22 plants indexed.
Kaunakakai WWTF is a secondary treatment plant serving 1,821 people in Kaunakakai, Hawaii. It discharges 757.08 m³/day of treated wastewater, with a designed capacity of 1,135.62 m³/day.
Waimea WWTF Kauai is an advanced treatment plant serving approximately 3,000 people in Waimea, Hawaii. It discharges treated wastewater into the local environment under US EPA and state regulations.
PAALAA KAI WWTP is an advanced treatment plant serving Haleʻiwa, Hawaii, with a capacity of 529.96 m³/day. It discharges 454.25 m³/day of treated wastewater, protecting local waters.
Kahuku WWTP is a secondary treatment plant serving 1,500 people in Kahuku, Hawaii. It discharges 454.25 m³/day of treated wastewater, with a designed capacity of 757.08 m³/day.
Honokaa WWTF is a secondary treatment plant serving 1,500 people in Honoka'a, Hawaii. It discharges treated wastewater into the local watershed, contributing to the protection of downstream coastal waters.
Kulaimao WWTF is a secondary treatment plant serving Pepeekeo, Hawaii. It treats wastewater for about 1,605 people with a design capacity of 757.08 m³/day and discharges 529.96 m³/day.
Papaikou Paukaa WWTF is a secondary treatment plant in Hilo, Hawaii, serving 1,326 people. It discharges 340.69 million gallons per year and has a designed capacity of 1,324.89 million gallons per year.
LANAI CITY WWTF serves Lānaʻi City, Hawaii, treating wastewater for a population of 2,140. The plant is part of Maui County's municipal infrastructure on the island of Lānaʻi.
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.
LAHAINA WWRF is a municipal wastewater treatment plant serving Kaanapali, Hawaii, USA. It treats wastewater from approximately 35,000 residents in the Maui County area.
WAILUKU KAHULUI WWTF serves approximately 37,500 residents in Kahului, Hawaii. The plant discharges treated wastewater into the Pacific Ocean via nearshore waters, supporting Maui's coastal environment.
Eleele WWTF in Port Allen, Hawaii serves approximately 7,500 residents. The plant operates under U.S. Clean Water Act regulations, managing wastewater for the Kauai community.
WAILUA WWTF serves 3,300 people in Kauaʻi County, Hawaii. The plant discharges treated wastewater into the local environment, contributing to the protection of Hawaii's sensitive island ecosystems.
LIHUE WWTF serves approximately 10,200 residents in Lihue, Hawaii. The plant discharges treated wastewater into the Pacific Ocean via the Nawiliwili coastal area.
Waianae WWTP serves approximately 37,000 residents in Waianae, Hawaii. The plant operates under the U.S. Clean Water Act, with NPDES permits regulating its discharge to protect local waters.
Waimanalo WWTF serves 8,200 people in Waimanalo Beach, Hawaii. The plant operates under the US Clean Water Act, treating wastewater for a coastal community on Oahu's eastern shore.
WAHIAWA WWTP serves approximately 20,207 people in Wahiawa, Hawaii. The plant operates under U.S. Clean Water Act regulations for municipal wastewater treatment.
Honouliuli WWTP serves approximately 189,000 people in Kapolei, Hawaii, as a key municipal wastewater facility on Oahu. It operates under US EPA and Hawaii Department of Health regulations.
KAILUA WWTP serves approximately 82,000 people in Kailua, Hawaii. The plant discharges treated wastewater into the local environment, supporting water quality in the region.
Sand Island WWTP serves Honolulu, Hawaii, treating wastewater for approximately 418,655 people. The plant discharges into the Pacific Ocean via a deep ocean outfall, supporting coastal water quality.
UtilityRadar indexes 22 wastewater treatment plants in Hawaii, with treatment level, capacity, operator and discharge data on each record.
Among the plants on this page, the most-referenced operator is Honolulu Board of Water Supply. UtilityRadar's records show 1 plant linked to this operator.
Among the indexed plants, WAIMEA WWTF Kauai has the highest designed capacity at 2,650 m3/day.