The Bandera County River Authority and Groundwater District (BCRAGD) conducted a thorough assessment of water samples from various locations along the Medina River, Medina Lake, Sabinal River, and their tributaries on July 19, 2023. The aim was to measure the levels of E. coli bacteria, a harmful microorganism found in the gut of warm-blooded animals, which can cause illness in humans if ingested.
The Texas Commission on Environmental Quality (TCEQ) has set a strict standard for E. coli presence in surface water. According to these guidelines, no primary contact recreation should take place in waters where the number of E. coli bacteria exceeds 399 most probable number (MPN) per 100 mL of water. This restriction applies to activities that could result in the total submersion of the head underwater, as such activities carry a higher risk of ingesting the harmful bacteria.
The results of the recent water sampling revealed that two popular recreational spots have exceeded the safe limit of E. coli bacteria. A warning has been issued for Bandera City Park @ SH173, which tested at an alarming 1414 MPN, and North Prong, Wallace Creek, which tested at 1120 MPN. These levels greatly surpass the TCEQ's safety threshold, indicating a significant health risk for anyone who comes into contact with the water in these areas.
The presence of E. coli bacteria in water bodies can lead to severe health issues if proper precautions are not taken. The symptoms of E. coli infection may include nausea, vomiting, stomach cramps, and diarrhea. In severe cases, it can lead to more serious complications, especially in vulnerable populations such as young children, elderly individuals, and those with weakened immune systems.
Authorities urge the public to exercise extreme caution and avoid any activities that involve direct contact with water in the affected areas until further notice.
