Changes

Successful introduction is variable however, depending on capacity and motivation of early adopters. If people built their pump themselves, they are usually kept in good working condition for years.

* [http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=4&ved=0CDYQFjAD&url=http%3A%2F%2Fgeorg-ritter.info%2Fwp%2Fwp-content%2Fuploads%2F2011%2F12%2FWATER_FOR_EVERYBODY.pdf&ei=LeOBUIvZB4iNyAHIxIGICA&usg=AFQjCNE0osW_S6BAHIAAGI_fmUdVg0iBXA&sig2=jLQeW6LfMwrPKvlAvXP_bw&cad=rjt WATER FOR EVERYBODY: A Selection of Appropriate Technologies to be used for Drinkable Water EMAS.] Wolfgang Buchner, 5th edition, 2006.

* [http://vimeo.com/8454714 How to build a kitchen sink].