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

> 24,764 well reports filed in Dallas County since 2001. Median depth 20 ft, water struck at 16 ft, median yield 24 gpm.

## Water wells in Dallas County, Texas

**24,764** well reports on file. The median well here was taken to **20 ft** and struck water at **16 ft** — against 180 ft and 80 ft across Texas.

### What you will drill through in Dallas County

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

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Concrete** 2,627 , **Brown Clay** 1,566 , **Dark Brown Clay** 1,197 , **Clay** 934 , **Tan Clay** 957 , **Tan Limestone** 772 |
| 25–50 ft | **Gray Shale** 210 , **Shale** 158 , **Gray Limestone** 85 , **Sand** 71 , **Tan Sand** 68 , **Grey Shale** 61 |
| 50–100 ft | **Shale** 64 , **Gray Shale** 58 , **Sand** 13 , **Gravel** 15 , **Blue Shale** 12 , **Grey Shale** 12 |
| 100–200 ft | **Gray Shale** 30 , **Sand** 23 , **Blue Shale** 11 , **Shale** 15 , **Sandy Shale** 10 , **Lime** 8 |
| 200–300 ft | **Sand** 32 , **Gray Shale** 22 , **Shale** 18 , **Sandy Shale** 9 , **Sand & Blue Shale** 3 , **Blue Shale** 4 |
| 300–500 ft | **Sand** 21 , **Gray Shale** 17 , **Shale** 8 , **Sandy Shale** 8 , **Blue Shale** 5 , **Sandy Gray Shale** 4 |
| 500–1000 ft | **Sand** 37 , **Shale** 22 , **Gray Shale** 16 , **Sandy Shale** 11 , **Gray Shale/Sand** 10 , **Lime** 7 |
| 1000–5000 ft | **Sand** 15 , **Shale** 9 , **Gray Shale** 5 , **Sandy Shale** 7 , **Limestone** 5 , **Sand And 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 Dallas County

*Licensed firms in Dallas County, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Sunbelt Industrial Services](/driller/sunbelt-industrial-services.md) | 3,218 | 20 | — | 2006–2026 |
| [MagnaCore Drilling & Environmental Services](/driller/magnacore-drilling-environmental-services.md) | 2,777 | 15 | — | 2002–2019 |
| [WEST Drilling](/driller/west-drilling.md) | 2,481 | 20 | — | 2001–2026 |
| [Environmental Logistics Company, LLC](/driller/environmental-logistics-company-llc.md) | 1,879 | 17 | — | 2016–2026 |
| [W.E.S.T. Drilling](/driller/w-e-s-t-drilling.md) | 1,876 | 24 | — | 2001–2015 |
| [Roddy Qualls Environmental Drilling](/driller/roddy-qualls-environmental-drilling.md) | 1,263 | 20 | — | 2013–2023 |
| [Groundwater Monitoring Inc.](/driller/groundwater-monitoring-inc.md) | 1,124 | 20 | — | 2004–2008 |
| [Total Support Services](/driller/total-support-services.md) | 834 | 20 | — | 2001–2019 |
| [Strata Core Services, LLC](/driller/strata-core-services-llc.md) | 807 | 20 | — | 2011–2019 |
| [SCI](/driller/sci.md) | 786 | 23 | — | 2003–2022 |
| [Strata Core Drilling Co.](/driller/strata-core-drilling-co.md) | 512 | 22 | — | 2008–2011 |
| [RIOMAR DRILLING INC](/driller/riomar-drilling-inc.md) | 490 | 15 | — | 2012–2020 |
| [Texplor of Dallas, Inc.](/driller/texplor-of-dallas-inc.md) | 442 | 23 | — | 2002–2025 |
| [DIXIE DRILLING](/driller/dixie-drilling.md) | 435 | 20 | — | 2002–2005 |
| [Subterra Environmental Services, LLC.](/driller/subterra-environmental-services-llc.md) | 427 | 20 | — | 2016–2022 |
| [Wel-Mat Drilling LLP](/driller/wel-mat-drilling-llp.md) | 413 | 30 | — | 2002–2018 |
| [RIOMAR ENVIRONMENTAL DRILLING](/driller/riomar-environmental-drilling.md) | 370 | 10 | — | 2010–2012 |
| [Eagle Remediation](/driller/eagle-remediation.md) | 238 | 25 | — | 2020–2024 |
| [GM Enterprises](/driller/gm-enterprises.md) | 237 | 20 | — | 2002–2024 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 219 | 20 | — | 2018–2026 |
| [CM2, Inc.](/driller/cm2-inc.md) | 169 | 20 | — | 2001–2004 |
| [Savage Excavation](/driller/savage-excavation.md) | 165 | 20 | — | 2024–2026 |
| [Johnson Drilling, Inc.](/driller/johnson-drilling-inc.md) | 161 | 400 | — | 2003–2026 |
| [R.L.Wagstaff Co.](/driller/r-l-wagstaff-co.md) | 160 | 48 | 20 | 2001–2026 |
| [ESN-South](/driller/esn-south.md) | 133 | 18 | — | 2003–2009 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 14,362 | 58.0% | 25 |
| Environmental Soil Boring | 8,829 | 35.7% | 13 |
| Injection | 346 | 1.4% | 25 |
| Test Well | 341 | 1.4% | 20 |
| Closed-Loop Geothermal | 324 | 1.3% | 300 |
| Irrigation | 201 | 0.8% | 320 |
| Domestic | 169 | 0.7% | 52 |
| Other | 137 | 0.6% | 25 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 1990s | 1 | — | 27 |
| 2000s | 9,363 | 20 | 17 |
| 2010s | 9,918 | 20 | 16 |
| 2020s | 5,482 | 20 | 15 |

### The deepest reports on file

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

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 659688 | 2023 | 3,035 | — | — | Monitor |
| 549273 | 2020 | 3,002 | — | — | Irrigation |
| 255992 | 2011 | 2,440 | 656 | 595 | Irrigation |
| 669777 | 2023 | 2,420 | 727 | — | Irrigation |
| 251662 | 2011 | 2,034 | 682 | 180 | Irrigation |
| 395825 | 2015 | 1,873 | 605 | 115 | Stock |
| 722460 | 2026 | 1,800 | 199 | 250 | Industrial |
| 628832 | 2022 | 1,790 | — | — | Irrigation |
| 667391 | 2024 | 1,780 | 717 | 300 | Stock |
| 297114 | 2011 | 1,740 | 750 | 38 | 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 Dallas 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)
- [Bexar](/county/bexar.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/dallas/
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