# Well grid 40-39, Texas — McLennan — how deep, and through what

> 116 well reports in Texas state well grid 40-39, covering McLennan. Median depth 18 ft.

## Texas well grid 40-39

A 7.5-minute quadrangle of the Texas state well grid, mostly in [McLennan County](/county/mclennan.md). **116** reports, median depth **18 ft**.

### What you will drill through in grid 40-39

*Logged in state well grid 40-39, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Tan Limestone** 22 , **Gray Limestone** 11 , **Br Cl** 10 , **Tn Ls** 10 , **Concrete** 8 , **Brown Tan Clay** 8 |
| 25–50 ft | **Gray Limestone** 2 , **Gray Shale** 1 , **Yellow Clay** 1 , **Gray Clay** 1 , **Limestone, Gray** 1 , **Gr Ls** 1 |
| 50–100 ft | **Clay/Sand** 1 , **Shale Gray Sticky** 1 |
| 100–200 ft | **Clay/Shale** 1 , **Clay** 1 , **Dark Grey Limestone** 1 , **Blue/Grey Limestone** 1 , **Gray Shale** 1 |
| 200–300 ft | **Blue Sandy Shell** 1 |
| 300–500 ft | **Clay/Sand** 1 , **Clay/Shale** 1 , **Lime** 1 , **Black Shale, Gray Clay Streaks** 1 |
| 500–1000 ft | **Shale/Sand** 1 , **Sandstone** 1 , **Shale/Limestone** 1 , **Shale** 1 , **Shale/Clay** 1 , **White Limestone** 1 |
| 1000–5000 ft | **Sand/Shale** 1 , **Clay/Shale** 1 , **Shale/Sand** 1 , **Gray Sand** 1 , **Shale With Silt And Small Gravel** 1 , **Hard Limestone** 1 |

### Who drills here

*Licensed firms in state well grid 40-39, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [W.E.S.T. Drilling](/driller/w-e-s-t-drilling.md) | 27 | 18 | — | 2001–2006 |
| [Environmental Logistics Company, LLC](/driller/environmental-logistics-company-llc.md) | 11 | 15 | — | 2017–2021 |
| [Roddy Qualls Environmental Drilling](/driller/roddy-qualls-environmental-drilling.md) | 10 | 7 | — | 2019 |
| [Groundwater Monitoring Inc.](/driller/groundwater-monitoring-inc.md) | 8 | 20 | — | 2004 |
| [Geothermal Drilling inc](/driller/geothermal-drilling-inc.md) | 7 | 250 | — | 2001–2021 |
| [Wel-Mat Drilling LLP](/driller/wel-mat-drilling-llp.md) | 6 | 20 | — | 2016 |
| [Austin Geo-Logic](/driller/austin-geo-logic.md) | 6 | 10 | — | 2016 |
| [Strata Core Services, LLC](/driller/strata-core-services-llc.md) | 5 | 15 | — | 2012–2015 |
| [Total Support Services](/driller/total-support-services.md) | 5 | 15 | — | 2009 |
| [WEST Drilling](/driller/west-drilling.md) | 4 | 20 | — | 2020 |
| [Sunbelt Industrial Services](/driller/sunbelt-industrial-services.md) | 4 | — | — | 2012 |
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 3 | 25 | — | 2019 |
| [WACO DRILLING CO](/driller/waco-drilling-co.md) | 3 | 22 | — | 2013–2016 |
| [Remedial Operations Group, Inc.](/driller/remedial-operations-group-inc.md) | 3 | 10 | — | 2007 |
| [Ball Drilling Company](/driller/ball-drilling-company.md) | 2 | 300 | — | 2007–2016 |
| [SCI](/driller/sci.md) | 2 | 20 | — | 2009 |
| [Weisinger Incorporated](/driller/weisinger-incorporated.md) | 1 | 2,094 | 653 | 2024 |
| [Associated Well Services, Inc.](/driller/associated-well-services-inc.md) | 1 | 1,920 | — | 2017 |
| [Michael Tolle](/driller/michael-tolle.md) | 1 | 300 | — | 2018 |
| Waco Driling, Inc. | 1 | — | 15 | 2011 |
| [THI WATER WELL](/driller/thi-water-well.md) | 1 | 1,790 | 25 | 2010 |
| [Johnson Drilling, Inc.](/driller/johnson-drilling-inc.md) | 1 | — | — | 2010 |
| [MagnaCore Drilling & Environmental Services](/driller/magnacore-drilling-environmental-services.md) | 1 | 3 | — | 2010 |
| Richard H. Allbritton | 1 | 1,900 | 603 | 2007 |
| [WEST TEXAS WATER WELL SERVICE](/driller/west-texas-water-well-service.md) | 1 | 2,463 | 183 | 2007 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 51 | 44.0% | 20 |
| Environmental Soil Boring | 38 | 32.8% | 14 |
| Injection | 12 | 10.3% | 20 |
| Closed-Loop Geothermal | 8 | 6.9% | 300 |
| Domestic | 4 | 3.4% | 1,790 |
| Public Supply | 3 | 2.6% | 2,094 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 54 | 20 | 847 |
| 2010s | 47 | 15 | 20 |
| 2020s | 15 | 18 | 816 |

### The deepest reports on file

*Deepest reports in state well grid 40-39. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 122796 | 2007 | 2,463 | 583 | 183 | Public Supply |
| 678647 | 2024 | 2,094 | 816 | 653 | Public Supply |
| 493634 | 2017 | 1,920 | 622 | — | Domestic |
| 126025 | 2007 | 1,900 | 847 | 603 | Public Supply |
| 228889 | 2010 | 1,790 | 614 | 25 | Domestic |
| 480278 | 2018 | 300 | — | — | Closed-Loop Geothermal |
| 415095 | 2016 | 300 | — | — | Closed-Loop Geothermal |
| 568751 | 2021 | 250 | — | — | Closed-Loop Geothermal |
| 441153 | 2016 | 55 | 14 | — | Domestic |
| 2147 | 2001 | 40 | — | — | Monitor |

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 40-39?

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

- [37-53](/area/37-53.md)
- [84-38](/area/84-38.md)
- [84-55](/area/84-55.md)
- [10-53](/area/10-53.md)
- [18-09](/area/18-09.md)
- [20-15](/area/20-15.md)
- [24-43](/area/24-43.md)
- [77-34](/area/77-34.md)
- [79-63](/area/79-63.md)
- [87-31](/area/87-31.md)
- [05-06](/area/05-06.md)
- [29-07](/area/29-07.md)
- [31-31](/area/31-31.md)

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Página: https://texas-water-wells.pages.dev/area/40-39/
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