First Nations leaders, community activists and university scientists say they're growing increasingly worried about the Qu'Appelle Valley chain of lakes, with water quality sometimes dipping below recreational use standards and toxic algae blooms increasing in severity. "We're going to get hit with some wicked blue-green-purple algae if we don't start building policies and protecting our fresh water," said Aura Lee MacPherson, chair of the Calling Lakes Ecomuseum, an advocacy group that works to protect the Lower Qu'Appelle River watershed, in southeastern Saskatchewan.