# Water wells in Llano County, Texas — how deep, and through what

> 4,143 well reports filed in Llano County since 2001. Median depth 160 ft, water struck at 33 ft, median yield 9 gpm.

## Water wells in Llano County, Texas

**4,143** well reports on file. The median well here was taken to **160 ft** and struck water at **33 ft** — against 180 ft and 80 ft across Texas.

### What you will drill through in Llano County

*Logged in Llano County, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Topsoil** 2,647 , **Granite Gravel** 639 , **Red Granite** 526 , **Red Sandy Clay** 360 , **Top Soil** 302 , **Brown Clay & Gravel** 262 |
| 25–50 ft | **Red Granite** 230 , **Gray Granite** 130 , **Red & Black Metamorphic** 110 , **Pink Granite** 59 , **Granite Gravel** 55 , **Black And Red Granite** 53 |
| 50–100 ft | **Red Granite** 197 , **Gray Granite** 75 , **Red Metamorphic** 61 , **Pink Granite** 50 , **Red & Black Metamorphic** 54 , **Black Metamorphic** 48 |
| 100–200 ft | **Red Granite** 91 , **Red Metamorphic** 68 , **Gray Granite** 54 , **Black Granite** 44 , **Black Metamorphic** 42 , **Red & Black Metamorphic** 40 |
| 200–300 ft | **Red Granite** 28 , **Gray Granite** 15 , **Water 1 Gpm** 11 , **Red Metamorphic** 12 , **Black Granite** 10 , **Grey Granite** 10 |
| 300–500 ft | **Red Sandstone** 12 , **Red Granite** 7 , **Black Granite** 4 , **Water 1 Gpm** 5 , **Brown Sandstone** 3 , **Grey Granite** 3 |
| 500–1000 ft | **Gray Sandstone** 2 , **Brown Sandstone** 2 , **Red Granite** 2 , **Gray Limestone** 2 , **Red Sandstone** 2 , **Blue Shale** 2 |

The rock column here is what drillers wrote down, layer by layer, in their own words — 5,345,462 layers across 707,856 wells. It is not a geological survey: two drillers may call the same clay by two names, and this site does not correct them.

### Who drills in Llano County

*Licensed firms in Llano County, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Virdell Drilling Inc.](/driller/virdell-drilling-inc.md) | 1,461 | 140 | 10 | 2001–2019 |
| [Walden Drilling Inc](/driller/walden-drilling-inc.md) | 818 | 160 | 5 | 2009–2026 |
| [Magill Drilling & Water Well Service, LLC](/driller/magill-drilling-water-well-service-llc.md) | 597 | 165 | 6 | 2015–2026 |
| [Apex Drilling, Inc.](/driller/apex-drilling-inc.md) | 358 | 182 | 12 | 2002–2026 |
| [Highland Drilling Inc.](/driller/highland-drilling-inc.md) | 253 | 180 | 15 | 2003–2013 |
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 137 | 23 | — | 2006–2025 |
| [Bee Cave Drilling, Inc.](/driller/bee-cave-drilling-inc.md) | 117 | 200 | 10 | 2003–2026 |
| [L & L Drilling Co.](/driller/l-l-drilling-co.md) | 100 | 285 | 8 | 2002–2026 |
| [Magill Drilling](/driller/magill-drilling.md) | 45 | 160 | 5 | 2015–2016 |
| [Western Water Wells](/driller/western-water-wells.md) | 34 | 240 | 10 | 2004–2023 |
| [Ashley Drilling & Well Service](/driller/ashley-drilling-well-service.md) | 22 | 160 | 15 | 2023–2026 |
| [Associated Drilling Inc](/driller/associated-drilling-inc.md) | 19 | 205 | 15 | 2007–2025 |
| [Magill Well Service](/driller/magill-well-service.md) | 16 | 180 | 3 | 2002–2015 |
| [Geoprojects International, Inc.](/driller/geoprojects-international-inc.md) | 16 | 18 | 175 | 2002–2005 |
| [Vortex Drilling Partners, LP](/driller/vortex-drilling-partners-lp.md) | 15 | 9 | — | 2019–2023 |
| [J and J Water Wells](/driller/j-and-j-water-wells.md) | 12 | 200 | — | 2021–2025 |
| [BoreTek LLC](/driller/boretek-llc.md) | 11 | 260 | 5 | 2024–2026 |
| [Texan Water](/driller/texan-water.md) | 11 | 200 | 15 | 2018–2024 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 11 | 25 | — | 2019–2022 |
| brian Walden drilling | 11 | — | 50 | 2011–2012 |
| [White Drilling Company, Inc.](/driller/white-drilling-company-inc.md) | 10 | 54 | — | 2020–2024 |
| [Centex Pump & Supply, Inc.](/driller/centex-pump-supply-inc.md) | 8 | 280 | 20 | 2018–2026 |
| [aquatech solutions](/driller/aquatech-solutions.md) | 7 | 220 | 15 | 2023 |
| Lewis Environmental Inc. | 7 | — | — | 2003 |
| [TOM ARNOLD DRILLING](/driller/tom-arnold-drilling.md) | 6 | 305 | 15 | 2018–2022 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 3,080 | 74.3% | 160 |
| Stock | 655 | 15.8% | 160 |
| Environmental Soil Boring | 101 | 2.4% | 10 |
| Irrigation | 98 | 2.4% | 140 |
| Monitor | 82 | 2.0% | 40 |
| Unknown | 54 | 1.3% | 200 |
| Injection | 26 | 0.6% | 40 |
| Test Well | 24 | 0.6% | 145 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 1,295 | 140 | 30 |
| 2010s | 1,689 | 145 | 36 |
| 2020s | 1,159 | 180 | 36 |

### The deepest reports on file

*Deepest reports in Llano County. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 277149 | 2012 | 800 | 80 | 50 | Domestic |
| 680805 | 2024 | 750 | 483 | 5 | Domestic |
| 608477 | 2022 | 710 | 316 | — | Domestic |
| 416598 | 2016 | 707 | 49 | — | Domestic |
| 172077 | 2009 | 705 | 320 | 16 | Domestic |
| 686373 | 2024 | 680 | 125 | — | Stock |
| 653510 | 2023 | 680 | — | — | Stock |
| 114463 | 2007 | 680 | 249 | 20 | Domestic |
| 653974 | 2023 | 660 | 400 | — | Domestic |
| 484518 | 2018 | 660 | 250 | 30 | Domestic |

Every figure on this site is a **median**, never an average. On reported yield the average is twice the median, because a handful of entries are typing errors — the largest reads 2,200,100 gallons per minute against 30,078 for the next one. Yields above 3,000 gpm (136 wells, 0.045%) and depths beyond 5,000 ft (103 wells, 0.016%) are kept in the file, marked, and left out of the medians.

### Drilling a well in Llano County?

Depth is only half the quote. What it costs depends on the rock, the casing and the pump. Tell us where and we pass the request to licensed Texas drillers.

We are nobody's agent and have no arrangement with any firm today. [What we do with this](/privacy.md).

### Counties with a comparable number of reports

- [Washington](/county/washington.md)
- [Erath](/county/erath.md)
- [Collin](/county/collin.md)
- [Harrison](/county/harrison.md)
- [DeWitt](/county/dewitt.md)
- [Hidalgo](/county/hidalgo.md)
- [Jefferson](/county/jefferson.md)
- [Smith](/county/smith.md)
- [Waller](/county/waller.md)
- [Fayette](/county/fayette.md)
- [Colorado](/county/colorado.md)
- [Potter](/county/potter.md)
- [Dallam](/county/dallam.md)

A sliding window, not a ranking. [Every county](/county.md).

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Página: https://texas-water-wells.pages.dev/county/llano/
Fonte: Texas Submitted Driller's Report Database — Texas Water Development Board, from reports filed with the Texas Department of Licensing and Regulation
Recolha: 2026-08-23