TEXAS -- A new report says many of Texas' waterways are too polluted for people to go swimming in. 

Two environmental groups analyzed water testing data from the Texas Commission on Environmental Quality in 2017. Environment Texas and the Frontier Group found that fecal bacteria at Texas beaches, rivers and lakes frequently reached unsafe levels that year.

The groups report that more than half of all Texas beaches that were tested for bacterial contamination were unsafe for swimming on at least one day during 2017. More than 700 freshwater sites tested as having levels of bacterial contamination that would have made them unsafe for swimming last year.

“It’s a variety of sources. One is storm water runoff pollution,” Luke Metzger with Environment Texas said. “When it rains, you know the rain picks up dog poop and other waste off of our streets and rushes it into our creeks and waterways.”

Click the video link above to watch the full interview with Metzger and his recommendations to policymakers to limit water pollution.