Surface Water Quality Assessment
Welcome to the Surface Water Quality Assessment webpage.
Our purpose is to assess data and report on the quality of surface waters throughout the state. This information is found in the Integrated Report, made up of the 303(d) List of Impaired Waters and 305(b) Condition Report. An Integrated Report cycle occurs every two years.
Contact Us/Feedback
WQAssessment@waterboards.ca.gov
Subscribe to our email lists.
Select "Integrated Report- 303(d)/305(b)" in Water Quality.
Integrated Report Cycles
- In Progress: 2026 Integrated Report
- In Progress: 2024 Integrated Report
- Current: 2020-2022 Integrated Report
- Past: 2018 Integrated Report
- Previous Integrated Reports: 2014 - 2016 and prior
