# Water wells in King County, Texas — how deep, and through what

> 108 well reports filed in King County since 2001. Median depth 82 ft, water struck at 65 ft, median yield 8 gpm.

## Water wells in King County, Texas

**108** well reports on file. The median well here was taken to **82 ft** and struck water at **65 ft** — against 180 ft and 80 ft across Texas.

### What you will drill through in King County

*Logged in King County, by depth. The figure is how many wells hit it.*

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Gypsum** 18 , **Gray Shale** 19 , **Sandy Clay** 15 , **Red Clay** 8 , **Sand** 8 , **Top Soil** 8 |
| 25–50 ft | **Gypsum** 10 , **Gray Shale** 11 , **Rock** 5 , **Sandy Clay** 5 , **Gyp Rock** 4 , **Light Brown Sandy Clay** 4 |
| 50–100 ft | **Rock** 6 , **Clay** 5 , **Red Clay** 4 , **Sandy Clay** 4 , **Gyp Rock** 4 , **Sand And Water** 4 |
| 100–200 ft | **Rock** 3 , **Clay** 4 , **Red Clay** 3 , **Sand And Water** 3 , **Shale** 1 , **Gyp Rock** 2 |
| 200–300 ft | **Lime Rock (Water)** 2 , **Lime Rock (Cavity) Red Clay** 1 , **Rock** 1 , **Shale** 1 , **Clay And Rock** 1 , **Gray Lime (Water)** 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 King County

*Licensed firms in King County, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [E&C DRILLING CO.](/driller/e-c-drilling-co.md) | 26 | 107 | 6 | 2003–2024 |
| [Straub Corporation](/driller/straub-corporation.md) | 23 | 38 | — | 2005 |
| [Talon Drilling, LP](/driller/talon-drilling-lp.md) | 15 | 75 | — | 2002–2008 |
| [LEONARD DRILLING LLC](/driller/leonard-drilling-llc.md) | 9 | 80 | 13 | 2004–2024 |
| [Brent Whitaker](/driller/brent-whitaker.md) | 8 | 220 | 15 | 2013–2023 |
| [Gillispie Drilling](/driller/gillispie-drilling.md) | 5 | 91 | 12 | 2024–2026 |
| [LEONARD WATER SERVICES](/driller/leonard-water-services.md) | 4 | 120 | 10 | 2015–2026 |
| [Peterson Drilling & Testing, Inc.](/driller/peterson-drilling-testing-inc.md) | 4 | — | — | 2011 |
| [Kitchens Corrosion Control Inc.](/driller/kitchens-corrosion-control-inc.md) | 3 | 40 | — | 2004 |
| [Mahorney Drilling](/driller/mahorney-drilling.md) | 2 | 223 | 500 | 2004–2016 |
| Mullen & Sons | 2 | — | 5 | 2009 |
| [Groundwater Monitoring Inc.](/driller/groundwater-monitoring-inc.md) | 2 | — | — | 2008 |
| [Carter Drilling Co., Inc](/driller/carter-drilling-co-inc.md) | 1 | 317 | — | 2024 |
| [WP Drilling](/driller/wp-drilling.md) | 1 | 240 | 10 | 2022 |
| Mullen & Son's | 1 | — | 6 | 2012 |
| [Talon/LPE](/driller/talon-lpe.md) | 1 | 85 | — | 2010 |
| [O'Neal Well Service](/driller/o-neal-well-service.md) | 1 | 80 | 6 | 2009 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Stock | 43 | 39.8% | 100 |
| Environmental Soil Boring | 30 | 27.8% | 33 |
| Monitor | 18 | 16.7% | 85 |
| Test Well | 6 | 5.6% | 100 |
| Irrigation | 6 | 5.6% | 240 |
| Domestic | 5 | 4.6% | 80 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 51 | 43 | 65 |
| 2010s | 29 | 100 | 61 |
| 2020s | 28 | 120 | 81 |

### The deepest reports on file

*Deepest reports in King County. Column one is the tracking number.*

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 687052 | 2024 | 317 | — | — | Irrigation |
| 608070 | 2022 | 260 | 202 | 10 | Stock |
| 597862 | 2022 | 240 | 215 | 10 | Stock |
| 416443 | 2016 | 240 | 178 | 450 | Irrigation |
| 416442 | 2016 | 240 | 178 | 200 | Irrigation |
| 491514 | 2016 | 223 | 170 | 500 | Domestic |
| 637375 | 2023 | 220 | 178 | — | Irrigation |
| 636701 | 2023 | 220 | 172 | 15 | Stock |
| 514152 | 2019 | 220 | 170 | 4 | Stock |
| 33842 | 2004 | 212 | — | 500 | Irrigation |

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 King 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](/privacy.md).

### Counties with a comparable number of reports

- [Red River](/county/red-river.md)
- [Willacy](/county/willacy.md)
- [Archer](/county/archer.md)
- [Kent](/county/kent.md)
- [Zapata](/county/zapata.md)
- [Cottle](/county/cottle.md)
- [Rains](/county/rains.md)
- [Foard](/county/foard.md)
- [Hudspeth](/county/hudspeth.md)
- [Franklin](/county/franklin.md)
- [Terrell](/county/terrell.md)
- [Throckmorton](/county/throckmorton.md)
- [Shackelford](/county/shackelford.md)

A sliding window, not a ranking. [Every county](/county.md).

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Página: https://texas-water-wells.pages.dev/county/king/
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