Why pathogens matter for meeting the united nations’ sustainable development goal 6 on safely managed water and sanitation

Alexis L. Mraz, Innocent K. Tumwebaze, Shane R. McLoughlin, Megan E. McCarthy, Matthew E. Verbyla, Nynke Hofstra, Joan B. Rose, Heather M. Murphy*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Water and wastewater utilities, water and sanitation hygiene (WASH) practitioners, and regulating bodies, particularly in developing nations, rely heavily on indicator microorganisms, as opposed to pathogens, for much of their regulatory decisions. This commentary illustrates the importance of considering pathogens and not relying only on indicator organisms when making decisions regarding water and sanitation, especially with respect to meeting the current targets of the Sustainable Development Goal (SDG) 6. We use quantitative microbial risk assessment (QMRA) to present three common scenarios that WASH and public health practitioners encounter to illustrate our point. These include 1) chlorination of surface water for drinking, 2) land application of latrine waste as a fertilizer, and 3) recreation/domestic use of surface waters impacted by wastewater discharge. We show that the calculated probabilities of risk of infection are statistically significantly higher when using treatment/survival information for pathogens versus using indicator species data. Thus, demonstrating that relying solely on indicators for sanitation decision making is inadequate if we truly want to achieve the SDG6 targets of safely managed water and sanitation services.

Original languageEnglish
Article number116591
JournalWater Research
Volume189
DOIs
Publication statusPublished - 1 Feb 2021

Fingerprint Dive into the research topics of 'Why pathogens matter for meeting the united nations’ sustainable development goal 6 on safely managed water and sanitation'. Together they form a unique fingerprint.

Cite this