Emergency crews are responding to a hazardous materials incident Friday in San Francisco.
The San Francisco Fire Department said the incident involves muriatic acid and chlorine at the Presidio Golf and Concordia Golf Course. At least one person was taken to a hospital due to the incident.
Hazardous materials units and fire crews are on scene investigating.
Residents and the public should avoid the area.
No other information was immediately available.
*Hazardous Materials Incident*
San Francisco Fire Department crews are currently on scene of an active hazardous materials incident in San Francisco at the Presidio Golf & Concordia Golf Course involving muriatic acid & chlorine.
Our HazMat units and fire companies are… pic.twitter.com/eJG6X3WWib
— SAN FRANCISCO FIRE DEPARTMENT MEDIA (@SFFDPIO) September 4, 2026