This presentation for the 2010 ECELAW Summary Series looks at how one can ensure that an aquaculture operation is not having a negative impact on water quality. It starts out by examining the aquaculture industry and the controversy over it, as well as its benefits and risks. The regulatory and constitutional considerations are briefly examined. The legislative sources for federal and provincial responsibility over aspects of the industry are reviewed, as are law and policy changes. If one has a concern over a new or existing aquaculture operation, one