Himatangi Beach Wastewater Treatment Plant, Manawatū-Whanganui, New Zealand

Himatangi Beach wastewater treatment plant is located in the small coastal settlement of Himatangi Beach, Manawatū District, Manawatū-Whanganui, New Zealand. The plant serves a population of 193 and operates under New Zealand's regulatory framework for municipal wastewater, which requires appropriate treatment to protect receiving environments. The plant provides secondary treatment, a standard level for small coastal communities in New Zealand. While specific capacity and discharge volume data are limited, the plant's discharge volume is reported at 19.00 (units unspecified). New Zealand's wastewater regulations under the Resource Management Act 1991 require discharges to meet water quality standards that safeguard aquatic ecosystems and human health. The treated effluent is discharged into the local environment near the Tasman Sea coast. The receiving waters support diverse marine life and are part of the wider coastal ecosystem of the Manawatū-Whanganui region. The plant's proximity to the coast underscores the importance of effective treatment to prevent nutrient and pathogen pollution in sensitive coastal habitats.

The plant discharges treated wastewater near the Tasman Sea coast, which ultimately drains into the South Pacific Ocean. The coastal waters in this area support diverse marine ecosystems, including fish, shellfish, and seabirds. Effective treatment is critical to minimize nutrient loading and pathogen risks that could affect recreational water quality and marine biodiversity along the Manawatū coast.