Storm-soaked runoff has turned parts of Nānākuli Beach Park into a murky mess, prompting the Hawaiʻi Department of Health to issue a brown water advisory for the popular West Oʻahu shoreline. Officials warn that water in the cove and along nearby stretches of coast may appear brown, turbid or cloudy and could carry pollutants that pose a health risk. Lifeguards and county crews may put up warning signs while the state collects samples and tracks how conditions change.
The alert went public Thursday on X, where the Hawaiʻi State Department of Health flagged the Nānākuli Beach Park cove, Mermaid Caves, Nānākuli Stream, the lifeguard tower and the area by St. Rita Catholic Church as all falling inside the advisory zone. The post pointed people to the Clean Water Branch’s online notification system for updates on timing and water quality testing.
What The Brown Water Warning Really Means
The state’s Clean Water Branch notes that “usually coastal waters are safe to enter due to tidal flushing after 48 hours,” and it urges residents and visitors to steer clear of surface waters after heavy rain. The Hawaiʻi Department of Health Clean Water Branch cautions that stormwater can sweep sewage, animal waste, pesticides, chemicals and other debris straight into the ocean, which increases the risk of gastrointestinal illness along with skin, eye and ear infections.
Why West Oʻahu Keeps Getting Hit…