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Evidence-Based Resource Summary

Strength of Evidence: 
4 out of 4
4 out of 4
Year Published: 

Interventions to Improve Water Quality for Preventing Diarrhea

Description of Resource: 
Diarrhea is a major cause of death and disease, especially among young children in low-income countries. The most common causes of diarrhea in these countries are contaminated water and food, and poor hygiene practices. This Cochrane Review summarized 55 studies evaluating different interventions to improve water quality and prevent diarrhea. Most of these studies were conducted in low- or middle-income countries (LMICs) (50 studies), with unimproved water sources (30 studies), and unimproved or unclear sanitation (34 studies). This review assessed both source-based improvements and point-of-use interventions, such as disinfection and filtration systems for use in the home. Evidence indicates that the various interventions for improving water quality are more effective when people use them consistently, so research into practical approaches to help assure long-term use will improve outcomes.

Evidence-Based Resource Details

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Developed By: 
Cochrane Library
Developer Type: 
Non-Federal Government
Healthy People 2020 Topic Area(s): 
Environmental Health
Healthy People 2020 Objectives: 
Resource Type: 
Systematic Review
Clasen TF, Alexander KT, Sinclair D, Boisson S, Peletz R, Chang HH, Majorin F, Cairncross S. Interventions to improve water quality for preventing diarrhoea. Cochrane Database Syst Rev [Internet]. 2015 [cited 2017 Oct 25];(1). doi: 10.1002/14651858.CD004794.pub3. Available from: