In urban areas around the world, our natural water is suffering from pollution and other human impacts. You can help us protect our water by providing vital information on water quality, local land use, and nearby environment. We could never collect this much information ourselves, so we are asking you to help us.

This spring we're bringing the WaterBlitz to the Thames Valley for an eleventh time and to Dublin, Paris and Luxembourg for a second time. Having repeated measurements is vital to provide robust, scientific evidence, which can be used to make real changes.