Do not drink untreated water from water bodies regardless of whether noticeable blooms are present. In addition to possible health risks from algal blooms, there are other gastro-intestinal illnesses which can also be contracted by drinking untreated water, including Giardiasis or Beaver Fever . Do not wade or swim in water containing visible blooms. If blooms are present, do not allow livestock or pets access to the affected water. Alternative sources of drinking water for livestock and pets should be provided.
Blooms intensify in non-moving or stagnant water.
If possible, natural blockages in creeks flowing into or out of the water body should be removed to encourage the free flow of water. Divert surface run-off from livestock feedlots away from streams and lakes. Blooms flourish from run-off flowing through animal waste. Fortunately, most blooms are short-lived and an affected area will likely be safe again in a number of days or within a one to two week period. If unsure, contact your local health office, or the nearest Ministry of Environment, Lands and Parks office.