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

> 4,979 well reports filed in Galveston County since 2001. Median depth 120 ft, water struck at 70 ft, median yield 55 gpm.

## Water wells in Galveston County, Texas

**4,979** well reports on file. The median well here was taken to **120 ft** and struck water at **70 ft** — against 180 ft and 80 ft across Texas.

### What you will drill through in Galveston County

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

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Clay** 2,150 , **Sand** 855 , **Soil** 479 , **Top Soil** 375 , **Topsoil** 324 , **No Recovery** 163 |
| 25–50 ft | **Clay** 973 , **Sand** 579 , **Clay-Red** 52 , **Clay & Shale** 43 , **Clay Tan** 38 , **Red Clay** 35 |
| 50–100 ft | **Sand** 1,291 , **Clay** 449 , **Clay & Shale** 50 , **Sand Tan** 43 , **Sand-Tan-Fine Sand-Tan-.006-.008** 39 , **Sand-Tan-Fine** 37 |
| 100–200 ft | **Clay** 1,198 , **Sand** 1,143 , **Clay & Shale** 145 , **Clay And Shale** 151 , **Clay-Red** 60 , **Red Clay** 47 |
| 200–300 ft | **Clay** 265 , **Sand** 235 , **Clay & Shale** 28 , **Clay And Shale** 18 , **Gray Clay** 13 , **Clay-Red** 9 |
| 300–500 ft | **Sand** 895 , **Clay** 371 , **Clay & Shale** 52 , **Sand .006** 42 , **Clay And Shale** 36 , **Shell** 32 |
| 500–1000 ft | **Sand** 478 , **Clay** 151 , **Sand .006** 37 , **Sand-Gray-.006-.008** 25 , **Clay And Shale** 18 , **Sand-Gray-Fine Sand-Gray-.006-.008** 14 |
| 1000–5000 ft | **Sand** 1 |

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 Galveston County

*Licensed firms in Galveston County, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Environmental Service](/driller/environmental-service.md) | 951 | 410 | 65 | 2000–2026 |
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 382 | 20 | — | 2004–2025 |
| [GWR Windmills & Water Well Services, LLC](/driller/gwr-windmills-water-well-services-llc.md) | 346 | 420 | 60 | 2019–2026 |
| [Almeda Water Well Service](/driller/almeda-water-well-service.md) | 325 | 468 | 75 | 2003–2026 |
| [O'Day Drilling Company, Inc.](/driller/o-day-drilling-company-inc.md) | 307 | 451 | 60 | 2002–2026 |
| [Mathers Environmental Drilling Inc.](/driller/mathers-environmental-drilling-inc.md) | 289 | 20 | — | 2002–2026 |
| [Davison Water Well Service](/driller/davison-water-well-service.md) | 269 | 230 | 30 | 2004–2024 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 262 | 20 | — | 2013–2026 |
| [Cactus Field Services](/driller/cactus-field-services.md) | 151 | 12 | — | 2007–2010 |
| [MEZA WATER WELL SERVICE](/driller/meza-water-well-service.md) | 110 | 410 | 60 | 2015–2025 |
| [Keenan Water Well](/driller/keenan-water-well.md) | 105 | 457 | 35 | 2003–2012 |
| [Fugro Geosciences, Inc.](/driller/fugro-geosciences-inc.md) | 100 | 26 | — | 2001–2005 |
| [Tolunay-Wong Engineers,Inc](/driller/tolunay-wong-engineers-inc.md) | 98 | 20 | — | 2013–2026 |
| [Cascade Technical Services](/driller/cascade-technical-services.md) | 83 | 20 | — | 2016–2018 |
| [Advanced Drilling Systems, Inc.](/driller/advanced-drilling-systems-inc.md) | 82 | 25 | — | 2002–2025 |
| [Keenan Water Well & Septic Systems](/driller/keenan-water-well-septic-systems.md) | 63 | 378 | 40 | 2005–2015 |
| [RB Environmental LLC](/driller/rb-environmental-llc.md) | 50 | 20 | — | 2012–2013 |
| [Alpine Field Services](/driller/alpine-field-services.md) | 49 | 24 | — | 2004–2017 |
| [Fugro](/driller/fugro.md) | 36 | 19 | — | 2007–2011 |
| [H/ET](/driller/h-et.md) | 33 | 40 | — | 2007–2025 |
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 30 | 15 | — | 2008–2019 |
| Enviromental Service | 28 | 200 | 65 | 2002–2014 |
| [A-1 Water Well Drilling service](/driller/a-1-water-well-drilling-service.md) | 27 | 160 | 25 | 2003–2020 |
| [APOLLO Environmental Strategies, Inc.](/driller/apollo-environmental-strategies-inc.md) | 25 | 12 | — | 2006–2008 |
| [City Survey](/driller/city-survey.md) | 24 | 20 | — | 2009–2025 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 2,699 | 54.2% | 415 |
| Monitor | 1,456 | 29.2% | 20 |
| Environmental Soil Boring | 450 | 9.0% | 12 |
| Test Well | 87 | 1.7% | 25 |
| Injection | 84 | 1.7% | 20 |
| Other | 39 | 0.8% | 25 |
| Irrigation | 34 | 0.7% | 463 |
| Rig Supply | 34 | 0.7% | 352 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 1,913 | 160 | 75 |
| 2010s | 1,896 | 105 | 81 |
| 2020s | 1,170 | 120 | 60 |

### The deepest reports on file

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

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 520441 | 2019 | 4,580 | 105 | 100 | Domestic |
| 89462 | 2006 | 3,703 | 86 | 85 | Domestic |
| 630411 | 2023 | 1,115 | 97 | 85 | Domestic |
| 292991 | 2012 | 1,064 | 44 | 53 | Test Well |
| 268912 | 2011 | 1,024 | 88 | 76 | Test Well |
| 292997 | 2012 | 935 | 46 | 523 | Public Supply |
| 427654 | 2016 | 925 | 106 | 410 | Public Supply |
| 159220 | 2008 | 850 | 60 | 790 | Public Supply |
| 516075 | 2019 | 846 | 106 | 805 | Public Supply |
| 191205 | 2009 | 833 | — | — | Test Well |

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 Galveston 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

- [Denton](/county/denton.md)
- [Burnet](/county/burnet.md)
- [Martin](/county/martin.md)
- [Tom Green](/county/tom-green.md)
- [Howard](/county/howard.md)
- [Gillespie](/county/gillespie.md)
- [Comal](/county/comal.md)
- [Victoria](/county/victoria.md)
- [Hays](/county/hays.md)
- [Williamson](/county/williamson.md)
- [Terry](/county/terry.md)
- [Hartley](/county/hartley.md)
- [Lavaca](/county/lavaca.md)

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

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