Boerne is home ground for TR Drilling & Service. Our yard sits on FM 474, and we have drilled and serviced water wells across Boerne and Kendall County since 1985. If you are buying a Hill Country tract, building a home, or watching an older well start to struggle, this guide covers what actually matters here: how deep wells run, the Trinity Aquifer layers under your property, the Cow Creek district registration we handle for you, what the drought is doing to local water levels, and how a well project really goes from first call to water at the tap.
The ground under Boerne: the Trinity Aquifer
Almost every private well around Boerne draws from the Trinity Aquifer, a stack of limestone and sand layers that the whole central Hill Country sits on. It is not one single layer. Drillers split it into three:
- Upper Trinity (Glen Rose limestone). The hard, fractured limestone you see in roadcuts around Boerne. It carries water in places but unevenly, and many tracts drill straight through it to reach something more dependable.
- Middle Trinity (Cow Creek limestone and Hensell sand). For a lot of Kendall County wells this is the workhorse zone, a more consistent water-bearing interval below the Glen Rose.
- Lower Trinity (Hosston and Sligo sands). The deepest and often most reliable supply, especially closer to town and east toward the Balcones Escarpment where the upper layers thin out. Reaching it means a deeper well, but on many tracts it is the dependable answer.
Which zone makes sense for your property depends on where you sit, what the neighbors' wells did, and how much water you need. That read of the local ground is the most valuable thing an experienced local driller brings. Our guide to how deep Hill Country wells go digs into the depth question, and you can watch the current Trinity Aquifer water levels as you plan.
Water trouble now, or planning ahead? Tell us what your well is doing and we will give you a straight answer and a free quote, often the same day.
How deep are Boerne wells?
There is no single number, and anyone who quotes one sight-unseen is guessing. Around Boerne, wells commonly run from a few hundred feet to over 1,000 feet, depending on which Trinity zone carries dependable water under your tract. The limestone can change fast from one ridge to the next, so a well a mile away tells you only so much. Before we drill, we look at your specific acreage, the known behavior of the formations underneath it, and your household demand, then give you a realistic depth range up front. Getting the depth, casing, and pump right for your ground is the difference between a well that produces for decades and an expensive dry hole.
Permits: the Cow Creek Groundwater Conservation District
Boerne and the rest of Kendall County sit inside the Cow Creek Groundwater Conservation District. That means a new well has to be registered with the district before drilling, and depending on the well's use and size it may also need a permit. It is not something you have to navigate alone. As a licensed Texas driller, we file the district paperwork, handle the spacing and depth details the district asks for, and submit the required State of Texas well report once the well is complete. If you want to understand the difference, we explain permits versus registrations in plain terms. District review time is usually the part that adds the most calendar days to a project, which is why we start it early.
What drilling a well in Boerne looks like
A well is a managed project, not a single afternoon. Once the district paperwork is moving, the rig comes to the spot you approved and drills, usually with an air-rotary rig built to hammer through Hill Country limestone. We set and grout steel or PVC casing to keep the hole open and keep surface water and contaminants out of your drinking water, then develop the well to clear out fines and measure what it actually yields. From there we size and set the pump, connect the pressure tank and controls, and disinfect and test the system before it ever serves your house. Our water well drilling page and our step-by-step drilling walkthrough cover each stage, and the pump installation page explains how we match the pump to your well and your demand. The active drilling is often quick. What stretches the timeline is the district review and the pump install, so plan on a few weeks from signed quote to water at the tap.
The drought and your Boerne well
The Trinity draws down hard in dry years, and Kendall County has been living with a long stretch of drought. A well that was perfectly adequate ten years ago can come up short simply because the regional water level has fallen below where the pump sits. If you are planning a new well, that is an argument for siting it into a dependable zone rather than cutting the depth short to save a little now. If you already own a well that is weakening, the drought may be the cause rather than the equipment. We keep an eye on Trinity water levels and the local drought stages and restrictions because they shape what a reliable well looks like today.
When a Boerne well needs repair, not a new one
Plenty of the calls we get in Boerne are not new wells at all. They are deep submersible pumps that have aged out, pressure tanks that have lost their charge, or wells whose flow has slowly fallen off as mineral buildup chokes the intake. Because Boerne-area wells tend to run deep, the fix is rarely the first thing a homeowner guesses, so we diagnose the whole system before recommending anything. Often the answer is a straightforward well or pump repair rather than drilling. When flow has dropped gradually, acidizing can restore a well for a fraction of the cost of a new one. Knowing the signs of a failing pump helps you catch trouble before you lose water entirely.
Boerne and the Kendall County communities we serve
We work throughout Boerne and the places that share its ground: Cordillera Ranch, Fair Oaks Ranch, Bergheim, Kendalia, Sisterdale, Comfort, Welfare, and the ranch tracts along Cibolo Creek and the Guadalupe. Our Boerne water well service page is the place to start if you are on a well anywhere in this part of the Hill Country.
Whether you are drilling a brand-new well, equipping one, or getting an old one back on its feet, one local crew handles all of it and stands behind the work. Reach out for a free, no-pressure quote, and if cost is on your mind we are glad to walk through financing too. Boerne is our home town, and we would be glad to help with your water.