Linda Mar Beach's Fecal Bacteria Crisis Finally Traced to Leaking Sewers

Linda Mar Beach in Pacifica continues to face long-standing issues with fecal bacteria contamination. Officials have now identified a likely cause after decades of uncertainty. The problem is most severe at the southern end, where pollution levels far exceed safe limits.

The beach has been a known bacteria hot spot for years, according to the Surfrider Foundation. Until recently, the exact source remained unclear, with possible culprits ranging from wildlife to faulty infrastructure. New findings point to leaking sewer pipes as a major contributor.

San Pedro Creek, which flows into the beach, contains bacteria linked to human waste. Tests show contamination levels 30 to 40 times higher than what is considered safe for human health. The issue worsens during the rainy season, when runoff increases. The problem may stem from ageing Orangeburg pipes, a material known for cracking and leaking. These pipes were widely used in sewer systems decades ago. In response, the City of Pacifica is now offering residents £2,000 to replace their old sewer laterals. Efforts to tackle the pollution date back to 1988, when the San Pedro Creek Watershed Coalition was formed. Despite this, the contamination persists. Visitors are advised to avoid the southern end of the beach and stay near the Taco Bell Cantina area instead.

The city’s incentive programme aims to reduce leaks from outdated pipes. Until improvements are made, warning signs will remain in place. Officials continue to monitor the situation closely, particularly during wet weather.