On a mission: Middle school student installing refill stations to eliminate plastic bottles on Hawaii Island

FloWater installer Robert Hennessy explains Friday to Nikki Montenegro how the various filters will not only purify, but also enhance, water for students at Holualoa Elementary School. (Chelsea Jensen/West Hawaii Today)

Middle school student Nikki Montenegro, left, and Keahole Center Sustainability Executive Director Candee Ellsworth, right, pose for a photo following Friday’s installation of the FloWater machine at the Holualoa Elementary School. (Chelsea Jensen/West Hawaii Today)

Middle school student Nikki Montenegro and Keahole Center Sustainability Executive Director Candee Ellsworth put the final touches -- a Keahole Center for Sustainability sticker -- on the new FloWater machine installed Friday at Holualoa Elementary School. (Chelsea Jensen/West Hawaii Today)

FloWater installer Robert Hennessy explains Friday to Nikki Montenegro how the various filters will not only purify, but also enhance, water for students at Holualoa Elementary School. (Chelsea Jensen/West Hawaii Today)

A middle school student is on a mission to eliminate plastic bottles on Hawaii Island — one specialized refill station at a time.