A set of indicators, i.e. the city blueprint, has been developed to assess the sustainability of the water cycle (SWC). The city blueprint comprises a set of 24 dedicated indicators divided over eight categories, i.e. water security, water quality, drinking water, sanitation, infrastructure, climate robustness, biodiversity and attractiveness and governance including public participation. This study reports on three other cities, i.e. two Dutch cities (Maastricht and Venlo) and one city in a developing country (Dar es Salaam in Tanzania).
Assessments of cities can be done in a couple of days. The most critical factor in the assessment of the sustainability of the water cycle is the availability of high quality data to score the indicators. This study shows that in some cases, simplifications and assumptions are needed to quantify the indicators. These aspects are discussed.