biofiltration

1980s:

In '82 and '87, studies began to show that in water with high levels of chemicals - contributed to storm runoff - fish were both dying off if present and then began avoiding those water sources. This led environmentalists to begin questioning how the storm runoff could be reduced. 

1990s:

"It was first developed by Prince George’s County (PGC), Maryland, Department of Environmental Resources in the early 1990′s as an alternative to traditional BMP structures."

>What Is BMP? BMP refers to Best Management Practices, another, less natural method of wastewater control.

1999:

Companies such as BioFilter Systems move development of biofiltration into high gear when the United Nations Environmental Project announces that “the world water cycle seems unlikely to be able to adapt to the demands that will be made of it in the coming decades.”

2007:

Bluewater Bio and partners used their new product, FilterClear, at King Abdullah University of Science and Technology in Saudi Arabia. The product proved succesful in these initial trials: reducing operating costs, increasing water availability, and decreasing chemical usage. 

2009:

Bluewater Bio's FilterClear (see above) was approved for use by the Saudi Arabian government and a plant was commisioned in March,  which began operaion in April of the same year.