Short answer
When designing water solutions, consider not just how much water is available, but also how clean it is, and explore technologies that can improve both aspects sustainably.
- Field
- Resource Management
- Source
- Environmental Research Letters (2021)
- Method
- Integrated modelling and scenario analysis
- Evidence
- Strong effect
Global water scarcity is significantly underestimated when only considering water quantity, as degraded water quality exacerbates the problem and requires a broader approach to clean water technologies. This resource management research insight is drawn from a 2021 study published in Environmental Research Letters. Using Integrated modelling and scenario analysis, researchers explored how this design variable affects real-world outcomes. The key design takeaway: When designing water solutions, consider not just how much water is available, but also how clean it is, and explore technologies that can improve both aspects sustainably.
Water Scarcity is a Dual Threat: Quantity and Quality Demands Integrated Solutions
Global water scarcity is significantly underestimated when only considering water quantity, as degraded water quality exacerbates the problem and requires a broader approach to clean water technologies.
Environmental Research Letters · 2021
Key Findings
- 01Including water quality increases the percentage of the global population experiencing severe water scarcity from 30% to 40%.
- 02Water quality impacts are particularly severe in regions like eastern China and India, where pollution from withdrawals degrades water sources.
- 03Expanding desalination and treated wastewater reuse can significantly reduce water scarcity, but their side effects (brine, energy, cost) require careful consideration.
Application
Design takeaway
When designing water solutions, consider not just how much water is available, but also how clean it is, and explore technologies that can improve both aspects sustainably.
How to apply
When designing a water purification system, evaluate its effectiveness not only in terms of volume treated but also in removing specific pollutants relevant to the local water source.
Project actions
- 01When researching a water-related design problem, look for data on both water availability and water quality in your chosen region.
- 02Consider how your design solution might impact water quality, even if it's primarily focused on increasing supply.
Method & Evidence
Variables
Strengths & Limitations
Strengths
- +Integrates both water quantity and quality for a more comprehensive view of scarcity.
- +Quantifies the potential impact of specific clean water technologies.
Limitations
The study's modelling might not capture all local variations in water quality or the specific economic feasibility of technologies in every context.
Reliability & validity
The study's reliance on global models and projections may introduce uncertainties. The validity of findings depends on the accuracy of input data and the assumptions made in the modelling scenarios.
Think critically
How might the 'side effects' of desalination and treated wastewater reuse, such as brine disposal and energy consumption, create new resource management challenges that designers need to address?
Design Principles
"Holistic water resource design requires the integration of quantity and quality management strategies."
Designers and engineers must recognize that water scarcity is not solely a supply issue. Solutions need to address both the availability and the potability of water resources, integrating quality considerations into the design of water management systems and technologies.
What This Means for Your Design
Water scarcity isn't just about not having enough water; it's also about the water we have being too polluted to use. New technologies can help, but we need to be smart about how we use them.
How to use in your project
- 1.Reference this study to justify the importance of considering water quality in your design project, especially if it relates to water access or management.
Add to My Project
Quick Cite
Paragraph starter
This research highlights that global water scarcity is a complex issue driven by both insufficient water quantity and degraded water quality. The study found that incorporating water quality parameters significantly increases the estimated proportion of the global population facing severe water scarcity, underscoring the need for design solutions that address both aspects holistically.
Source
Environmental Research Letters
Global water scarcity including surface water quality and expansions of clean water technologies
journal · 2021
View sourceQuestions About This Research
- What does the research say about water scarcity is a dual threat: quantity and quality demands integrated solutions?
- When designing water solutions, consider not just how much water is available, but also how clean it is, and explore technologies that can improve both aspects sustainably. Evidence: Environmental Research Letters (2021).
- Why does "Water Scarcity is a Dual Threat: Quantity and Quality Demands Integrated Solutions" matter for design?
- Designers and engineers must recognize that water scarcity is not solely a supply issue. Solutions need to address both the availability and the potability of water resources, integrating quality considerations into the design of water management systems and technologies.
- How can designers apply this research?
- When designing water solutions, consider not just how much water is available, but also how clean it is, and explore technologies that can improve both aspects sustainably.
- What were the main findings?
- Including water quality increases the percentage of the global population experiencing severe water scarcity from 30% to 40%.. Water quality impacts are particularly severe in regions like eastern China and India, where pollution from withdrawals degrades water sources.. Expanding desalination and treated wastewater reuse can significantly reduce water scarcity, but their side effects (brine, energy, cost) require careful consideration.
- What research method was used?
- Integrated modelling and scenario analysis.
- How strong is the evidence?
- Evidence strength is rated Strong effect, based on a 2021 journal from Environmental Research Letters.
- What should I do differently in my next project?
- When designing a water purification system, evaluate its effectiveness not only in terms of volume treated but also in removing specific pollutants relevant to the local water source.
- What are the limitations?
- The study's projections for technology expansion do not fully account for all technical and economic constraints.