Overview
Kihei WWTF serves approximately 44,325 residents in Kihei, Hawaii, on the island of Maui. The plant discharges treated wastewater into the local environment, supporting water quality in the region.
Kihei WWTF is a municipal wastewater treatment facility located in Kihei, Maui County, Hawaii, United States. Serving a population of around 44,325, the plant is part of the island's critical water infrastructure, managing wastewater from residential and commercial sources in the Kihei area. As a medium-sized agglomeration, the plant operates under the U.S. Clean Water Act, which requires National Pollutant Discharge Elimination System (NPDES) permits for all discharges. Treatment standards are set to protect receiving waters, with secondary treatment being the minimum requirement for municipal plants of this scale. The treated effluent from Kihei WWTF is discharged into the local watershed, which ultimately drains to the Pacific Ocean. The coastal waters of Maui support diverse marine life, including coral reefs and nearshore habitats, making effective wastewater treatment essential for preserving ecosystem health and recreational water quality.
Environmental context
Kihei WWTF discharges into the coastal waters of Maui, which are part of the Pacific Ocean. The nearshore environment supports sensitive coral reef ecosystems and diverse marine species. Proper treatment is critical to prevent nutrient pollution and protect water quality for recreation and aquatic life.
Frequently asked questions
Kihei WWTF is located in Kihei, on the island of Maui, in Maui County, Hawaii, United States.
Kihei WWTF serves approximately 44,325 residents in the Kihei area.
Kihei WWTF discharges treated effluent into the local watershed, which ultimately flows to the Pacific Ocean near Maui's coast.
Kihei WWTF operates under the U.S. Clean Water Act, which requires an NPDES permit from the state of Hawaii to regulate discharges and ensure water quality standards.
Under the Clean Water Act, municipal plants of this scale are typically required to provide at least secondary treatment, which removes biodegradable organic matter and suspended solids.
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