in New York in July. Will investors, innovators and civil society step up to the opportunity?
Professor Uhlenbrook gave the 2018 Gerald Lacey lecture on 21 May 2018.
 Related articles on Designing Buildings Wiki
- 2019 Price review draft determinations for water companies.
- Articles by ICE on Designing Buildings Wiki.
- Do our water quality standards demonstrate to the public that their water supply is clean?
- Environmental performance of the water and sewerage companies.
- The State of the Environment: Water Resources.
- Trading systems for water resources.
- Water conservation.
- Water efficiency – The next big sustainability issue?
- Water engineering.
- Water industry pressures.
- Why innovation is needed in the water sector.
Featured articles and news
LETI publishes guidance for energy efficient home retrofits.
Predictions about adequate post-pandemic IAQ in non-domestic buildings.
Government publishes plans to 'build back greener'.
The contentious nature of claims associated with cladding, fire safety and EWS1 forms.
ECA comments on low-carbon heating systems initiative and Heat and Buildings Strategy.
Cinders and other forms of domestic rubbish created filth but also generated great wealth.
CIC 2050 Group requests input to find out priorities for future industry leaders.
IHBC publishes response to consultation.
Institute applauds funding initiatives but presses for additional retrofit and tax measures.