Diesel fuel spilled into a creek that feeds into the Red Deer River following a motor vehicle collision on Hwy 21 near Stettler on Thursday.
Crews worked overnight to build two berms to limit the spill from heading downstream.
Alberta Dangerous Goods personnel and Alberta Environment and Parks are working with Emergency Crews with containment and recovery operations.
The Town of Stettler is drawing water from the storage pond as a precautionary measure.
Officials do not believe the regular water treatment will be affected for long term.
Stettler RCMP andRegional Fire Department responded to the rollover of a semi-truck and trailer on Hwy 21, one mile south of Hwy 11 near Content Bridge, around 3:30 p.m. on Thursday.
Police say the truck carrying diesel turned on its side in a small creek, along with the lead trailer. The second trailer became detached and over turned into the creek.
The driver of the semi-truck suffered minor injuries and was taken to Red Deer Regional Hospital.
First responders limited the flow of fuel from the trailers. The flow of water down the creek was curtailed by the use of booms, and a berm was used to block off the creek.
The cause of the collision is still under investigation.
More information is expected later on Friday.