Water wells in McMullen County, Texas
408 well reports on file. The median well here was taken to 255 ft and struck water at 129 ft — against 180 ft and 80 ft across Texas.
What you will drill through in McMullen County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Top Soil 79, Surface 54, Tan Clay 36, Clay 34, Caliche 30, Topsoil 25 |
| 25–50 ft | Tan Clay 10, Gray Clay 9, Shale 6, Silty Clay; Brown 6, Clay; Brown 5, Brown Sand 4 |
| 50–100 ft | Shale 11, Tan Clay 6, Gray Clay 5, Tan Sand 4, Clay 4, Red Clay 4 |
| 100–200 ft | Shale 19, Tan Clay 11, Sand 9, Gray Clay 7, Sandy Clay 6, Gray Sand 6 |
| 200–300 ft | Tan Clay 9, Gray Clay 6, Shale 6, Sand 4, Sandy Shale 4, Tan Sand 3 |
| 300–500 ft | Shale 20, Sand 14, Tan Clay 12, Rock 4, Clay 3, Sandy Shale 4 |
| 500–1000 ft | Shale 42, Sand 20, Sandy Shale 15, Sand & Shale 13, Gray Clay 6, Grey Clay 2 |
| 1000–5000 ft | Shale 85, Sand 81, Sandy Shale 41, Carrizo Sand 61, Gray Shale 30, Sand & Shale 23 |
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 McMullen County
| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| Water Well Services, Inc. | 69 | 4,270 | 300 | 2009–2017 |
| Vortex Drilling, Inc. | 62 | 15 | — | 2011–2024 |
| Envirotech Drilling Services LLC | 38 | 15 | — | 2022–2025 |
| Bull's Eye Services, LLC | 24 | 3,975 | 800 | 2011–2025 |
| EnviroCore, Inc. | 23 | 46 | — | 2023–2026 |
| Thomas Moy and Sons | 19 | 4,013 | 1,350 | 2010–2017 |
| Edward Pawlik & Son Well Service | 19 | 240 | 14 | 2004–2009 |
| Mhc x-ploration corp | 13 | 93 | — | 2016–2024 |
| Lighthouse Environmental | 12 | 8 | — | 2014 |
| McKinley Drilling | 9 | 4,100 | 650 | 2009–2025 |
| Danny J. Stricker Water Well Drilling | 9 | 4,500 | 200 | 2009–2010 |
| Moy's Water Well Drilling & Services of Texas | 8 | 4,020 | 300 | 2019–2025 |
| Vortex Drilling Partners, LP | 8 | 5 | — | 2021 |
| Unison Drilling Inc | 8 | 3,300 | 250 | 2011–2018 |
| PAWLIK & SON W.S. | 7 | 340 | 20 | 2015–2017 |
| James Pawlik Water Well Ser. Inc. | 7 | 80 | 6 | 2009–2010 |
| Thomas Moy and Sons Water Well Drilling Inc. | 6 | 720 | 100 | 2010–2026 |
| James Pawlik Water Well Service, Inc. | 6 | 680 | 7 | 2024–2025 |
| EDWARD PAWLIK & SON W S | 6 | 360 | 12 | 2010–2014 |
| BULLS EYE SERVICES LLC | 5 | 4,585 | 800 | 2020–2024 |
| Evans Drilling | 5 | 4,127 | 300 | 2010–2011 |
| White Drilling Company, Inc. | 4 | 30 | — | 2016 |
| James Pawlik Water Wll Service, Inc. | 3 | 580 | 10 | 2015–2020 |
| Moy's Water Well Services | 3 | 185 | 10 | 2018–2019 |
| Richardson Water Well Drilling | 2 | 4,718 | — | 2015–2021 |
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Environmental Soil Boring | 98 | 24.0% | 15 |
| Fracking Supply | 70 | 17.2% | 4,100 |
| Rig Supply | 68 | 16.7% | 4,127 |
| Monitor | 63 | 15.4% | 30 |
| Domestic | 58 | 14.2% | 370 |
| Stock | 41 | 10.0% | 640 |
| Industrial | 5 | 1.2% | 3,130 |
| Irrigation | 5 | 1.2% | 4,550 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 38 | 250 | 101 |
| 2010s | 254 | 3,347 | 120 |
| 2020s | 116 | 25 | 198 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 273891 | 2011 | 4,980 | 70 | — | Fracking Supply |
| 318021 | 2013 | 4,975 | 70 | — | Fracking Supply |
| 216083 | 2010 | 4,974 | 103 | — | Rig Supply |
| 365686 | 2014 | 4,970 | 256 | — | Irrigation |
| 296817 | 2012 | 4,965 | 100 | — | Irrigation |
| 259347 | 2011 | 4,955 | 99 | 200 | Rig Supply |
| 385024 | 2014 | 4,950 | 194 | 1,000 | Fracking Supply |
| 283948 | 2012 | 4,950 | 105 | — | Fracking Supply |
| 256620 | 2011 | 4,950 | 90 | — | Fracking Supply |
| 204634 | 2009 | 4,940 | — | — | Rig Supply |
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 McMullen 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.
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Counties with a comparable number of reports
A sliding window, not a ranking. Every county.