 For example, in a city like Stockholm, where most people use water-closer toilets, these make use of water that is of drinking water quality standard. So one could actually say that we are shitting in our drinking water. And that might not be a big problem in a city like Stockholm where there is sufficient water resources for the entire population, but in many other parts of the world, these challenges related to water scarcity. And so that's a problem if you have a system that is not utilizing the available water resources in an optimal way. So I think World Toilet Day is an opportunity for us not only to think about how to increase access to safely manage sanitation for those people that do not have access to that right now, but also to think about how we can tweet existing systems, the infrastructure that we have for sanitation in all other parts of the world in such a way that they can not only meet the demands for public health, but also the concerns about environment and the conservation of natural resources.