Hence, any preferences given to pre-existing abstraction/pollution sources should usually be time-limited. Explicit consideration should therefore be given to the possibility that the regulatory approach could be partially replaced by market-based instruments (taxes or trading systems). These taxes provide incentives for polluters and resource users to change their behaviour today. They also provide long-term incentives to innovate for a more water secure future tomorrow. Although water taxes are not strongly supported by the public in all contexts, there are various ways in which this support can be increased over time (e.g. through measures to limit negative impacts on the competitiveness of certain sectors and/or on income distribution).