Barriers and Facilitators to Chlorine Tablet Distribution and Use in Emergencies: A Qualitative Assessment

Publication year
2019
Emergency type
Country

Chlorine tablets are commonly distributed for household water treatment in emergencies. However, confirmed use after distribution ranges widely (from 7–87%), which raises concerns about chlorine tablet effectiveness, as measured by acceptance and appropriate use. To investigate chlorine tablet effectiveness, we conducted nine key informant interviews (KIIs) on tablet distribution in emergencies in general, five KIIs on chlorine taste and odor acceptance and rejection specifically, and a literature review on chlorine taste and odor concerns.

Acceptability, effectiveness, and fouling of PointOne membrane filters distributed in South Sudan

Publication year
2019
Emergency type
Country

The Sawyer PointOne household hollow fiber membrane filter (PointOne) efficaciously removes microbiological indicators in the laboratory, and is increasingly considered for emergency response. To our knowledge, PointOne effectiveness in emergencies had not been evaluated. In South Sudan, 773 PointOnes were distributed.

Water, sanitation, and hygiene access in southern Syria: analysis of survey data and recommendations for response

Publication year
2018
Country

Background. Water, sanitation, and hygiene (WASH) are immediate priorities for human survival and dignity in emergencies. In 2010, > 90% of Syrians had access to improved drinking water. In 2011, armed conflict began and currently 12 million people need WASH services. We analyzed data collected in southern Syria to identify effective WASH response activities for this context.

Effectiveness of Multilevel Risk Management Emergency Response Activities To Ensure Free Chlorine Residual in Household Drinking Water in Southern Syria

Publication year
2018
Country

To provide safe drinking water and reduce the risk of disease, emergency responders in southern Syria are implementing a multilevel risk reduction strategy with the aim of ensuring free chlorine residual (FCR) in household drinking water. Responders implemented activities across the water chain (from chlorination station and well operators to water vendors to household members), including distribution of supplies for chlorination and training on chlorine use; activities varied by responder.

Water, sanitation, and hygiene interventions in outbreak response: a synthesis of evidence

Publication year
2018
Country

Water, sanitation, and hygiene (WASH) interventions are key to reducing the burden of disease associated with outbreaks, and are commonly implemented in emergency response. However, there is a lack of summarized evidence on the efficacy and effectiveness of these interventions. We conducted a systematic review of published and grey literature by developing theory of change models, developing inclusion criteria, conducting the search, selecting evaluations for inclusion, assessing the quality of the evidence, and analysing the included evaluations.

Chlorination of drinking water in emergencies: a review of knowledge to develop recommendations for implementation and research needed

Publication year
2017
Emergency type
Country

Clean water provision is a critical component of emergency response, and chlorination is widely used in emergencies to treat water. To provide responders with practical, evidencebased recommendations for implementing chlorination programmes and recommend areas for future research, we conducted a literature review of chlorination in emergencies, supplemented with a literature review on chlorination in general.

Setting priorities for humanitarian water, sanitation and hygiene research: a meeting report

Publication year
2018
Emergency type
Country

Recent systematic reviews have highlighted a paucity of rigorous evidence to guide water, sanitation and hygiene (WASH) interventions in humanitarian crises. In June 2017, the Research for Health in Humanitarian Crises (R2HC) programme of Elrha, convened a meeting of representatives from international response agencies, research institutions and donor organisations active in the field of humanitarian WASH to identify research priorities, discuss challenges conducting research and to establish next steps.

Sodium Hypochlorite Dosage for Household and Emergency Water Treatment: Updated Recommendations

Publication year
2018
Emergency type
Country

Household  water  treatment  with  chlorine  can  improve  the  microbiological  quality  of  household  water and  reduce  diarrheal  disease.  We  conducted  laboratory  and field  studies  to  inform  chlorine  dosage recommendations.  In  the  laboratory,  reactors  of  varying  turbidity  (10–300  NTU)  and  total  organic carbon  (0–25  mg/L  addition)  were  created,  spiked  with Escherichia  coli,  and  dosed  with  3.75  mg/Ls odium  hypochlorite.  All  reactors  had>4  log  reduction  of E.  coli 24  hours  after  chlorine  addition

Sodium Hypochlorite Dosage for Household and Emergency Water Treatment

Publication year
2008
Emergency type

Point-of-use  (POU)  water  treatment  with  sodium  hypochlorite  (NaOCl)  has been  proven  to  reduce  diarrheal  disease  in  developing  countries.  However, program  implementation  is  complicated  by  unclear  free  chlorine  residual guidelines  for  POU  water  treatment  and  difficulties  in  determining  appropriate dosage  recommendations.  The  author  presents  evidence  supporting  proposed criteria  for  household  water  treatment  for  free  chlorine  residuals  of  <  2.0  mg/L1  h  after  NaOCl  addition  and  >  0.2  mg/L  aft

Point-of-use water treatment in emergency response

Publication year
2012
Emergency type
Country

Point-of-use water treatment (PoUWT), such as boiling or chlorine disinfection, has long been recommended in emergencies. While there is increasing evidence that these and other PoUWT options improve household water microbiological quality and reduce diarrhoeal disease in the development context, it is unknown whether these results are generalizable to emergencies.