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Wimberley Parks and Recreation’s Commitment to Water Quality at Blue Hole

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Attention all swimmers and nature enthusiasts! As the warmth of spring gives way to the sizzling days of summer, the City of Wimberley is thrilled to have the first week of our swim season at Blue Hole in the books! At Blue Hole, your safety is our top priority. That’s why our dedicated team conducts weekly water testing to ensure that your swimming experience is not only enjoyable but also safe. We understand the importance of maintaining pristine water quality, especially in a picturesque setting like Blue Hole on Cypress Creek.

So, what exactly does our water testing entail? We adhere to stringent parameters set by the Texas Commission on Environmental Quality (TCEQ), specifically focusing on the geometric mean criterion for E. coli. This fancy term simply means that for primary contact recreation—activities like swimming or wading—the average level of E. coli bacteria in the water should not exceed 126 bacteria colonies per 100 milliliters of water. Samples are taken weekly on Wednesday mornings and brought to the lab at Edwards Aquifer Research and Data Center (EARDC) where experts process the sample and promptly give us an up-to-date result – usually by Friday of the same week.

Think of it this way: imagine you’re holding a cup of water from Blue Hole, eager to take a refreshing dip. Our goal is to ensure that each sip of that water, figuratively speaking, meets the highest standards of cleanliness and safety. If the E. coli levels exceed the designated threshold set by TCEQ, we take immediate action to address any potential concerns and notify the public accordingly. But fear not, the water was tested the week before swim season started and during the first week and test results for the last two weeks have come back at 39 and 37 E. coli colonies per 100 mL of water. There is always going to be some E. coli in natural waterways, but these results are in the low-to-average range. Stay informed and safe all summer by checking out the latest water quality test results on our Blue Hole Water Quality Test Results page by following this link –…/. Transparency is key, and we want you to have access to up-to-date information about the condition of our beloved swimming hole. So, what are you waiting for? Grab your towel, throw on your swimsuit, and book your reservation at Blue Hole Regional Park. Your adventure awaits!

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