Omni Water Solutions, a portfolio firm of the Austin Technology Incubator (ATI), raises a $4m venture round led by Austin Ventures.

Mobile water treatment solutions firm Omni Water Solutions, affiliated with the University of Austin at Texas, has raised $4m in a venture round led by Austin Ventures (AV).

The firm joined the University’s Austin Technology Incubator in mid-2011, and has since gone on to both raise the latest $4m round, and a $7.9m series A last year, also led by AV.

Along with AV, a further 15 investors have participated in the latest round, according to local news provider Austin…