# Well grid 18-12, Texas — Grayson — how deep, and through what

> 306 well reports in Texas state well grid 18-12, covering Grayson. Median depth 15 ft.

## Texas well grid 18-12

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Grayson County](/county/grayson.md). **306** reports, median depth **15 ft**.

### What you will drill through in grid 18-12

*Logged in state well grid 18-12, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Limestone** 19 , **Topsoil** 20 , **Concrete** 18 , **Sandy Clay** 11 , **Asphalt** 14 , **Yellow Clay** 11 |
| 25–50 ft | **Saa** 6 , **Sand** 4 , **Shale And Rock** 3 , **Dark Gray Shale** 3 , **Limestone** 2 , **Gray Shale** 2 |
| 50–100 ft | **Gray Rock** 6 , **Gray Shale** 3 , **Gray Clay** 2 , **Lt Gray Limestone** 3 , **Dark Gray Clay** 3 , **Shale** 2 |
| 100–200 ft | **Sand** 5 , **Gray Shale** 5 , **Shale** 3 , **Blue Shale** 7 , **Gray Rock** 6 , **Lime** 3 |
| 200–300 ft | **Sand** 12 , **Shale** 7 , **Gray Shale** 7 , **Shale And Sand** 7 , **Blue Shale** 6 , **Gray Clay** 2 |
| 300–500 ft | **Sand** 18 , **Shale** 11 , **Shale And Sand** 5 , **White Shale** 3 , **Gray Shale** 3 , **Shale And Rock** 2 |
| 500–1000 ft | **Shale** 2 , **Sand And Shale** 1 , **Sand** 1 |

### Who drills here

*Licensed firms in state well grid 18-12, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Sunbelt Industrial Services](/driller/sunbelt-industrial-services.md) | 47 | 11 | — | 2009–2023 |
| [Environmental Logistics Company, LLC](/driller/environmental-logistics-company-llc.md) | 46 | 15 | — | 2020–2025 |
| [WALKER HILL ENVIRONMENTAL INC](/driller/walker-hill-environmental-inc.md) | 36 | 58 | — | 2014–2023 |
| [MagnaCore Drilling & Environmental Services](/driller/magnacore-drilling-environmental-services.md) | 34 | 15 | — | 2009–2012 |
| [Roddy Qualls Environmental Drilling](/driller/roddy-qualls-environmental-drilling.md) | 28 | 6 | — | 2016–2023 |
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 24 | 5 | — | 2016–2019 |
| [A.L. Moser Drilling, Inc.](/driller/a-l-moser-drilling-inc.md) | 13 | 380 | 10 | 2003–2019 |
| [Total Support Services](/driller/total-support-services.md) | 13 | 20 | — | 2005–2011 |
| [XL Drilling, Inc.](/driller/xl-drilling-inc.md) | 13 | 9 | — | 2007–2008 |
| [FAULKNER & SON](/driller/faulkner-son.md) | 9 | 405 | 10 | 2015–2025 |
| [Zavala Drilling, CO](/driller/zavala-drilling-co.md) | 8 | 250 | — | 2012–2013 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 4 | 15 | — | 2026 |
| [Bassett Drilling](/driller/bassett-drilling.md) | 4 | 395 | 15 | 2014–2023 |
| [CoreCo USA](/driller/coreco-usa.md) | 4 | 20 | — | 2021 |
| [Strata Core Drilling Co.](/driller/strata-core-drilling-co.md) | 4 | 20 | — | 2008–2010 |
| [DIXIE DRILLING](/driller/dixie-drilling.md) | 4 | 85 | — | 2003 |
| Faulkner and Son | 3 | 375 | 15 | 2007–2013 |
| [Strata Core Services, LLC](/driller/strata-core-services-llc.md) | 3 | 8 | — | 2011–2012 |
| [Axis Drilling](/driller/axis-drilling.md) | 2 | 400 | 35 | 2020–2023 |
| [RIOMAR DRILLING INC](/driller/riomar-drilling-inc.md) | 2 | 35 | — | 2013 |
| [Erwin Water Well Drilling](/driller/erwin-water-well-drilling.md) | 1 | 420 | — | 2025 |
| [Cascade Drilling](/driller/cascade-drilling.md) | 1 | 45 | — | 2019 |
| [Subterra Environmental Services, LLC.](/driller/subterra-environmental-services-llc.md) | 1 | 25 | — | 2018 |
| RIOMAR DRILIING INC | 1 | 25 | — | 2013 |
| SOUTHERLAND WATER WELL | 1 | 250 | — | 2001 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Environmental Soil Boring | 162 | 52.9% | 9 |
| Monitor | 93 | 30.4% | 25 |
| Domestic | 31 | 10.1% | 390 |
| Closed-Loop Geothermal | 9 | 2.9% | 250 |
| Test Well | 6 | 2.0% | 15 |
| Other | 4 | 1.3% | 50 |
| Irrigation | 1 | 0.3% | 365 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 50 | 20 | 80 |
| 2010s | 110 | 18 | 23 |
| 2020s | 146 | 15 | 153 |

### The deepest reports on file

*Deepest reports in state well grid 18-12. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 528172 | 2019 | 610 | 420 | 10 | Domestic |
| 233760 | 2010 | 540 | 420 | 10 | Domestic |
| 695981 | 2025 | 505 | 400 | 8 | Domestic |
| 109599 | 2007 | 455 | 240 | 10 | Domestic |
| 683299 | 2024 | 432 | 350 | 7 | Domestic |
| 625609 | 2022 | 432 | 300 | 12 | Domestic |
| 346873 | 2013 | 430 | 360 | 7 | Domestic |
| 712538 | 2025 | 420 | — | — | Domestic |
| 605080 | 2022 | 414 | 320 | 15 | Domestic |
| 625335 | 2022 | 405 | 220 | 10 | Domestic |

Every figure here comes from a report a licensed driller filed on the day the work ended — sometimes decades ago. It describes what was found then, not what a well yields today, and it is not a statement that any well is sound, potable or still in use.

### Drilling a well near grid 18-12?

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).

This grid falls in [Grayson County](/county/grayson.md).

### Grids with a comparable number of reports

- [24-29](/area/24-29.md)
- [27-01](/area/27-01.md)
- [59-30](/area/59-30.md)
- [18-11](/area/18-11.md)
- [31-60](/area/31-60.md)
- [40-62](/area/40-62.md)
- [66-04](/area/66-04.md)
- [31-52](/area/31-52.md)
- [56-23](/area/56-23.md)
- [58-62](/area/58-62.md)
- [62-49](/area/62-49.md)
- [38-06](/area/38-06.md)
- [67-54](/area/67-54.md)

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Página: https://texas-water-wells.pages.dev/area/18-12/
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