Profile: Dansville Water Systems, LLC installs and supplies well pumps. Our service line includes pump installation, water conditioning, bench testing pumps and installation services. Ultra violet light is installed on the water line after it leaves the pressure tank, and is preceded by an in-line filter housing to filter out sediment before the water passes through the lamp. Stenner feeder pump works well for low producing wells or shallow wells, as it is installed with a retention tank.