Improve Water Quality

A five-year rolling average for the Swimming and Paddling Water Quality values for all instream sites


Improve Water Quality

Baseline Only

Swimming and Paddling Water Quality Values

bookmark Goal

Increase Water Quality Index to a C-grade (50% by 2030)


YearValueMargin of Error


San Antonio River Authority (SARA)


The Water Quality score is based on the Environmental Protection Agency’s (EPA)/TCEQ Primary Contact Recreation standards defined as activities with a significant risk of ingesting water such as wading, swimming, water skiing, diving, and surfing. Water bodies are assessed using E. coli bacteria levels. These levels fluctuate during wet and dry periods of time; therefore, a five year rolling average is used.