# Well grid 18-44, Texas — Collin — how deep, and through what

> 361 well reports in Texas state well grid 18-44, covering Collin. Median depth 16 ft.

## Texas well grid 18-44

A 7.5-minute quadrangle of the Texas state well grid, mostly in [Collin County](/county/collin.md). **361** reports, median depth **16 ft**.

### What you will drill through in grid 18-44

*Logged in state well grid 18-44, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Dark Brown Clay** 48 , **Tan Weathered Limestone** 42 , **Brown Clay** 41 , **Tan Clay** 40 , **Top Soil , Clay , Limestone** 25 , **Black Clay** 23 |
| 25–50 ft | **Tan Clay** 4 , **Limestone** 3 , **Tan/Grey Weathered** 3 , **Tan Limestone** 3 , **Gray Limestone** 3 , **Austin Chalk** 3 |
| 50–100 ft | **Gray Limestone Chalk** 1 , **Shale Lime** 1 , **Gray Shale/Lime** 1 , **Grey Shale** 1 |
| 100–200 ft | **Gray Shale** 2 , **Shale** 1 |
| 200–300 ft | **Gray Shale** 2 , **Shale** 2 , **Sandy Shale** 1 , **Shale With Lime Streaks** 1 , **Sand W/Lime & Shale** 1 |
| 300–500 ft | **Shale** 2 , **Sand** 2 , **Gray Shale** 2 , **Shale, Limestone** 1 , **Grey Shale W/Lime Streaks** 1 , **Sandy Grey Shale** 1 |
| 500–1000 ft | **Sand** 10 , **Gray Shale** 4 , **Shale** 5 , **Gray Shale W Ls Stks** 1 , **Sand Shale Sequence** 2 , **Red Bed** 2 |
| 1000–5000 ft | **Sand** 17 , **Shale** 9 , **Gray Shale** 7 , **Sandy Shale** 5 , **Lime** 4 , **Sand Shale** 2 |

### Who drills here

*Licensed firms in state well grid 18-44, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Sunbelt Industrial Services](/driller/sunbelt-industrial-services.md) | 80 | 21 | — | 2006–2019 |
| [MagnaCore Drilling & Environmental Services](/driller/magnacore-drilling-environmental-services.md) | 53 | 8 | — | 2007–2015 |
| [Environmental Logistics Company, LLC](/driller/environmental-logistics-company-llc.md) | 31 | 6 | — | 2016–2024 |
| [RIOMAR DRILLING INC](/driller/riomar-drilling-inc.md) | 28 | 12 | — | 2013–2016 |
| [Roddy Qualls Environmental Drilling](/driller/roddy-qualls-environmental-drilling.md) | 27 | 25 | — | 2016–2022 |
| [Strata Core Services, LLC](/driller/strata-core-services-llc.md) | 20 | 16 | — | 2012–2017 |
| [WEST Drilling](/driller/west-drilling.md) | 17 | 15 | — | 2019–2022 |
| U. S. T. Services | 12 | 26 | — | 2012 |
| [Total Support Services](/driller/total-support-services.md) | 9 | 26 | — | 2012–2014 |
| [Strata Core Drilling Co.](/driller/strata-core-drilling-co.md) | 8 | 55 | — | 2010 |
| [Double D Drilling](/driller/double-d-drilling.md) | 7 | 1,300 | 25 | 2016–2025 |
| [SLA](/driller/sla.md) | 6 | 6 | — | 2005–2011 |
| [THI WATER WELL](/driller/thi-water-well.md) | 4 | 1,550 | — | 2022–2026 |
| [Jones Environmental, Inc.](/driller/jones-environmental-inc.md) | 4 | 20 | — | 2022–2024 |
| [Advanced Drilling Systems, Inc.](/driller/advanced-drilling-systems-inc.md) | 4 | 16 | — | 2021 |
| [Texplor of Dallas, Inc.](/driller/texplor-of-dallas-inc.md) | 4 | 35 | — | 2012 |
| [Dierks Drilling Co.](/driller/dierks-drilling-co.md) | 4 | 70 | 5 | 2003–2007 |
| [MagnaCore Drilling and Environmental Services, Inc.](/driller/magnacore-drilling-and-environmental-services-inc.md) | 3 | 7 | — | 2021 |
| [Subterra Environmental Services, LLC.](/driller/subterra-environmental-services-llc.md) | 3 | 15 | — | 2019 |
| FCS Construction | 3 | 1,320 | 175 | 2014–2016 |
| [Johnson Drilling, Inc.](/driller/johnson-drilling-inc.md) | 3 | — | — | 2012–2014 |
| [Groundwater Monitoring Inc.](/driller/groundwater-monitoring-inc.md) | 3 | 10 | — | 2006 |
| [CM2, Inc.](/driller/cm2-inc.md) | 3 | 8 | — | 2001–2003 |
| [Savage Excavation](/driller/savage-excavation.md) | 2 | 24 | — | 2025 |
| [Barco Well Service, LP](/driller/barco-well-service-lp.md) | 2 | 1,408 | 140 | 2014–2019 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Environmental Soil Boring | 159 | 44.0% | 10 |
| Monitor | 155 | 42.9% | 22 |
| Irrigation | 16 | 4.4% | 1,330 |
| Test Well | 9 | 2.5% | 15 |
| Stock | 7 | 1.9% | 1,300 |
| Closed-Loop Geothermal | 5 | 1.4% | 300 |
| Public Supply | 4 | 1.1% | 2,490 |
| Industrial | 2 | 0.6% | 1,760 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 71 | 10 | 280 |
| 2010s | 211 | 18 | 378 |
| 2020s | 79 | 16 | 575 |

### The deepest reports on file

*Deepest reports in state well grid 18-44. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 638186 | 2023 | 2,530 | 846 | — | Public Supply |
| 95109 | 2006 | 2,490 | — | — | Public Supply |
| 692005 | 2025 | 1,760 | 530 | 190 | Industrial |
| 460234 | 2016 | 1,600 | 500 | 85 | Irrigation |
| 638174 | 2022 | 1,550 | 624 | — | Public Supply |
| 183116 | 2005 | 1,530 | 530 | 21 | Irrigation |
| 33898 | 2004 | 1,500 | 718 | 150 | Public Supply |
| 274049 | 2011 | 1,480 | 378 | 45 | Irrigation |
| 605684 | 2022 | 1,460 | — | — | Irrigation |
| 396656 | 2015 | 1,450 | 500 | 10 | 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 18-44?

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

- [66-15](/area/66-15.md)
- [68-03](/area/68-03.md)
- [87-47](/area/87-47.md)
- [35-62](/area/35-62.md)
- [66-25](/area/66-25.md)
- [67-40](/area/67-40.md)
- [68-10](/area/68-10.md)
- [57-31](/area/57-31.md)
- [66-02](/area/66-02.md)
- [35-39](/area/35-39.md)
- [10-55](/area/10-55.md)
- [83-03](/area/83-03.md)
- [03-59](/area/03-59.md)

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Página: https://texas-water-wells.pages.dev/area/18-44/
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