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

> 3,279 well reports filed in Grimes County since 2001. Median depth 280 ft, water struck at 90 ft, median yield 40 gpm.

## Water wells in Grimes County, Texas

**3,279** well reports on file. The median well here was taken to **280 ft** and struck water at **90 ft** — against 180 ft and 80 ft across Texas.

### What you will drill through in Grimes County

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

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Clay** 1,496 , **Sand** 511 , **Top Soil** 123 , **Topsoil** 123 , **Shale** 109 , **Sand, Clay** 86 |
| 25–50 ft | **Clay** 443 , **Sand** 426 , **Clay, Sand** 106 , **Sand, Clay** 70 , **Shale** 65 , **Blue Clay** 51 |
| 50–100 ft | **Clay** 710 , **Sand** 670 , **Shale** 116 , **Sand, Clay** 106 , **Rock** 95 , **Blue Clay** 66 |
| 100–200 ft | **Sand** 1,184 , **Clay** 1,053 , **Shale** 261 , **Rock** 207 , **Clay, Sand** 118 , **Blue Clay** 69 |
| 200–300 ft | **Sand** 1,054 , **Clay** 623 , **Shale** 246 , **Rock** 134 , **Hard Shale** 50 , **Clay, Sand** 70 |
| 300–500 ft | **Sand** 815 , **Clay** 306 , **Shale** 152 , **Rock** 68 , **Blue Clay** 29 , **Hard Shale** 29 |
| 500–1000 ft | **Sand** 87 , **Clay** 38 , **Shale** 22 , **Rock** 9 , **Blue Shale** 2 , **Gray Clay** 5 |
| 1000–5000 ft | **Sand** 3 , **Clay** 2 , **Blue Shale** 1 , **Sand & Clay** 1 , **Shale** 2 , **Clay/Sand** 2 |

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 Grimes County

*Licensed firms in Grimes County, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [S & K Drilling Co](/driller/s-k-drilling-co.md) | 496 | 312 | 24 | 2002–2017 |
| [Ricky Bonds Water Wells](/driller/ricky-bonds-water-wells.md) | 487 | 265 | 45 | 2004–2026 |
| [Main Stream Environmental](/driller/main-stream-environmental.md) | 176 | 335 | 40 | 2016–2026 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 129 | 33 | — | 2017–2026 |
| [A&I Water Well Services](/driller/a-i-water-well-services.md) | 112 | 300 | 25 | 2013–2025 |
| [HURST WATER WELLS](/driller/hurst-water-wells.md) | 100 | 240 | 30 | 2002–2026 |
| [Ballard Water Well Co. LLC](/driller/ballard-water-well-co-llc.md) | 93 | 280 | 40 | 2001–2026 |
| [W5 Water Well Service, Inc.](/driller/w5-water-well-service-inc.md) | 90 | 282 | 28 | 2009–2011 |
| [J&S WATER WELLS](/driller/j-s-water-wells.md) | 83 | 470 | 130 | 2003–2024 |
| [B&R WATER WELL DRILLING, LLC](/driller/b-r-water-well-drilling-llc.md) | 79 | 334 | 45 | 2004–2026 |
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 78 | 30 | — | 2008–2026 |
| [Holly Water Wells](/driller/holly-water-wells.md) | 73 | 365 | 20 | 2003–2026 |
| [B&R Water Well Service, LLC](/driller/b-r-water-well-service-llc.md) | 73 | 295 | 45 | 2012–2020 |
| [J&S Drilling, LLC](/driller/j-s-drilling-llc.md) | 65 | 350 | 25 | 2015–2026 |
| [AQUA STAR LLC](/driller/aqua-star-llc.md) | 63 | 250 | 40 | 2011–2026 |
| [NORTHWEST WATER WELLS](/driller/northwest-water-wells.md) | 59 | 255 | 45 | 2001–2010 |
| [M&M Water Well, LLC](/driller/m-m-water-well-llc.md) | 50 | 342 | 24 | 2013–2026 |
| [Betancourt Water Well Drilling](/driller/betancourt-water-well-drilling.md) | 50 | 290 | 40 | 2006–2020 |
| [LTW Services, LP](/driller/ltw-services-lp.md) | 47 | 440 | 80 | 2011–2017 |
| [TIM FRANKS WATER WELL SERVICE](/driller/tim-franks-water-well-service.md) | 37 | 223 | 30 | 2004–2025 |
| [Lewis Environmental Drilling, Inc.](/driller/lewis-environmental-drilling-inc.md) | 36 | 55 | — | 2010 |
| [WALKER HILL ENVIRONMENTAL INC](/driller/walker-hill-environmental-inc.md) | 35 | 94 | — | 2012–2023 |
| [Kenco Water Well Service](/driller/kenco-water-well-service.md) | 34 | 236 | 60 | 1999–2008 |
| [HURST WATER WELL](/driller/hurst-water-well.md) | 33 | 300 | 45 | 2007–2012 |
| [LONE STAR WELL & SEPTIC](/driller/lone-star-well-septic.md) | 26 | 300 | 35 | 2013–2017 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 2,469 | 75.3% | 290 |
| Monitor | 313 | 9.5% | 35 |
| Stock | 105 | 3.2% | 335 |
| Industrial | 92 | 2.8% | 405 |
| Rig Supply | 82 | 2.5% | 330 |
| Environmental Soil Boring | 78 | 2.4% | 10 |
| Irrigation | 68 | 2.1% | 380 |
| Test Well | 23 | 0.7% | 17 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 1990s | 3 | 210 | 32 |
| 2000s | 915 | 290 | 92 |
| 2010s | 1,357 | 280 | 90 |
| 2020s | 1,004 | 260 | 93 |

### The deepest reports on file

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

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 242321 | 2008 | 2,116 | 81 | 94 | Test Well |
| 691744 | 2025 | 1,500 | 180 | 201 | Public Supply |
| 481569 | 2018 | 1,400 | 293 | 1,511 | Public Supply |
| 325789 | 2013 | 1,223 | 100 | 25 | Domestic |
| 506676 | 2019 | 1,210 | 60 | 140 | Rig Supply |
| 275557 | 2012 | 1,200 | 17 | 500 | Irrigation |
| 5045 | 2002 | 1,020 | 272 | 150 | Public Supply |
| 567018 | 2020 | 930 | 180 | 200 | Irrigation |
| 47369 | 2003 | 920 | 137 | 415 | Irrigation |
| 201143 | 2005 | 890 | 140 | 500 | 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 Grimes 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

- [Webb](/county/webb.md)
- [Sherman](/county/sherman.md)
- [Rusk](/county/rusk.md)
- [Johnson](/county/johnson.md)
- [Bell](/county/bell.md)
- [Montague](/county/montague.md)
- [Liberty](/county/liberty.md)
- [Jim Wells](/county/jim-wells.md)
- [Matagorda](/county/matagorda.md)
- [Andrews](/county/andrews.md)
- [Hockley](/county/hockley.md)
- [San Patricio](/county/san-patricio.md)
- [Reagan](/county/reagan.md)

A sliding window, not a ranking. [Every county](/county.md).

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Página: https://texas-water-wells.pages.dev/county/grimes/
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