The San Diego coast faces beach closures due to rising bacteria levels. Photo via @ChulaVistaToday X

Health officials Thursday issued a general rain advisory for San Diego County coastal waters due to contamination by urban runoff following rain.

“Swimmers, surfers and other ocean users are warned that levels of bacteria can rise significantly in ocean waters, especially near storm drains, creeks, rivers and lagoon outlets that discharge urban runoff,” Department of Environmental Health and Quality officials said.

Activities such as swimming, surfing and diving should be avoided for 72 hours following rain. The most recent rain event occurred Thursday.

The rain for urban runoff contamination applies to beaches from San Onofre State Beach south to Border Field, including Mission Bay and San Diego Bay. While many coastal outlets are posted with permanent metal warning signs, additional temporary signs are not posted for general advisories.

The anticipated lift date, subject to change, is Sunday at 9 a.m., health officials said.

–City News Service