Coral Bay Wastewater Treatment Plant, Western Australia | Coastal Community Facility

Coral Bay wastewater treatment plant is located on Coral Bay Road in the Shire of Carnarvon, Western Australia, serving a small coastal community of 263 residents. The plant operates under Australian state and federal environmental regulations, which require secondary treatment for coastal discharges to protect sensitive marine environments. The facility provides secondary treatment, meeting the standard for organic matter and suspended solids removal before discharge. With an annual discharge volume of 68.10 megalitres, the plant's effluent is released into the local environment near the Ningaloo Coast, a region known for its fringing coral reef and diverse marine life. The treated wastewater enters a coastal environment that ultimately drains into the Indian Ocean. The area supports a rich array of aquatic species, including whale sharks, sea turtles, and coral communities, making effective wastewater management critical to preserving water quality and ecosystem health.

The plant discharges treated wastewater into the coastal waters of the Ningaloo Coast, which flows into the Indian Ocean. This region is ecologically sensitive, supporting a fringing coral reef system and diverse marine life such as whale sharks, manta rays, and sea turtles. The shallow coastal waters are vulnerable to nutrient enrichment, making secondary treatment essential to minimize algal blooms and protect coral health.