The weather is expected to remain hot and dry in the area and the Ministry of Natural Resource Operations is advising there may be a negative impact on stream flows if water isn't conserved.
The government is calling for water-use reductions of 20 per cent or more from all municipal, agricultural and industrial users.
While stream flows are low, groundwater measures taken at provincial observation wells also show low water levels and well owners are encouraged to save water.
If conditions reach a Level 4 drought, provincial water managers may use their authority to temporarily suspend short-term water permits or water licences in affected watersheds.
The ministry says if water levels go even lower the shortages could affect people, agriculture industry and fish stocks.