08/28/2026
Thankful for Bandera County River Authority & Groundwater District and their dedication to testing the Medina River & Lake levels……testing results from our location is less than 1 MPN…see below for more details!
New Summer In-House Surface water quality testing results are now available from August 26, 2026.
These results are also displayed on a map on our website, along with updates on weather conditions, water flow, and E. coli counts for popular sites throughout Bandera County. Visit our website at https://bcragd.org/water-quality-testing/
E. coli is a bacteria found in the gut of warm-blooded animals and is known to cause illness in humans if ingested potentially. No primary contact recreation should take place if the number of E. coli exceeds 399 most probable number (MPN) per 100 mL of water. This standard is set by the Texas Commission on Environmental Quality (TCEQ) in the Texas Administrative Code (30 TAC §307.7).
This means no one should participate in activities that could result in the total submersion of the head underwater if counts exceed the 399 MPN standard.
There is ALWAYS a possibility of infection from E. coli or other waterborne illnesses. Never drink or ingest river water without proper disinfection; always swim at your own risk.