Cal Tri Events Water Quality Reports

Cal Tri Events adopts The EPA Recommended Recreational Water Quality Criteria.

Swimming and other recreational activities in contaminated water can make people ill. The EPA has developed criteria to protect people from pathogenic organisms, such as viruses and bacteria, and their associated toxins in water bodies including lakes, rivers, and beaches. In the event that state and local standards are more stringent, those standards will be used.

Cal Tri Events adopts the EPA Recommended Recreational Water Quality Criteria as part of our safe, affordable, and accessible mission. There are many examples of illnesses that originate from poor water quality that are written off as the flu.

• Water Quality Testing. Trusted, local agencies are ideal organizations for the collection and analysis of water samples. If those resources are unavailable, water samples will be analyzed by a certified laboratory.
• EPA Recreational Water Quality Criteria (RWQC). Water quality test results will be compared against the EPA RWQC to determine if the water quality is safe enough.
• Know Your Rights. It is an athlete's right to see the water quality safety report before the race. At Cal Tri Events races, the report will be posted on the official race page. Trust but verify is a best practice at any race when it involves the safety, health, and wellness of you and your family.

2026 Race Series

Below are the water quality reports for 2026 Cal Tri Events races as they become available.

Archived Reports