Reservoirs, Rainwater and the Big Island of Hawaii

A drinking water system on Hawaii’s ‘Big Island’ draws mostly from rainwater. It will soon add membrane filtration to expand capacity and block out pathogens.
Reservoirs, Rainwater and the Big Island of Hawaii
Andrew Higa, left, water service district supervisor of the County of Hawaii Department of Water Supply, and Ron Ferrer, water treatment plant operator Grade 4.

Ancient civilizations collected rainwater  for drinking. That practice continues even today on the Big Island of Hawaii, where rainwater is a major source of drinking water for more than 10,000 people on the island’s northern tip.

At the Waimea Water Treatment Plant, water...

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