Water wells in Knox County, Texas
837 well reports on file. The median well here was taken to 55 ft and struck water at 32 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Knox County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | White Sandy Clay 159, Red Sandy Clay 143, Top Soil 131, Red Clay 83, Caliche 79, Brown Clay 77 |
| 25–50 ft | Red Bed 99, Coarse H2O Sand 86, Red Bed & Blue Shale 81, Good Gravel 62, Red Bed & Blue Shell 50, Red Clay 46 |
| 50–100 ft | Red Bed 87, Red Bed & Blue Shale 56, Red Clay 20, Red Bed & Blue Shell 25, Good Gravel 16, Red Bed And Blue Shale 11 |
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 Knox County
| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| LEONARD DRILLING LLC | 532 | 60 | 75 | 2003–2026 |
| Gillispie Drilling | 38 | 46 | 10 | 2005–2026 |
| Talon Drilling, LP | 36 | 8 | — | 2002–2010 |
| JB Drilling | 26 | 50 | — | 2022–2024 |
| E&C DRILLING CO. | 21 | 39 | 10 | 2008–2017 |
| Subterra Environmental Services, LLC. | 15 | 35 | — | 2019–2021 |
| White Drilling Company, Inc. | 9 | 30 | — | 2001–2016 |
| Talon/LPE | 9 | 6 | — | 2010 |
| Sunbelt Industrial Services | 8 | 35 | — | 2014 |
| LEONARD WATER SERVICES | 7 | 64 | 105 | 2010–2022 |
| Peterson Drilling & Testing, Inc. | 7 | — | — | 2003–2013 |
| Pacific West Environmental and Infrastructure | 6 | 45 | — | 2025 |
| Leonard Driling LLC | 5 | 56 | 14 | 2005–2010 |
| Pacific West | 4 | 45 | — | 2024 |
| Roddy Qualls Environmental Drilling | 4 | 50 | — | 2022 |
| WEST Drilling | 4 | 50 | — | 2018 |
| Harrison and Cooper, Inc. | 4 | 30 | — | 2017 |
| Straub Corporation | 4 | 15 | — | 2016 |
| Water Well Drilling and Service | 4 | 75 | — | 2014 |
| Groundwater Monitoring Inc. | 4 | 20 | — | 2006–2008 |
| Eagle Remediation | 3 | 45 | — | 2023 |
| Leonard Dirlling LLC | 3 | 68 | 370 | 2010 |
| dba Universal Drilling Services | 3 | 25 | — | 2003–2005 |
| O'Neal Well Service | 2 | 100 | 8 | 2014 |
| Vortex Drilling, Inc. | 2 | — | — | 2012 |
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Irrigation | 304 | 36.3% | 62 |
| Domestic | 200 | 23.9% | 52 |
| Stock | 181 | 21.6% | 52 |
| Monitor | 101 | 12.1% | 35 |
| Environmental Soil Boring | 26 | 3.1% | 8 |
| Test Well | 11 | 1.3% | 80 |
| Public Supply | 7 | 0.8% | 72 |
| Rig Supply | 3 | 0.4% | 52 |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 211 | 57 | 32 |
| 2010s | 425 | 55 | 32 |
| 2020s | 201 | 53 | 29 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 552953 | 2020 | 2,160 | 47 | 140 | Irrigation |
| 557840 | 2020 | 766 | 30 | 375 | Irrigation |
| 563648 | 2021 | 170 | — | — | Test Well |
| 377300 | 2014 | 122 | 8 | 2 | Stock |
| 701850 | 2025 | 120 | — | — | Test Well |
| 725824 | 2026 | 110 | — | — | Test Well |
| 473353 | 2017 | 110 | 56 | — | Stock |
| 711916 | 2025 | 100 | — | — | Test Well |
| 711915 | 2025 | 100 | — | — | Test Well |
| 355463 | 2014 | 100 | 0 | — | Stock |
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 Knox 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.