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Defining freshwater as a natural resource: a framework linking water use to the area of protection natural resources

  • Charlotte PradinaudEmail author
  • Stephen Northey
  • Ben Amor
  • Jane Bare
  • Lorenzo Benini
  • Markus Berger
  • Anne-Marie Boulay
  • Guillaume Junqua
  • Michael J. Lathuillière
  • Manuele Margni
  • Masaharu Motoshita
  • Briana Niblick
  • Sandra Payen
  • Stephan Pfister
  • Paula Quinteiro
  • Thomas Sonderegger
  • Ralph K. Rosenbaum
WATER USE IN LCA

Abstract

Purpose

While many examples have shown unsustainable use of freshwater resources, existing LCIA methods for water use do not comprehensively address impacts to natural resources for future generations. This framework aims to (1) define freshwater resource as an item to protect within the Area of Protection (AoP) natural resources, (2) identify relevant impact pathways affecting freshwater resources, and (3) outline methodological choices for impact characterization model development.

Methods

Considering the current scope of the AoP natural resources, the complex nature of freshwater resources and its important dimensions to safeguard safe future supply, a definition of freshwater resource is proposed, including water quality aspects. In order to clearly define what is to be protected, the freshwater resource is put in perspective through the lens of the three main safeguard subjects defined by Dewulf et al. (2015). In addition, an extensive literature review identifies a wide range of possible impact pathways to freshwater resources, establishing the link between different inventory elementary flows (water consumption, emissions, and land use) and their potential to cause long-term freshwater depletion or degradation.

Results and discussion

Freshwater as a resource has a particular status in LCA resource assessment. First, it exists in the form of three types of resources: flow, fund, or stock. Then, in addition to being a resource for human economic activities (e.g., hydropower), it is above all a non-substitutable support for life that can be affected by both consumption (source function) and pollution (sink function). Therefore, both types of elementary flows (water consumption and emissions) should be linked to a damage indicator for freshwater as a resource. Land use is also identified as a potential stressor to freshwater resources by altering runoff, infiltration, and erosion processes as well as evapotranspiration. It is suggested to use the concept of recovery period to operationalize this framework: when the recovery period lasts longer than a given period of time, impacts are considered to be irreversible and fall into the concern of freshwater resources protection (i.e., affecting future generations), while short-term impacts effect the AoP ecosystem quality and human health directly. It is shown that it is relevant to include this concept in the impact assessment stage in order to discriminate the long-term from the short-term impacts, as some dynamic fate models already do.

Conclusions

This framework provides a solid basis for the consistent development of future LCIA methods for freshwater resources, thereby capturing the potential long-term impacts that could warn decision makers about potential safe water supply issues in the future.

Keywords

Freshwater resources Life cycle impact assessment Long-term depletion Long-term pollution Water use 

Notes

Acknowledgements

The valuable feedback provided by Andrew Henderson and Cristina Madrid López during the article’s preparation is gratefully appreciated.

Funding information

This study was conducted through the International Working Group for Water Use in Life Cycle Assessment (WULCA), which receives contributions from the UN Environment Life Cycle Initiative. Financial support of the Industrial Chair for Environmental and Social Sustainability Assessment “ELSA-PACT” (grant no. 13-CHIN-0005-01) was also received from ANR, the Occitanie Region, ONEMA, its industrial partners (BRL, SCP, SUEZ Groupe, VINADEIS, Compagnie Fruitière), and IMT Mines Ales.

Compliance with ethical standards

Disclaimer

The views expressed in this article are those of the authors and do not necessarily represent the views or policies of the organizations to which they belong. The designations employed and the presentation of the material in this publication do not imply the expression of any opinion whatsoever on the part of the UN Environment Life Cycle Initiative concerning the legal status of any country, territory, city or area or of its authorities, or concerning delimitation of its frontiers or boundaries. Moreover, the views expressed do not necessarily represent the decision or the state policy of the UN Environment Life Cycle Initiative, nor does citing of trade names or commercial processes constitute endorsement.

Supplementary material

11367_2018_1543_MOESM1_ESM.docx (102 kb)
ESM 1 (DOCX 101 kb)

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2019

Authors and Affiliations

  • Charlotte Pradinaud
    • 1
    • 2
    Email author
  • Stephen Northey
    • 3
  • Ben Amor
    • 4
  • Jane Bare
    • 5
  • Lorenzo Benini
    • 6
  • Markus Berger
    • 7
  • Anne-Marie Boulay
    • 4
    • 8
  • Guillaume Junqua
    • 2
  • Michael J. Lathuillière
    • 9
    • 10
  • Manuele Margni
    • 8
  • Masaharu Motoshita
    • 11
  • Briana Niblick
    • 5
  • Sandra Payen
    • 12
  • Stephan Pfister
    • 13
  • Paula Quinteiro
    • 14
  • Thomas Sonderegger
    • 13
  • Ralph K. Rosenbaum
    • 1
  1. 1.ITAP, Irstea, Montpellier SupAgro, ELSA-PACT Industrial ChairUniv MontpellierMontpellierFrance
  2. 2.LGEI, IMT Mines AlesUniv MontpellierAlesFrance
  3. 3.Department of Civil EngineeringMonash UniversityClaytonAustralia
  4. 4.LIRIDESherbrooke UniversitySherbrookeCanada
  5. 5.National Risk Management Research LaboratoryU.S. Environmental Protection AgencyCincinnatiUSA
  6. 6.European Environment AgencyCopenhagenDenmark
  7. 7.Chair of Sustainable EngineeringTechnische Universität BerlinBerlinGermany
  8. 8.CIRAIGPolytechnique MontrealMontrealCanada
  9. 9.Environment and SustainabilityInstitute for ResourcesVancouverCanada
  10. 10.Stockholm Environment InstituteStockholmSweden
  11. 11.National Institute of Advanced Industrial Science and TechnologyTsukubaJapan
  12. 12.AgResearch Ruakura Research CentreHamiltonNew Zealand
  13. 13.ETH ZurichZurichSwitzerland
  14. 14.Centre for Environmental and Marine StudiesUniversity of AveiroAveiroPortugal

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