Water wells in Mills County, Texas
1,049 well reports on file. The median well here was taken to 300 ft and struck water at 150 ft — against 180 ft and 80 ft across Texas.
What you will drill through in Mills County
| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | Clay 146, Sand 117, Clay And Rock 123, Overburden 107, Topsoil 92, Top Soil 73 |
| 25–50 ft | Sand 74, Gray Shale 40, Clay 26, Rock 26, Shale 30, Sandstone 25 |
| 50–100 ft | Sand 75, Gray Shale 47, Shale 43, Sandstone 40, Clay And Rock 43, Clay 38 |
| 100–200 ft | Shale 97, Sand 94, Sandstone 65, Gray Shale 56, Rock 32, Red Clay 32 |
| 200–300 ft | Sand 83, Shale 53, Sandstone 44, Red Shale 32, Limestone 25, Sandy Shale 28 |
| 300–500 ft | Shale 70, Sand 55, Brown Lime 38, Red Shale 29, Limestone 29, Sandstone 30 |
| 500–1000 ft | Brown Lime 5, Yellow Clay 6, Red Shale 4, Shale 5, Yellow Shale 4, Black Shale 4 |
| 1000–5000 ft | Dolomite & Shale 1, Hickory Sand 1, Grey Shale & Clay 1 |
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 Mills County
What the wells are for
| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Domestic | 591 | 56.3% | 310 |
| Stock | 262 | 25.0% | 245 |
| Irrigation | 161 | 15.3% | 300 |
| Test Well | 21 | 2.0% | 200 |
| Monitor | 9 | 0.9% | 20 |
| Public Supply | 3 | 0.3% | 416 |
| Closed-Loop Geothermal | 2 | 0.2% | — |
| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 326 | 290 | 142 |
| 2010s | 389 | 300 | 162 |
| 2020s | 334 | 282 | 130 |
The deepest reports on file
| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 692463 | 2022 | 3,140 | 80 | 500 | Stock |
| 507787 | 2018 | 1,190 | 215 | 30 | Domestic |
| 507757 | 2018 | 1,190 | — | — | Domestic |
| 216126 | 2008 | 1,070 | — | 15 | Domestic |
| 359861 | 2014 | 1,010 | 305 | 5 | Domestic |
| 645838 | 2023 | 640 | 459 | 15 | Stock |
| 156861 | 2008 | 630 | 417 | 90 | Stock |
| 657952 | 2023 | 620 | 462 | 30 | Stock |
| 516303 | 2019 | 620 | 430 | 70 | Domestic |
| 515022 | 2019 | 620 | 411 | 200 | 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 Mills 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.
Counties with a comparable number of reports
A sliding window, not a ranking. Every county.