Overview

• Three water samples taken Tuesday along the Sentosa course showed E. coli levels between “good” and “excellent” by World Aquatics and WHO criteria.
• World Aquatics and the Singapore 2025 Organising Committee, with input from sports medicine and technical committees, oversaw rigorous testing before approving competition.
• The men’s 10 km open water race concluded Wednesday afternoon, marking the first open water final completed after two days of postponements.
• The women’s 10 km race is scheduled for later Wednesday under the same safety protocols and ongoing water quality monitoring.
• Similar E. coli–related delays affected open water events at the Paris 2024, Tokyo 2021 and Rio 2016 Olympics, highlighting the challenge of safe open water venues.