Recent developments in the right to water saga points out the unlikelihood of the human right system to pinpoint the exact amount of litres as the 'minimum core' on the right to water. Instead, the system leans towards 'reasonableness' approach. According to the Water Law Blog:

Thus, the ex ante standard setting required by the materialisation of a determinate minimum core for human rights to water inevitably leads to the theoretical acceptance of exceptional situations where more water than actually required to cover basic human needs must be provided to a specific individual, BUT ALSO to situations where less water that actually required to cover basic human needs will be provided to a specific individual.