# Well grid 40-31, Texas — McLennan — how deep, and through what

> 556 well reports in Texas state well grid 40-31, covering McLennan. Median depth 19 ft.

## Texas well grid 40-31

A 7.5-minute quadrangle of the Texas state well grid, mostly in [McLennan County](/county/mclennan.md). **556** reports, median depth **19 ft**.

### What you will drill through in grid 40-31

*Logged in state well grid 40-31, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **No Soil Logging Information, Point Was Only Used As A Tempor** 57 , **Asphalt** 33 , **Limestone** 24 , **Brown Clay** 24 , **No Recovery** 7 , **Concrete** 22 |
| 25–50 ft | **Tan Limestone** 3 , **No Recovery** 3 , **(Cl) Brown And Tan Sandy Clay; Soft; Wet; No Odor** 2 , **(Cl) Tan And Grey Sandy Clay With Gravel; Soft; Wet; No Odor** 2 , **Limestone - Gray, Weatered** 2 , **Gray Limestone** 2 |
| 50–100 ft | **Small Gravel/Grey Clay** 1 , **Small Gravel/Course Sand** 1 , **Limestone** 1 |
| 100–200 ft | **Grey Shale** 1 , **Grey Clay** 1 |
| 200–300 ft | **Gray Clay, Shale, & Limestone** 1 , **Shale With Rock Streaks** 1 |
| 300–500 ft | **Grey Clay And Shale** 1 , **Gray Clay With Streaks Of Sand, Clay & Sand** 1 , **Grey Shale** 1 , **Grey Shale & Clay** 1 |
| 500–1000 ft | **Grey Clay/Shale** 1 , **Hard Limestone** 1 , **Grey Clay, Shale, And Limestone** 1 , **Gray Clay, Shale, & Limestone** 1 , **Lime Stone/Grey Shale** 1 , **Lime Stone/Lignite** 1 |
| 1000–5000 ft | **Sand With Streaks Of Sandy Clay** 1 , **Yellow Clay And Shale** 1 , **Blue Sandy Clay & Sand** 1 , **Red Clay** 1 , **Sand & Blue Sandy Clay** 1 , **Yellow Clay** 1 |

### Who drills here

*Licensed firms in state well grid 40-31, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 70 | 15 | — | 2006–2018 |
| [Cascade Technical Services](/driller/cascade-technical-services.md) | 57 | 18 | — | 2017–2018 |
| [WEST Drilling](/driller/west-drilling.md) | 50 | 20 | — | 2016–2023 |
| [Environmental Logistics Company, LLC](/driller/environmental-logistics-company-llc.md) | 44 | 12 | — | 2017–2026 |
| [Sunbelt Industrial Services](/driller/sunbelt-industrial-services.md) | 31 | 24 | — | 2010–2023 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 29 | 27 | — | 2019–2026 |
| [Subterra Environmental Services, LLC.](/driller/subterra-environmental-services-llc.md) | 27 | 10 | — | 2022 |
| [Vortex Drilling Partners, LP](/driller/vortex-drilling-partners-lp.md) | 20 | 25 | — | 2020–2022 |
| [Groundwater Monitoring Inc.](/driller/groundwater-monitoring-inc.md) | 20 | 15 | — | 2004–2007 |
| [Total Support Services](/driller/total-support-services.md) | 17 | 17 | — | 2003–2015 |
| [Strata Core Services, LLC](/driller/strata-core-services-llc.md) | 14 | 19 | — | 2011–2016 |
| [W.E.S.T. Drilling](/driller/w-e-s-t-drilling.md) | 14 | 25 | — | 2005–2015 |
| [Roddy Qualls Environmental Drilling](/driller/roddy-qualls-environmental-drilling.md) | 13 | 20 | — | 2018–2022 |
| [Kleinfelder](/driller/kleinfelder.md) | 13 | 15 | — | 2012 |
| [Talon/LPE](/driller/talon-lpe.md) | 10 | 15 | — | 2020 |
| [Eagle Remediation](/driller/eagle-remediation.md) | 9 | 8 | — | 2021–2023 |
| [RIOMAR DRILLING INC](/driller/riomar-drilling-inc.md) | 9 | 11 | — | 2015–2017 |
| [Savage Excavation](/driller/savage-excavation.md) | 7 | 25 | — | 2024–2026 |
| [Pacific West](/driller/pacific-west.md) | 6 | 18 | — | 2024 |
| [Eagle Remediation & Demolition](/driller/eagle-remediation-demolition.md) | 6 | 35 | — | 2023 |
| [MagnaCore Drilling & Environmental Services](/driller/magnacore-drilling-environmental-services.md) | 6 | — | — | 2012 |
| [Strata Core Drilling Co.](/driller/strata-core-drilling-co.md) | 6 | 20 | — | 2010 |
| [DIXIE DRILLING](/driller/dixie-drilling.md) | 6 | 15 | — | 2005 |
| Richard Cheek | 6 | 11 | — | 2002 |
| [WACO DRILLING CO](/driller/waco-drilling-co.md) | 5 | 29 | — | 2020–2025 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 257 | 46.2% | 25 |
| Environmental Soil Boring | 202 | 36.3% | 10 |
| Injection | 66 | 11.9% | 18 |
| Other | 10 | 1.8% | 15 |
| Test Well | 7 | 1.3% | 20 |
| Domestic | 7 | 1.3% | 60 |
| Closed-Loop Geothermal | 3 | 0.5% | 300 |
| Irrigation | 2 | 0.4% | 80 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 101 | 15 | 20 |
| 2010s | 261 | 16 | 18 |
| 2020s | 194 | 20 | 19 |

### The deepest reports on file

*Deepest reports in state well grid 40-31. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 493540 | 2017 | 2,040 | 830 | 20 | Domestic |
| 266603 | 2011 | 2,025 | 842 | 370 | Public Supply |
| 381294 | 2014 | 1,400 | 640 | — | Domestic |
| 346999 | 2013 | 300 | — | — | Closed-Loop Geothermal |
| 531864 | 2020 | 80 | 15 | 16 | Irrigation |
| 441341 | 2017 | 80 | 20 | — | Domestic |
| 255569 | 2011 | 60 | — | — | Monitor |
| 182138 | 2009 | 60 | 15 | 20 | Domestic |
| 276617 | 2010 | 58 | 20 | 15 | Domestic |
| 558547 | 2020 | 55 | 17 | — | 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 40-31?

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 [McLennan County](/county/mclennan.md).

### Grids with a comparable number of reports

- [60-38](/area/60-38.md)
- [65-19](/area/65-19.md)
- [88-51](/area/88-51.md)
- [06-49](/area/06-49.md)
- [19-43](/area/19-43.md)
- [19-44](/area/19-44.md)
- [07-02](/area/07-02.md)
- [35-34](/area/35-34.md)
- [62-58](/area/62-58.md)
- [19-63](/area/19-63.md)
- [26-40](/area/26-40.md)
- [65-11](/area/65-11.md)
- [57-64](/area/57-64.md)

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Página: https://texas-water-wells.pages.dev/area/40-31/
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