solution finder

Simple Handwashing Devices

Author/Compiled by
Molly Danielsson (MDML, cewas – international centre for water management services)
Executive Summary

Hand washing with soap is the simplest way to prevent a variety of pathogens from entering our bodies and making us sick. Children living in households where hand washing with soap is promoted showed to have half the rates of diarrhoea compared to children in control groups. Simple hand washing devices can be made from readily available materials and manufactured with almost no costs. Hand washing requires access to clean water, soap and a social group willing to educate about the importance of hand washing and promote hand washing as an essential part of daily routines. The success of establishing hand-washing routines in a community vitally depends on how attractive the facilities are designed and constructed. The acceptance of hand washing is strikingly increased if facilities are conveniently located, clean and properly working.

Advantages
Anyone can adapt an own version of these simple hand-washing devices and benefit from improved health.
Virtually no costs.
Reduces prevalence of diarrhoea by 50% for children under 5 years (WORLD BANK 2005).
Disadvantages
Required basic hygiene equipment (e.g. water, soap).
Maintenance and cleaning is required to keep the hand-washing facilities attractive.
Behavioural change is required to include hand washing to a community’s daily routines.

Hand washing by means of plastic bottles. Source: US AID (2009)

Hand washing by means of plastic bottles. Source: US AID (2009)

The second leading cause of death among children under five years is diarrhoea, which can be prevented by using simple hand washing devices with soap. Children below 15 years living in households where hand washing with soap is promoted showed to have half the rates of diarrhoea compared to children in control groups(GLOBAL HAND WASHING n.y.). However, in a survey in 11 developing countries, a lot of persons working in the field reported that hand washing with soap after using the toilet is hardly practised (CURTIS 2009).

 

Hand Washing: The 'Do-it-yourself-Vaccine’

Adopted from WORLD BANK (2005)

Health issues are often closely related to hygiene practices and the management of water and sanitation (see Water Sanitation and Health). Hand washing can considerably contribute to an improved and sustainable sanitation system by interrupting the transmission of disease agents (see Health Risk Management). Consequently, diarrhoea, respiratory infections as well as skin infections and trachoma are significantly reduced. A recent review (CURTIS et al. 2000) suggests that hand washing with soap, particularly after contact with faeces (post-defecation and after handling a child’s stool), can reduce diarrhoeal incidence by 42-47 per cent. These results apply universally regardless of the level of sanitation faecal contamination. Another study recently found that children under 15 years applying hand washing with soap showed to have half the diarrhoeal rates compared to children living in neighbouring communities that do not apply hand washing (LUBY et al. 2004).

Because hand washing can prevent the transmission of a variety of pathogens. Promoted on a wide scale, hand washing with soap could be thought of as a ‘do-it-yourself vaccine’.

Design Concerns for Hand Washing Devices

The most crucial component to encouraging hand washing is to make sure the hand-washing facilities are conveniently located, clean and properly working. Hand drying should also be taken into consideration. Carefully respect the habits of users when installing hand-washing facilities. The location (i.e. spot, height, etc.) of a hand sink depends on the users’ size (e.g. children or adults), the direction users are approaching the facility and their daily routines. Make sure that user comfort is ensured (e.g. install a drainage, establish frequent cleaning and maintenance, etc.). The more comfortable the facilities are, the more likely users continue to use them and the more they care and are willing to put effort into maintenance.

However, making the consequent use of hand-washing facilities an integral part of people’s daily routines involves more than just technical and practical installations and considerations. If the purpose and the benefits of hand washing are not fully understood by users, facilities are likely to be unaccepted, to be refused and to remain unused. Therefore, awareness raising has to be an integral part of any hand-washing promoting project.

Simple Hand Washing Container - A Container with a Hole in It

     Soda bottle hand sink. Source: SUSANA 2009. Hand washing device using a can hand soap. Source: MORGAN 2009     

Soda bottle hand sink, and hand washing device using a can hand soap- water is poured into the tin can to trickle down. Source: SUSANA on Flickr (2006), MORGAN (2009).

One of the simplest ways of making a hand sink is to find a container (e.g. a can or plastic bottle) and drill a hole in the bottom. After filled with water, hands can be washed while the water is slowly trickling down. This low-cost option is applied easily and very effective.

Simple Hand Washing Container at a Glance

Working Principle

Hand washing is only hygienic if water outlet is not contaminated during its use. Hanging up the container instead of putting it on the floor effectively avoids contamination of the outlet.

Capacity/Adequacy

The size of the container and the diameter of the hole determine the amount of water used per application. Since there is no switch to stop the water, the container requires refilling each time before use.

Performance

If just one hole is drilled, it is difficult to wash hands thoroughly. Drilling 4-5 holes allows to cover a greater area.

Costs

Often, containers and strings can be obtained free of charge.

Self-help compatibility

Can be built and repaired with locally available materials and amateur building experience.

Operation & Maintenance

Simple. Filling the container each time before use. Cleaning and check for proper working.

Reliability

High

Main Weakness

Requires refilling each time before each use (i.e. time consuming)

Users get wet feet unless some kind of drainage is installed.

Main Strength

Cheap and easy to install

Applicability

Universally applicable

‘Tippy Tap’ – Style Hand Sink

             Tippy Tap. Source: M. DANIELSSON (2012)

Tippy Tap. Source: M. DANIELSSON (2012)

 

A tippy tap style hand sink can be made by several ways. The most common way is to find a container (i.e. a large can, bottle or pot) and drill a hole near the top. A string and a pedal are attached at the top of the container allowing the water to flow out.

        Lesson on how to build a Tippy Tap RYAN WELLS FOUNDATION 2011 A Tippy Tap next to a toilet facitlity SUSANA 2011

Lesson on how to build a Tippy tap, and a Tippy tap next to a toilet facility. Source: RYAN WELLS FOUNDATION (2011), SUSANA on Flickr (2011)

Further instructions on how to build a Tippy Tap can be found at Akvopedia.org (AKVOPEDIA 2008).

Tippy Tap at a Glance

Working Principle

Hand washing is more hygienic if users do not get in contact with the water outlet. Using a foot pedal to tilt the water container solves this problem.

Capacity/Adequacy

Capacity depends on the size of the container. Anything larger than 25 litres would be difficult to pull with the foot pedal. About 0.4 litres is used per application.

Performance

Adequately washes hands.

Costs

Very low.

Self-help compatibility

Can be built and repaired with locally available materials and amateur building experience.

Operation and Maintenance

Container can sway and pull depending on how the foot pedal is aligned. Care should be taken to set it up with sturdy support.

Reliability

High

Main Strength

Easy to construct. Keeps water in a closed container making contamination unlikely to occur. Easy to use.

Main Weakness

Users get wet feet unless some kind of drainage is installed.

The height cannot be adjusted.

Application

Universally applicable. The hand sink is useful for promoting hygiene in situations without running water.

‘Tap Up’ Hand Sink- Simple but Requires Manufactured Fittings

                Original Andy Handy. Source: SUSANA 2009. Self constructed Tap up sink and valve. Source: DANIELSSON 2012                

Original Andy Handy sink, Self constructed 'Tap up' sink and valve. Source: SUSANA on Flickr (2009), DANIELSSON (2012).

A bucket with a valve at the bottom can also serve as a hand sink. The ‘tap up’ hand sink was developed by Mathew Lippincott for outdoor festivals in the Pacific Northwest of the US in 2011. It is based on a Finnish design called the Andy Handy (see also under ‘important web links’ below).The Andy Handy costs about $40 USD and can be ordered from Finland. However, the ‘Tap Up’ sink can easily be constructed on one’s own.

The ‘Tap Up’ Hand Sink (5 gallons version) at a Glance
Working Principle Hand washing is only hygienic if water outlet is not contaminated during its use. The water outlet is continuously washed during usage and using either brass or copper valves prevent microbes from settling down.
Capacity/Adequacy 5 gallons of water provides a minimum of 32 uses. Hand washing with the Tap Up requires about a half cup of water. 
Performance Four or more holes for the water spray allow for more effective hand washing.
Costs $6 USD
Self-help compatibility Can be built and repaired with locally available materials and amateur building experience. 
Operation & Maintenance

The container needs frequent refilling. Leaks can be repaired by means of tape or other sealing material. 

Reliability High
Main Strength Easy to construct. Easy to use. Economical water consumption.
Main Weakness Requires a support structure (tree branch or building).
Applicability The hand sink is useful for promoting hygiene in situations without running water.
Applicability

Applicable wherever running water is not an option for hand washing.

Library references

Tippy Tap

AKVOPEDIA (2008): Amsterdam: Akvo Foundation URL [Accessed: 15.05.2012]

Can hygiene be cool and fun. Insights from school children in Senegal

This research project conducted among primary schools in Dakar suggests that relatively simple low-cost interventions can have far-reaching effects in improving children’s hygiene practices. They take into account motivational factors and children’s sensitivities in relation to toilet practice and personal hygiene.

WSP (2007): Washington: Water and Sanitation Programme (WSP) URL [Accessed: 03.04.2012]
Further Readings

Can hygiene be cool and fun. Insights from school children in Senegal

This research project conducted among primary schools in Dakar suggests that relatively simple low-cost interventions can have far-reaching effects in improving children’s hygiene practices. They take into account motivational factors and children’s sensitivities in relation to toilet practice and personal hygiene.

WSP (2007): Washington: Water and Sanitation Programme (WSP) URL [Accessed: 03.04.2012]

Hand Washing Devices. How to Make and Use

The information in this simple booklet has been accumulated over many years by the writer The school is perhaps the very best place with a special focus on promoting the importance of hand washing and teaching the simplest methods of making hand washers at schools.

MORGAN, P. ; (2011): Zimbabwe: Aquamor Pvt Ltd. URL [Accessed: 19.06.2013]

How to Make Simple Hand Washing Devices

This presentation shows how hand washers can be made from tin cans and plastic bottles and cups. Hand washers of many types are easy to make and cost almost nothing. They should be fitted to every low cost (or high cost) toilet made.

SHANGWA, A. ; MORGAN, P. ; (2008): Stockholm : Ecological Sanitation Research (EcoSanRes), Stockholm Environment Institute (SEI) URL [Accessed: 20.06.2013]
Case Studies
Training Material

How to build a tap up hand sink

An illustrated guide to building a bucket hand sink requiring a drill and plastic fittings.

DANIELSSON, M. ; LIPPINCOTT, M. ; (2012): URL [Accessed: 08.07.2012]

Choose Soap Toolkit

This toolkit was created to promote hand washing with soap in households in low income settings and draws on ideas and best practices from different fields, including hygiene and health promotion, behavioural sciences, and marketing. It is designed to be used to promote hand washing with soap: at key times; within a realistic budget and time frame; and for an organization working at village level across multiple villages.

LSHTM ; (2013): London: London School of Hygiene and Tropical Medicine (LSHTM) URL [Accessed: 29.07.2013]

How to Make a Handwashing Bottle

This poster is part of the series of Water, Sanitation and Hygiene posters designed by the Water, Engineering and Development Center of Loughborough University.

REED, B. ; SHAW, R. ; CHATTERTON, K. ; (2013): Poster. (= WEDC Posters , 8 ). London: Water, Engineering and Development Center (WEDC) URL [Accessed: 28.08.2013]

Using Gourds for Handwashing

This poster is part of the series of Water, Sanitation and Hygiene posters designed by the Water, Engineering and Development Center of Loughborough University.

SHAW, R. ; (2013): Poster. (= WEDC Posters , 9 ). London: Water, Engineering and Development Center (WEDC) URL [Accessed: 28.08.2013]

Handwashing Promotion: Monitoring and Evaluation Module

This guide will walk you through planning and implementing monitoring and evaluation (M&E) for your handwashing promotion programme.

VUJCIC, J. ; RAM, P.K. ; (2013): New York: United Nations Children's Fund (UNICEF) URL [Accessed: 04.02.2014]

Alternative Versions to