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

> 24,830 well reports filed in Bexar County since 2001. Median depth 20 ft, water struck at 50 ft, median yield 25 gpm.

## Water wells in Bexar County, Texas

**24,830** well reports on file. The median well here was taken to **20 ft** and struck water at **50 ft** — against 180 ft and 80 ft across Texas.

### What you will drill through in Bexar County

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

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Concrete** 991 , **Asphalt** 869 , **Top Soil** 537 , **Clay** 441 , **Topsoil** 405 , **Navarro** 273 |
| 25–50 ft | **Navarro** 107 , **Sand** 65 , **Rock** 51 , **Shale** 51 , **Clay** 49 , **Navarro.** 39 |
| 50–100 ft | **Shale** 160 , **Rock** 142 , **Sand** 137 , **Grey Shale** 84 , **Gray Clay** 59 , **Gray Limestone** 36 |
| 100–200 ft | **Rock** 207 , **Shale** 216 , **Sand** 229 , **Sandy Shale** 78 , **Grey Shale** 73 , **Gray Clay** 47 |
| 200–300 ft | **Rock** 158 , **Shale** 161 , **Sand** 179 , **Sandy Shale** 61 , **Tan Limestone** 64 , **Tan Lime** 54 |
| 300–500 ft | **Rock** 105 , **Sand** 126 , **Shale** 113 , **Lt.Gray Lime** 63 , **Grey Limestone** 75 , **Tan Lime** 59 |
| 500–1000 ft | **Bexar Shale** 69 , **Sand** 33 , **Cow Creek** 62 , **Shale** 37 , **Grey Rock** 43 , **Gray Limestone** 31 |
| 1000–5000 ft | **Sand** 13 , **Shale** 9 , **Cow Creek** 12 , **Pine Island** 10 , **Sandy Clay** 5 , **Sandy Gray Shale** 3 |

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 Bexar County

*Licensed firms in Bexar County, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 14,555 | 15 | — | 2005–2025 |
| [Vortex Drilling Partners, LP](/driller/vortex-drilling-partners-lp.md) | 2,727 | 15 | — | 1998–2023 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 730 | 15 | — | 2011–2026 |
| [TR Drilling & Service LLC](/driller/tr-drilling-service-llc.md) | 399 | 560 | 15 | 2003–2026 |
| [Pacific West Environmental and Infrastructure](/driller/pacific-west-environmental-and-infrastructure.md) | 371 | 10 | — | 2024–2026 |
| [Alamo1 Drilling](/driller/alamo1-drilling.md) | 295 | 15 | — | 2025–2026 |
| [Alamo Environmental dba Vortex Drilling](/driller/alamo-environmental-dba-vortex-drilling.md) | 284 | 10 | — | 2023–2025 |
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 257 | 15 | — | 2004–2022 |
| [Right Drill, LLC.](/driller/right-drill-llc.md) | 195 | 25 | — | 2023–2025 |
| [Geoprojects International, Inc.](/driller/geoprojects-international-inc.md) | 185 | 59 | 40 | 2002–2024 |
| [Gainco, Inc.](/driller/gainco-inc.md) | 159 | 15 | — | 2009–2022 |
| [Alliance Maintenance and Services](/driller/alliance-maintenance-and-services.md) | 158 | 30 | — | 2015 |
| [Sarris drilling](/driller/sarris-drilling.md) | 150 | 300 | 12 | 2015–2026 |
| [Total Support Services](/driller/total-support-services.md) | 147 | 25 | — | 2001–2020 |
| [Talon/LPE](/driller/talon-lpe.md) | 146 | 18 | 35 | 2015–2023 |
| [Armadigger, Inc.](/driller/armadigger-inc.md) | 139 | 600 | 25 | 1996–2010 |
| [Roddy Qualls Environmental Drilling](/driller/roddy-qualls-environmental-drilling.md) | 116 | 10 | — | 2014–2022 |
| [H. W. Schwope & Sons Inc.](/driller/h-w-schwope-sons-inc.md) | 113 | 600 | 25 | 1985–2026 |
| [MagnaCore Drilling & Environmental Services](/driller/magnacore-drilling-environmental-services.md) | 110 | 15 | — | 2002–2019 |
| [ALPHA & OMEGA DRILLING SERVICES, INC.](/driller/alpha-omega-drilling-services-inc.md) | 110 | 11 | — | 2005–2014 |
| [Alsay Incorporated](/driller/alsay-incorporated.md) | 107 | 520 | 60 | 2002–2025 |
| [H & H Drilling](/driller/h-h-drilling.md) | 106 | 480 | 10 | 2001–2026 |
| [Davenport Drilling & Pump Service](/driller/davenport-drilling-pump-service.md) | 106 | 900 | 30 | 2001–2021 |
| [Eagle Remediation](/driller/eagle-remediation.md) | 103 | 15 | — | 2021–2023 |
| [Vironex Inc.](/driller/vironex-inc.md) | 99 | 30 | — | 2012 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Environmental Soil Boring | 15,939 | 64.2% | 12 |
| Monitor | 5,328 | 21.5% | 28 |
| Domestic | 2,147 | 8.6% | 500 |
| Injection | 586 | 2.4% | 30 |
| Irrigation | 270 | 1.1% | 350 |
| Public Supply | 137 | 0.6% | 880 |
| Test Well | 134 | 0.5% | 30 |
| Other | 90 | 0.4% | 10 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 1980s | 1 | 475 | 265 |
| 1990s | 16 | 460 | 280 |
| 2000s | 5,668 | 20 | 140 |
| 2010s | 13,547 | 20 | 24 |
| 2020s | 5,598 | 18 | 110 |

### The deepest reports on file

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

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 145796 | 2007 | 2,700 | — | — | Test Well |
| 140297 | 2007 | 2,460 | — | — | Monitor |
| 129150 | 2007 | 2,331 | 103 | 1,500 | Public Supply |
| 139120 | 2004 | 2,205 | 300 | 300 | Monitor |
| 604154 | 2022 | 2,160 | 0 | — | Irrigation |
| 186376 | 2009 | 2,000 | — | 830 | Public Supply |
| 694849 | 2025 | 1,994 | 51 | 2,200 | Monitor |
| 546473 | 2020 | 1,987 | 277 | 1,007 | Public Supply |
| 288431 | 2012 | 1,932 | — | 75 | Public Supply |
| 318440 | 2013 | 1,920 | 139 | 1,005 | Public Supply |

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 Bexar 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

- [Harris](/county/harris.md)
- [Dallas](/county/dallas.md)
- [Tarrant](/county/tarrant.md)
- [Parker](/county/parker.md)
- [Midland](/county/midland.md)
- [Montgomery](/county/montgomery.md)
- [Gaines](/county/gaines.md)
- [Brazoria](/county/brazoria.md)
- [Travis](/county/travis.md)
- [Lubbock](/county/lubbock.md)
- [Ector](/county/ector.md)
- [Fort Bend](/county/fort-bend.md)
- [Wise](/county/wise.md)

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

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