Oahu's Seven "At Risk" Main Sewer Lines: Image Courtesy of Sierra Club Hawaii, 1000 Friends of Hawaii and Our Children's EarthGet out your party hats and thigh-high wading boots because it's time to "celebrate" the one year anniversary of Honolulu's worst raw sewage spill.

Over a six day period in March of last year, more than 48 million gallons of raw sewage were diverted directly in Ala Wai canal while the capital of the Aloha state received a record 40 days straight of rain.