For four months KSAT has been looking into private water company CSWR that owns water wells in the Floresville area, producing brown and overly chlorinated water. They're trying to raise rates again and customers across Texas are protesting.

The K3 raw water well had a sample test positive for E. Coli in Fair Oaks Ranch, city officials confirmed on Friday. Raw water is a mix of groundwater, rainwater and water from wells. The water is tested as a precautionary measure prior to the water entering the distribution system. It must pass all sample tests before going back into service. The Texas Commission on Environmental Quality has been notified of the situation, city officials said.