# Well grid 68-20, Texas — Bexar, Starr — how deep, and through what

> 310 well reports in Texas state well grid 68-20, covering Bexar, Starr, Comal. Median depth 480 ft.

## Texas well grid 68-20

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Bexar County](/county/bexar.md) and [Starr County](/county/starr.md). **310** reports, median depth **480 ft**.

### What you will drill through in grid 68-20

*Logged in state well grid 68-20, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Topsoil** 28 , **Tan Lime** 22 , **Top Soil** 20 , **Caliche** 17 , **Tan Limestone** 13 , **Limestone** 9 |
| 25–50 ft | **Tan Limestone** 5 , **Grey Limestone** 4 , **Gray Limestone.** 3 , **White Rock** 3 , **Tan Rock** 3 , **Limestone** 3 |
| 50–100 ft | **Tan Limestone** 10 , **Lt.Gray Lime Few Shale St.** 7 , **Grey Limestone** 6 , **Tan Lime** 5 , **Med Hard Yellow Rock** 4 , **Tan Rock** 4 |
| 100–200 ft | **Tan Lime** 13 , **Tan Limestone** 8 , **Tan Rock** 7 , **Gray Lime** 4 , **Gray Limestone** 6 , **Lt.Gray Lime** 6 |
| 200–300 ft | **Tan Lime** 13 , **Tan Limestone** 12 , **Lt.Gray Lime** 10 , **Gray Limestone** 6 , **Tan Rock** 7 , **Gray Lime** 6 |
| 300–500 ft | **Lt.Gray Lime** 18 , **Bexar Shale** 18 , **Tan Lime** 11 , **Tan Limestone** 11 , **Lt.Gray Lime Few Intermitten Frac.** 12 , **Gray Limestone** 6 |
| 500–1000 ft | **Td** 12 , **Cow Creek** 6 , **Gray Lime** 6 , **Tan Limestone** 4 , **Bexar Shale** 5 , **Lt.Gray Lime** 5 |

### Who drills here

*Licensed firms in state well grid 68-20, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Geoprojects International, Inc.](/driller/geoprojects-international-inc.md) | 68 | 311 | 55 | 2002–2024 |
| [TR Drilling & Service LLC](/driller/tr-drilling-service-llc.md) | 33 | 560 | 20 | 2003–2026 |
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 33 | 35 | — | 2009–2016 |
| [SCI](/driller/sci.md) | 22 | — | — | 2010 |
| [Martinez Water Well](/driller/martinez-water-well.md) | 20 | 520 | 20 | 2005–2013 |
| [Spring Branch Water Well Service](/driller/spring-branch-water-well-service.md) | 15 | 660 | 10 | 2015–2025 |
| [Puddle Jumper Well Company](/driller/puddle-jumper-well-company.md) | 13 | 550 | 15 | 2004–2023 |
| [H. W. Schwope & Sons Inc.](/driller/h-w-schwope-sons-inc.md) | 10 | 575 | 15 | 2004–2015 |
| [Talon/LPE](/driller/talon-lpe.md) | 9 | 145 | — | 2022 |
| [White Drilling Company, Inc.](/driller/white-drilling-company-inc.md) | 8 | 75 | — | 2006–2008 |
| [Davenport Drilling & Pump Service](/driller/davenport-drilling-pump-service.md) | 7 | 872 | 150 | 2003–2020 |
| [H & H Drilling](/driller/h-h-drilling.md) | 7 | 560 | 10 | 2006–2020 |
| [BoMax Industries, Inc.](/driller/bomax-industries-inc.md) | 7 | 700 | 12 | 2003–2013 |
| [Vortex Drilling Partners, LP](/driller/vortex-drilling-partners-lp.md) | 5 | 8 | — | 2022–2023 |
| Directed Technologies Drilling | 5 | — | — | 2008 |
| [American Water Well Services Inc.](/driller/american-water-well-services-inc.md) | 4 | 710 | 50 | 2022–2025 |
| Geoprojects Int'l | 4 | 300 | — | 2017–2018 |
| [Armadigger, Inc.](/driller/armadigger-inc.md) | 4 | 560 | 20 | 1996–2009 |
| Louis Bergmann and Sons | 4 | 480 | 55 | 2003 |
| [TR Drilling and Service](/driller/tr-drilling-and-service.md) | 3 | 500 | — | 2024–2025 |
| [Zavala Drilling, CO](/driller/zavala-drilling-co.md) | 3 | 250 | — | 2012–2023 |
| [Kutscher Drilling](/driller/kutscher-drilling.md) | 3 | 490 | 10 | 2017–2019 |
| [Pipe Creek Water Well, Inc.](/driller/pipe-creek-water-well-inc.md) | 2 | 500 | 40 | 2005–2009 |
| Hood Drilling | 2 | 600 | 15 | 2002–2003 |
| [D K Drilling and Water Systems](/driller/d-k-drilling-and-water-systems.md) | 1 | 510 | 30 | 2025 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 128 | 41.3% | 580 |
| Monitor | 82 | 26.5% | 159 |
| Environmental Soil Boring | 62 | 20.0% | 22 |
| Public Supply | 11 | 3.5% | 579 |
| Irrigation | 6 | 1.9% | 710 |
| Industrial | 6 | 1.9% | 538 |
| Closed-Loop Geothermal | 5 | 1.6% | 250 |
| Injection | 5 | 1.6% | — |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 1990s | 1 | — | 325 |
| 2000s | 121 | 425 | 259 |
| 2010s | 129 | 500 | 300 |
| 2020s | 59 | 520 | 270 |

### The deepest reports on file

*Deepest reports in state well grid 68-20. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 1656 | 2001 | 1,022 | 189 | 314 | Public Supply |
| 156469 | 2003 | 1,000 | 214 | 1,000 | Public Supply |
| 94244 | 2006 | 980 | 650 | 7 | Domestic |
| 332292 | 2006 | 940 | 360 | 15 | Domestic |
| 153481 | 2008 | 920 | 510 | 10 | Domestic |
| 42818 | 2000 | 910 | 255 | 350 | Public Supply |
| 194361 | 2009 | 900 | 355 | 15 | Domestic |
| 340801 | 2013 | 872 | 440 | 150 | Public Supply |
| 186334 | 2009 | 865 | — | 30 | Domestic |
| 383225 | 2014 | 860 | 130 | 35 | 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 68-20?

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 [Bexar County](/county/bexar.md), [Starr County](/county/starr.md), [Comal County](/county/comal.md), [Bandera County](/county/bandera.md).

### Grids with a comparable number of reports

- [67-24](/area/67-24.md)
- [02-63](/area/02-63.md)
- [39-39](/area/39-39.md)
- [56-48](/area/56-48.md)
- [79-21](/area/79-21.md)
- [23-27](/area/23-27.md)
- [37-12](/area/37-12.md)
- [32-44](/area/32-44.md)
- [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)

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Página: https://texas-water-wells.pages.dev/area/68-20/
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