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

> 4,706 well reports filed in Williamson County since 2001. Median depth 520 ft, water struck at 340 ft, median yield 35 gpm.

## Water wells in Williamson County, Texas

**4,706** well reports on file. The median well here was taken to **520 ft** and struck water at **340 ft** — against 180 ft and 80 ft across Texas.

### What you will drill through in Williamson County

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

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Topsoil** 746 , **Top Soil** 590 , **Yellow Limestone** 449 , **Gray Limestone** 448 , **Caliche** 400 , **Blue Lime** 255 |
| 25–50 ft | **Gray Limestone** 257 , **Gray Lime** 81 , **Blue Lime** 70 , **Grey Limestone** 60 , **Brown Limestone** 52 , **Blue Limestone** 44 |
| 50–100 ft | **Gray Limestone** 267 , **Brown Limestone** 118 , **Gray Lime** 110 , **Grey Limestone** 64 , **Gray Shale** 47 , **Blue Lime** 42 |
| 100–200 ft | **Gray Limestone** 405 , **Brown Limestone** 266 , **Gray Lime** 90 , **Blue Clay** 57 , **Brown Lime** 74 , **Grey Limestone** 68 |
| 200–300 ft | **Gray Limestone** 367 , **Brown Limestone** 228 , **Gray Lime** 95 , **Blue Clay** 55 , **Blue Limestone & Shale** 70 , **Brown Lime** 69 |
| 300–500 ft | **Gray Limestone** 465 , **Sandstone** 172 , **Gray Sandstone** 236 , **Brown Limestone** 237 , **Sand** 151 , **White Limestone** 187 |
| 500–1000 ft | **Gray Limestone** 367 , **Gray Sandstone** 255 , **Sandstone** 152 , **Brown Limestone** 167 , **Grey Limestone** 161 , **Trinity Sand** 82 |
| 1000–5000 ft | **Sand** 2 , **Silty Clay** 1 , **Hensell** 2 , **Pearsall** 2 , **Hammett** 2 , **Sligo** 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 Williamson County

*Licensed firms in Williamson County, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [TOM ARNOLD DRILLING](/driller/tom-arnold-drilling.md) | 721 | 580 | 50 | 2003–2026 |
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 472 | 12 | — | 2005–2025 |
| [Associated Drilling Inc](/driller/associated-drilling-inc.md) | 440 | 630 | 30 | 2000–2026 |
| [HILL COUNTRY WATER WELL](/driller/hill-country-water-well.md) | 316 | 520 | 40 | 1984–2026 |
| [Bee Cave Drilling, Inc.](/driller/bee-cave-drilling-inc.md) | 254 | 640 | 30 | 2002–2026 |
| [Alpine water well service](/driller/alpine-water-well-service.md) | 234 | 600 | 15 | 2014–2023 |
| [Western Water Wells](/driller/western-water-wells.md) | 193 | 610 | 15 | 2002–2025 |
| [Alpine Water Well](/driller/alpine-water-well.md) | 187 | 520 | 25 | 2003–2013 |
| [Tom Lovelace Water Well Service](/driller/tom-lovelace-water-well-service.md) | 177 | 640 | 53 | 2002–2026 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 139 | 10 | — | 2012–2026 |
| [Apex Drilling, Inc.](/driller/apex-drilling-inc.md) | 101 | 545 | 42 | 2002–2023 |
| [Austin Geo-Logic](/driller/austin-geo-logic.md) | 97 | 30 | — | 2012–2026 |
| [B & B Water Well Service, Inc](/driller/b-b-water-well-service-inc.md) | 94 | 580 | 30 | 2010–2026 |
| [Tom Lovelace Water Well Serv.](/driller/tom-lovelace-water-well-serv.md) | 74 | 600 | 60 | 2003–2014 |
| [Centex Pump & Supply, Inc.](/driller/centex-pump-supply-inc.md) | 72 | 750 | 25 | 2011–2025 |
| [Highland Drilling Inc.](/driller/highland-drilling-inc.md) | 71 | 500 | 40 | 2002–2012 |
| [Vortex Drilling Partners, LP](/driller/vortex-drilling-partners-lp.md) | 56 | 22 | — | 2019–2022 |
| [Blackland Water Well Service](/driller/blackland-water-well-service.md) | 52 | 35 | 13 | 2014–2025 |
| [Sam Lovelace](/driller/sam-lovelace.md) | 47 | 37 | 30 | 2005–2014 |
| [Trinity Water Solutions](/driller/trinity-water-solutions.md) | 41 | 760 | 15 | 2022–2025 |
| [Brien Water Wells](/driller/brien-water-wells.md) | 39 | 380 | 50 | 2005–2026 |
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 36 | 20 | — | 2006–2021 |
| [J and J Water Wells](/driller/j-and-j-water-wells.md) | 35 | 510 | — | 2016–2025 |
| [Cutting Edge Core Drilling, Inc.](/driller/cutting-edge-core-drilling-inc.md) | 30 | 35 | — | 2003–2014 |
| [Western Water Wells Drilling Inc](/driller/western-water-wells-drilling-inc.md) | 26 | 575 | 40 | 2007–2020 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 2,787 | 59.2% | 553 |
| Environmental Soil Boring | 610 | 13.0% | 10 |
| Monitor | 466 | 9.9% | 30 |
| Irrigation | 386 | 8.2% | 710 |
| Test Well | 112 | 2.4% | 245 |
| Industrial | 80 | 1.7% | 850 |
| Public Supply | 77 | 1.6% | 565 |
| Stock | 73 | 1.6% | 550 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 1980s | 1 | 840 | — |
| 1990s | 2 | 603 | 257 |
| 2000s | 1,452 | 505 | 289 |
| 2010s | 1,868 | 520 | 347 |
| 2020s | 1,383 | 520 | 384 |

### The deepest reports on file

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

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 494571 | 2017 | 4,440 | 401 | 100 | Domestic |
| 467347 | 2017 | 3,300 | 258 | — | Public Supply |
| 660041 | 2023 | 1,910 | 510 | 800 | Public Supply |
| 723750 | 2026 | 1,900 | — | — | Public Supply |
| 695755 | 2025 | 1,805 | 521 | 700 | Public Supply |
| 471886 | 2017 | 1,772 | 478 | 495 | Public Supply |
| 474707 | 2018 | 1,130 | — | 180 | Irrigation |
| 643211 | 2023 | 1,120 | — | — | Domestic |
| 686978 | 2024 | 1,100 | 504 | — | Irrigation |
| 686750 | 2024 | 1,100 | 563 | — | Irrigation |

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 Williamson 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

- [Tom Green](/county/tom-green.md)
- [Howard](/county/howard.md)
- [Gillespie](/county/gillespie.md)
- [Comal](/county/comal.md)
- [Galveston](/county/galveston.md)
- [Victoria](/county/victoria.md)
- [Hays](/county/hays.md)
- [Terry](/county/terry.md)
- [Hartley](/county/hartley.md)
- [Lavaca](/county/lavaca.md)
- [Washington](/county/washington.md)
- [Erath](/county/erath.md)
- [Collin](/county/collin.md)

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

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Página: https://texas-water-wells.pages.dev/county/williamson/
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