BWSI advantages Satellite remote sensing is ideal for detecting Cyanobacteria in large bodies of water at a very low cost. Resolution is 30 meters square and Cyanobacteria can be detected in parts per billion. Accuracy has been validated against direct water sampling. BWSI™ service is much lower in cost when compared with today’s method of direct sampling. BWSI™ can detect blooms early, lowering the cost of treatment chemicals and often saving the cost of the BWSI™ service. Less chemical treatment yields less damage to the water body.