1053 factsheets

Case: Volvo Bokenäs

Last updated 27 April 2018

Case: Water Supply in Rural Eritrea

Last updated 27 April 2018

Case: Water Supply Romerike

Last updated 27 April 2018

Ceramic Candle Filter

Ceramic candle filters are simple devices made out of clay and used to filter drinking water in order to removes turbidity, suspended materials and…
Last updated 20 May 2019


Offering a training certificate is useful to the trainer because it allows you to leave a more lasting impression on those who you are training and…
Last updated 16 April 2019


A cesspit, or cesspool is a tank pit used for the temporary collection and storage of sewage or waste. The pit is sometimes lined with bricks or…
Last updated 01 June 2019

Challenges & Business Opportunities Africa

Last updated 27 April 2018

Check Dams & Gully Plugs

Gully plugs, also called check dams, are mainly built to prevent erosion and to settle sediments and pollutants. Furthermore, it is possible to keep…
Last updated 13 June 2019

Checklist when planning or locating a production factory

The following (inconclusive) checklist questions support you in identifying a proper location for the production of HWTS. See also the Buiness…
Last updated 12 August 2019

Child Hygiene and Sanitation Training (CHAST)

Children’s Hygiene and Sanitation Training (CHAST) is an approach for promoting personal hygiene among children. CHAST is based on the well-…
Last updated 19 June 2019


Water disinfection by chlorination was massively introduced in the early twentieth century. It set off a technological revolution in water treatment…
Last updated 19 May 2019

Chlorination (centralised)

As an effective yet inexpensive disinfectant, chlorination is the most commonly used disinfection method in drinking water treatment plants all over…
Last updated 22 May 2019

Choosing an innovation strategy

Last updated 06 March 2020

Cistern Flush Toilet

The cistern flush toilet is usually made of porcelain and is a mass-produced, factory-made user interface. The flush toilet consists of a water tank…
Last updated 12 May 2019