Update at 3:20 p.m. March 23: The ongoing wastewater spill from the Līhuʻe Wastewater Treatment Plant ceased around 8 p.m. on March 22.
Approximately 280,000 gallons were released during peak flows from 10 a.m. on March 17, 2026, through March 22. The discharge was contained within the facility and did not reach any public areas or state waters, and does not pose a risk to public health, according to the Wastewater Management Division.
High flows may continue depending on rain events, and additional intermittent discharges may occur during storm conditions. County crews are still actively monitoring and managing flows to ensure that any future discharge remains contained within the treatment plant.
Out of an abundance of caution, additional disinfection was conducted in affected areas within the site.
The spill was caused by decreased capacity of an underground injection control well and the Wastewater Management Division continue to work on short-term and long-term projects to address the injection well capacity issue.
For more information, please contact Donald Fujimoto with the Wastewater Management Division at 808-241-4083 or via email at dfujimoto@kauai.gov.
Original story at 6:47 p.m. March 22: The public is advised of an ongoing wastewater spill of about 70,000 gallons per day at the Līhuʻe Wastewater Treatment Plant.
The discharge remains confined within the facility and has not reached any public areas or state waters, and does not pose a risk to public health, according to a news release from Kaua‘i County Sunday afternoon.
The intermittent discharges began at approximately 10 a.m. on March 17 and are occurring during peak flow periods, including early morning, late morning, and evening hours. The spill is due to decreasing UIC injection well capacity, according to the news release.
High flows may continue depending on rain events, and additional intermittent discharges may occur during storm conditions.
Out of an abundance of caution, additional disinfection is being conducted in affected areas within the site. County crews are actively monitoring and managing flows to ensure the discharge remains contained within the treatment plant.
The Wastewater Management Division is working on both short-term and long-term projects to address the injection well capacity issue. The division is also coordinating with the Hawai‘i Department of Health to evaluate options to expand UIC injection well capacity and increase R-1 reuse distribution to better handle higher flows.
For more information, contact Donald Fujimoto with the Wastewater Management Division at 808-241-4083 or via email at dfujimoto@kauai.gov.
