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In this paper we present the experimental research findings on droplet collision behavior of water of different quality typically used in industrial process cycles. We explore the boundary conditions between interaction regimes as well as droplet collision characteristics. In the experiments, we varied the droplet sizes, velocities, and impact angles in the ranges that are typical of industrial applications. The following liquids were used: tap water, snow melt water, two types of mineral water of low (4–7 g/l) and medium (12–18.5 g/l) mineralization level. For these liquids, we recorded the droplet collision regimes (coalescence, bounce, disruption, and separation) as well as the number and size of secondary fragments. We determined how these liquids differed in terms of droplet collision regimes and secondary droplet size distribution. The liquid surface areas were calculated before and after collision.