Racing to Clean Up Falls Lake—With Algae

This story originally published in The 9th Street Journal.

Pollution in Falls Lake has long concerned environmentalists and others, even landing parts of the lake on North Carolina’s list of impaired waters. Now the city is pursuing an unconventional way to treat the lake’s water quality: algae.

The city plans to build an “algal floway” in the Falls Lake watershed, and is currently seeking a site for the project. Also known as an algal scrubber, an algal floway is a pollution control measure that uses algae to remove nutrients from water…

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