Water, Sanitation and Hygiene (WASH) is fundamentally associated with the health and well-being of humans, dignity, and contributes to creating resilient communities by living in healthy environments (1). Based on a One Health approach to WASH, there is interconnection between human, animal, and environmental health; an integrated approach to shared threats like pathogens and pollutants in water systems provides holistic solutions: better management of land, resilient infrastructure, and more efficient agricultural practices that avoid the spread of zoonotic diseases, antimicrobial resistance, and waterborne diseases and improve overall well-being beyond just human health (2).
Despite its importance, access to adequate WASH services is constrained in most low and middle-income countries. Good hygiene cannot be attained with restricted access to safe water and sanitation. In countries with low and middle incomes, 60% of deaths flow from diarrhoea, of which 35%, 31% and 12% are due to unsafe drinking water, open defecation or poor sanitation and poor hygiene, respectively. However, 9% of deaths resulting from diarrhoea are linked to inadequate hygiene in high-income countries (3).
The One Health perspective in WASH requires urgent attention to conduct further research and intervention in the human-animal interface to prevent and control the transmission of zoonotic diseases. The sanitation and hygiene program from the perspective of One Health is highly recommended for areas with a higher population in terms of human-animal density (4).
References:
- World. (2019, November 7). Water, sanitation and hygiene (WASH). Who.int; World Health Organization: WHO. //www.who.int/health-topics/water-sanitation-and-hygiene-wash#tab=tab_1
- FAO: One Health approach can advance public health through better water management. (2025, November 14). FAORegionalOffice-Europe-REU; FAO. //www.fao.org/europe/news/detail/fao--one-health-approach-can-advance-public-health-through-better-water-management/en#:~:text=The%20One%20Health%20approach%20is%20an%20integrated,investments%20in%20climate%2Dresilient%20and%20low%2Dpollution%20water%20systems
- Prüss-Ustün, A., Wolf, J., Bartram, J., Clasen, T., Cumming, O., Freeman, M. C., Gordon, B., Hunter, P. R., Medlicott, K., & Johnston, R. (2019). Burden of disease from inadequate water, sanitation and hygiene for selected adverse health outcomes: An updated analysis with a focus on low- and middle-income countries. International Journal of Hygiene and Environmental Health, 222(5), 765–777. //doi.org/10.1016/j.ijheh.2019.05.004
- Sandul Yasobnat, Ravina Tadvi, Patel, K., & Saxena, D. (2022). Water, sanitation and hygiene from One Health perspective. One Health Bulletin, 2(1), 10–10. //doi.org/10.4103/2773-0344.350691
The One Health approach highlights how water, sanitation and hygiene (WASH) link human health, animal health and the environment. Unsafe water and poor sanitation can contaminate soil and water bodies, allowing disease-causing organisms to spread between animals and humans. This increases the risk of diarrheal diseases and environmental degradation, especially in vulnerable communities.
Strengthening WASH systems—such as safe water supply, proper waste management, and hand hygiene—helps break disease transmission at the human–animal–environment interface. When WASH is planned using a One Health lens, it promotes coordination between health, veterinary, and environmental sectors, leading to healthier populations and more sustainable ecosystems.
References:
- World Health Organization (WHO). (2017). One Health. WHO.
- World Bank. (2018). One Health: Operational framework for strengthening human, animal, and environmental health systems. World Bank.
- UNICEF & World Health Organization. (2023). Progress on household drinking water, sanitation and hygiene. UNICEF/WHO Joint Monitoring Programme.
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Integrate animal waste management into national sanitation strategies.
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Monitor shared environments (water/soil) for pathogens and AMR markers.
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Collaborate across sectors (veterinary, medical, environmental, and engineering) to move from a human-centric "toilet" focus to a planetary-centric "waste management" focus.
(Dickin et al., 2025)