PWW Studies

Monitoring Studies, Case Studies, Research Reports

Biosand Filter Performance After Periodic Abandonment in Honduran Schools

November 2017. Published by: Cordelia Stewart (Bowdoin College), Barbara Stewart (Bangor High School), Catherine Hopper (University of Maine), Ellen Tobin (Water for ME), Kirsty Moriarty (Water for ME), Julia Fasse (Tufts University), Carolyn Meub (Pure Water for the World)

The following chart demonstrates the process and results of a collaborative field study conducted to determine the viability and performance of the biosand filter on a school schedule with intermittent use.

View Biosand Filter Field Study Chart: Periodic Abandonment.


Incorporating Hygiene and WASH Elements into Honduran Curriculum for Trojes

May 2016. This program is a part of Pure Water for the World’s (PWW) hygiene program in schools in rural Honduras. It was designed to support teachers with the integration of hygiene themes into the Honduran Curriculum. Several successful pilot projects have been conducted. Read more


PWW’s Sawyer Filter Experiment

June 2015. Pure Water for the World is always interested in learning about emerging safe water treatment technologies. The Sawyer PointOne water filters were recommended to PWW, with initial reports indicating great promise for longevity and effectiveness in highly remote regions of developing countries. However, after testing these filters in the field, follow up monitoring reports proved otherwise. Read more

Study published in the Journal of Water, Sanitation and Hygiene for Development


Evaluating the Need for Menstrual Hygiene Management in Trojes, Honduras

January 2015. Surveys and focus groups conducted in communities surrounding Trojes have concluded that Pure Water for the World (PWW) needs to work with local health professionals to establish a menstrual hygiene management component to the current PWW health education curriculum. Key findings include: adolescent girls reported missing school due to menstruation related causes; women and girls are negatively altering their daily hygiene habits and diets during menstruation; men and boys have a lack of understanding and respect for women and girls who are menstruating. Read full report

 


Other WASH Industry Studies

Shared With Permission

The Effects of Periodic Abandonment on the Reactivation Period of Biosand Filters on a School Schedule

November 2017. Published by: Barbara Stewart (Bangor High School), Catherine Hopper (University of Maine), Cordelia Stewart (Bowdoin College), Jordyn Miller (Bangor High School), Claire Tobin (Colorado College), Ellen Tobin  (Water for ME)

The following chart demonstrates the results of a collaborative lab study to evaluate the impact of reactivation periods and pause periods typical of a school schedule on the microbial reduction, turbidity and flow rate of biosand filters.

View Biosand Filter Lab Study Chart: Reactivation Period.


The Extended Laboratory Use of Ceramic Water Filters with Antimicrobial Silver Ion Technology

November 2017. Published by: Jonathan Musor (University of Maine),Catherine Hopper (University of Maine), Barbara Stewart (Bangor High School), Cordelia Stewart (Bowdoin College), Ellen Tobin  (Water for ME)

The following chart demonstrates the results of a collaborative lab study to evaluate the use of Silver NanoParticle (AgNP) Technology, specifically the Ceramic MadiDrop tablet, in conjunction with safe water storage application.

View Lab Study Chart: Use of Antimicrobial Silver Ion Technology.


Impact of Surface Maintenance on BioSand Filter Performance and Flow

February 2017. Published by: Sarah Singer, Brain Skinner and Raymond E. Cantwell.
The BioSand filter (BSF) is a household scaled, intermittently operated, slow sand filter. The BSF requires maintenance to remove trapped sediments. This study evaluated the effects of maintenance on the filter’s flow rate and performance. Read Study