Question

Can someone explain what this means?

The key policy problem regarding water for this purpose is the need to allocate water supplies in a way that properly balances oil sands production needs with ecosystem and human needs in the region. While the amount of water consumed per barrel of oil produced has been declining, a 2006 Government of Alberta report warned that there simply may not be enough available water to meet the needs of all planned oil sands projects while maintaining adequate stream flows.

Answer 1

We need to balance our water use fairly between the oil industry, human needs, and the ecosystems. A 2006 report warned that there simply wasn't enough water for all of these uses.