# Well grid 18-43, Texas — Collin — how deep, and through what

> 110 well reports in Texas state well grid 18-43, covering Collin. Median depth 907 ft.

## Texas well grid 18-43

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Collin County](/county/collin.md). **110** reports, median depth **907 ft**.

### What you will drill through in grid 18-43

*Logged in state well grid 18-43, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Yellow Clay** 29 , **Topsoil** 25 , **Black Topsoil** 21 , **Top Soil** 18 , **Gray Shale** 12 , **Shale** 9 |
| 25–50 ft | **Gray Shale** 7 , **Austin Chalk** 7 , **Brown Shale/ Gray Shale** 2 , **Sand** 1 , **Shale** 1 , **Gray Tan Limestone Chalk** 1 |
| 50–100 ft | **Gray Shale** 21 , **Gray Shale With Lime Stringers** 2 , **Gray Sandstone, Gray Clay** 1 , **Gray Clay** 2 , **Gray And Brown Shale** 1 , **Dark Green Clay, Sandstone, Silty Sand** 1 |
| 100–200 ft | **Gray Shale** 19 , **Black Clay** 1 , **Rock And Black Clay** 1 , **Shale** 2 , **Dark Green Shale, Clay** 1 , **Gray Sandy Shale, Gray Clay** 1 |
| 200–300 ft | **Gray Shale** 5 , **Sand** 2 , **Gray Clay And Shale, White Shale, Sandstone, Sand** 1 , **White Clay, Chalk, Sandy Shale, Gray Shale, Sand** 1 , **Light Gray Clay And Shale, Gray Shale, Sand** 1 , **Gray Clay, Gray Shale, Silt Stone, Sand** 1 |
| 300–500 ft | **Sand** 4 , **Rock** 2 , **Tan Watersand** 2 , **Gray Shale & Sand** 1 , **Gray Clay, Gray Shale, Tanm-Bnrown Quartz** 1 , **Gray Clay, Gray Shale** 1 |
| 500–1000 ft | **Sand** 69 , **Gray Shale** 35 , **Shale** 30 , **Sand Shale Sequence** 9 , **Red Shale** 10 , **Sand And Shale** 4 |
| 1000–5000 ft | **Shale** 8 , **Sand** 8 , **Sand And Shale** 3 , **Gray Shale** 4 , **Gray Clay & Shale** 1 , **Broken Sand** 1 |

### Who drills here

*Licensed firms in state well grid 18-43, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Earth Tech](/driller/earth-tech.md) | 32 | 920 | 25 | 2004–2015 |
| [Double D Drilling](/driller/double-d-drilling.md) | 17 | 910 | 23 | 2011–2026 |
| [Dierks Drilling Co.](/driller/dierks-drilling-co.md) | 10 | 60 | 10 | 2001–2012 |
| [A.L. Moser Drilling, Inc.](/driller/a-l-moser-drilling-inc.md) | 9 | 1,000 | 12 | 2003–2016 |
| [THI WATER WELL](/driller/thi-water-well.md) | 4 | 1,275 | — | 2022–2025 |
| [Environmental Logistics Company, LLC](/driller/environmental-logistics-company-llc.md) | 4 | 22 | — | 2022–2025 |
| [Barco Well Service, LP](/driller/barco-well-service-lp.md) | 3 | 940 | 204 | 2016–2024 |
| Ground to Sprinkler | 3 | 500 | 25 | 2006–2007 |
| [Erwin Water Well Drilling](/driller/erwin-water-well-drilling.md) | 2 | 1,000 | 35 | 2010–2026 |
| [M5 Drilling](/driller/m5-drilling.md) | 2 | 650 | 31 | 2025 |
| [Roddy Qualls Environmental Drilling](/driller/roddy-qualls-environmental-drilling.md) | 2 | 15 | — | 2018 |
| [SCI](/driller/sci.md) | 2 | 40 | — | 2008 |
| DALE CHEPULIS | 2 | 1,015 | 20 | 2004 |
| Dale Chepulis/Lonestar Underground Inc. | 2 | 670 | 25 | 2003 |
| DFW Well Services LLC | 1 | 1,170 | 17 | 2025 |
| Desert Eagle Drilling | 1 | 914 | 40 | 2025 |
| [Action Water Wells Trust](/driller/action-water-wells-trust.md) | 1 | 1,137 | — | 2025 |
| [Hydro Resources](/driller/hydro-resources.md) | 1 | 1,500 | — | 2024 |
| [Axis Drilling](/driller/axis-drilling.md) | 1 | 1,040 | — | 2025 |
| [Holly Water Wells](/driller/holly-water-wells.md) | 1 | 2,450 | 380 | 2020 |
| [Priceless Water Wells](/driller/priceless-water-wells.md) | 1 | 100 | — | 2016 |
| Andrus Drilling Company | 1 | — | 20 | 2011 |
| [Strittmatter Irrigation](/driller/strittmatter-irrigation.md) | 1 | 1,185 | 21 | 2012 |
| [J.L. Myers Company](/driller/j-l-myers-company.md) | 1 | 2,730 | 300 | 2003 |
| DD Drilling Inc. | 1 | 780 | 22 | 2008 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Irrigation | 59 | 53.6% | 900 |
| Domestic | 24 | 21.8% | 1,000 |
| Stock | 11 | 10.0% | 980 |
| Monitor | 5 | 4.5% | 16 |
| Public Supply | 4 | 3.6% | 1,538 |
| Environmental Soil Boring | 4 | 3.6% | 22 |
| Other | 1 | 0.9% | 914 |
| Industrial | 1 | 0.9% | 650 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 58 | 900 | 450 |
| 2010s | 28 | 900 | 550 |
| 2020s | 24 | 988 | 600 |

### The deepest reports on file

*Deepest reports in state well grid 18-43. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 202016 | 2003 | 2,730 | 568 | 300 | Irrigation |
| 554842 | 2020 | 2,450 | 789 | 380 | Public Supply |
| 715334 | 2025 | 1,820 | 967 | — | Irrigation |
| 45517 | 2004 | 1,538 | 500 | 350 | Public Supply |
| 700677 | 2024 | 1,500 | 644 | — | Public Supply |
| 716350 | 2025 | 1,275 | 675 | — | Public Supply |
| 121585 | 2007 | 1,205 | 570 | 150 | Irrigation |
| 295099 | 2012 | 1,185 | — | 21 | Domestic |
| 729500 | 2025 | 1,170 | — | 17 | Domestic |
| 448582 | 2017 | 1,140 | — | 25 | 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 18-43?

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 [Collin County](/county/collin.md).

### Grids with a comparable number of reports

- [37-38](/area/37-38.md)
- [38-01](/area/38-01.md)
- [38-45](/area/38-45.md)
- [59-33](/area/59-33.md)
- [60-11](/area/60-11.md)
- [04-43](/area/04-43.md)
- [10-12](/area/10-12.md)
- [20-24](/area/20-24.md)
- [23-06](/area/23-06.md)
- [41-15](/area/41-15.md)
- [58-45](/area/58-45.md)
- [68-64](/area/68-64.md)
- [83-09](/area/83-09.md)

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Página: https://texas-water-wells.pages.dev/area/18-43/
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