There is a growing need to more efficiently use and reuse the water we extract from nature. However, realizing these water reuse schemes requires collaboration between the public and private sector, and requires investments in water infrastructure. The development of business propositions that consider the interest of all stakeholders is a critical success factor. AquaVest develops objective (data-based) system solutions and provides transparency in the costs and benefits for each stakeholder involved. This facilitates constructive dialogue among the stakeholders when it comes to pain-gain sharing, and who should pay what part.