The San Antonio River is among the bodies of water in Texas that can have high levels of fecal contamination.

Credit: Facebook / Mission Kayak More than half of Texas rivers, lakes and swimming holes - including some in San Antonio - had dangerous levels of fecal bacteria at least once during the past two years, according to a new report.

The analysis from Environment Texas Research & Policy Center found that 59% of the 367 monitoring locations at Texas' inland waterways recorded at least one day when E.