The department is still advising people not to draw water from the Athabasca River downstream from the Obed Mountain Mine site near Hinton.
The department says water samples already taken don't indicate any health risks.
But government staff are continuing to test the water and results are to be shared with Alberta Health Services and other agencies.
Further analysis is also to determine what, if any, environmental impact there may have been.
Sediment was released last week from an on-site water storage pond that contains high levels of suspended solids such as clay, mud, shale and coal particles.
The government is also advising farmers not to let livestock drink from the river until the full results from water samples are available.
It also advises that residents may see a noticeable colour change on the river as the sediment moves downstream.