The closure took effect immediately, and the coastline will remain off-limits while water quality testing is conducted. Officials are urging everyone — including pet owners — to stay away from the water and sand until results confirm the beach is safe.

E. coli is a type of bacteria that can cause severe gastrointestinal illness, including stomach cramps, diarrhea and vomiting. Children, older adults and people with weakened immune systems are particularly vulnerable to serious complications. Health officials have not yet confirmed the source of the contamination, and it is not known whether the bacteria originated in the water, sand or elsewhere near the shoreline.

The timing of the closure comes as Santa Cruz County's coastline faces additional pressure from a high surf warning that has already prompted alerts for beaches across the region. The combination of rough surf and a bacterial investigation means residents should be especially cautious near the water this week.

Capitola Beach is a hub for local families, surfers and visitors, and its closure is likely to disrupt weekend plans and local businesses that depend on beach traffic. The county has not provided a timeline for when testing will be complete or when the beach might reopen.

This is a developing story. Residents are advised to monitor county health announcements for updates on water testing results and the beach's reopening status.