The Consumer Council has commissioned several studies concerning the revision of the two European standards for water slides and has provided — together with the Austrian TUEV — comprehensive text proposals for changes of these standards. They formed the basis for the revision which took a total of 4 years. The revised standards — the number of pages has increased considerably — were published in August 2010. The result of the process is quite satisfactory and constitutes a big improvement compared to the previous documents. Hence, the not insignificant investment has really paid off.