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

> 3,134 well reports filed in San Patricio County since 2001. Median depth 51 ft, water struck at 30 ft, median yield 50 gpm.

## Water wells in San Patricio County, Texas

**3,134** well reports on file. The median well here was taken to **51 ft** and struck water at **30 ft** — against 180 ft and 80 ft across Texas.

### What you will drill through in San Patricio County

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

| Depth, ft | What was logged there |
|---|---|
| 0–25 ft | **Clay** 651 , **Sand** 552 , **Top Soil** 257 , **Topsoil** 204 , **Red Clay** 182 , **No Recovery** 101 |
| 25–50 ft | **Clay** 322 , **Sand** 219 , **Sand/Sea Shell** 43 , **Red Coarse Sand** 41 , **Fine Sand** 30 , **Caliche** 37 |
| 50–100 ft | **Clay** 440 , **Sand** 340 , **Red Clay** 166 , **Red Coarse Sand** 61 , **Sand & Clay** 49 , **Caliche** 45 |
| 100–200 ft | **Sand** 458 , **Clay** 349 , **Red Clay** 142 , **Red Coarse Sand** 99 , **Red Sand** 95 , **Sand And Clay** 69 |
| 200–300 ft | **Sand** 196 , **Clay** 101 , **Red Clay** 38 , **Sand & Clay** 29 , **Red Coarse Sand** 25 , **Sand And Clay** 16 |
| 300–500 ft | **Sand** 36 , **Clay** 25 , **Blue Clay** 8 , **Sand & Clay** 7 , **Shale** 2 , **Sandstone & Clay** 4 |
| 500–1000 ft | **Sand** 3 , **Shale** 2 , **Clay** 4 , **Clay, Gray, Silty Firm** 1 , **Sand, Gray, Med-Fine Calc** 1 , **Clay, Gray, Silty, Firm** 1 |
| 1000–5000 ft | **Sand** 2 , **Shale** 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 San Patricio County

*Licensed firms in San Patricio County, busiest first.*

| Firm of record | Wells | Median depth, ft | Median yield, gpm | Years |
|---|---|---|---|---|
| [Vortex Drilling, Inc.](/driller/vortex-drilling-inc.md) | 515 | 20 | — | 2006–2019 |
| [CARTER WATER WELL DRILLING](/driller/carter-water-well-drilling.md) | 325 | 180 | 50 | 2003–2026 |
| [B.T. Sikes Water Wells, Inc.](/driller/b-t-sikes-water-wells-inc.md) | 312 | 200 | 80 | 2003–2019 |
| [MARTIN WATER WELLS](/driller/martin-water-wells.md) | 204 | 233 | 20 | 2003–2026 |
| [EnviroCore, Inc.](/driller/envirocore-inc.md) | 192 | 20 | — | 2003–2025 |
| [Envirotech Drilling Services LLC](/driller/envirotech-drilling-services-llc.md) | 189 | 40 | — | 2013–2025 |
| [BEST DRILLING SERVICES, INC.](/driller/best-drilling-services-inc.md) | 171 | 20 | — | 2004–2025 |
| [Mikes Drilling and Pump Service](/driller/mikes-drilling-and-pump-service.md) | 143 | 135 | 30 | 2001–2026 |
| [Gainco, Inc.](/driller/gainco-inc.md) | 122 | 15 | 2 | 2010–2022 |
| [Mikes Drilling](/driller/mikes-drilling.md) | 95 | 139 | 30 | 2006–2015 |
| [Vortex Drilling Partners, LP](/driller/vortex-drilling-partners-lp.md) | 76 | 15 | — | 2019–2022 |
| [Ballard Water Well Co. LLC](/driller/ballard-water-well-co-llc.md) | 76 | 100 | 200 | 2007–2019 |
| [Roddy Qualls Environmental Drilling](/driller/roddy-qualls-environmental-drilling.md) | 58 | 15 | — | 2019–2021 |
| [Fugro Geosciences, Inc.](/driller/fugro-geosciences-inc.md) | 55 | 27 | — | 2001–2003 |
| [ECI](/driller/eci.md) | 36 | 54 | — | 2004–2008 |
| [Metcalf Drilling](/driller/metcalf-drilling.md) | 31 | 140 | 25 | 2003–2006 |
| [Bradfute Water Well Drilling](/driller/bradfute-water-well-drilling.md) | 27 | 180 | 40 | 2003–2012 |
| [Front Range Drilling, Inc.](/driller/front-range-drilling-inc.md) | 25 | 20 | — | 2013–2016 |
| [Environmental FX](/driller/environmental-fx.md) | 25 | — | — | 2007 |
| [Talon Drilling, LP](/driller/talon-drilling-lp.md) | 24 | 27 | — | 2002–2008 |
| [Cascade Technical Services](/driller/cascade-technical-services.md) | 23 | 12 | — | 2017–2019 |
| [RIOMAR DRILLING INC](/driller/riomar-drilling-inc.md) | 20 | 15 | — | 2014–2017 |
| [Select Drilling Services, LLC.](/driller/select-drilling-services-llc.md) | 20 | 12 | — | 2016 |
| [James Pawlik Water Wll Service, Inc.](/driller/james-pawlik-water-wll-service-inc.md) | 16 | 350 | 400 | 2016–2022 |
| [Rock Engineering](/driller/rock-engineering.md) | 16 | 18 | — | 2012–2020 |

### What the wells are for

*Purpose, and how deep each went.*

| Purpose | Wells | Share | Median depth, ft |
|---|---|---|---|
| Monitor | 1,123 | 35.8% | 23 |
| Domestic | 921 | 29.4% | 185 |
| Environmental Soil Boring | 583 | 18.6% | 15 |
| Irrigation | 199 | 6.3% | 139 |
| Rig Supply | 73 | 2.3% | 260 |
| De-watering | 66 | 2.1% | 100 |
| Industrial | 61 | 1.9% | 255 |
| Stock | 54 | 1.7% | 195 |

*By decade drilled.*

| Decade | Reports | Median depth, ft | Water at, ft |
|---|---|---|---|
| 2000s | 1,049 | 90 | 32 |
| 2010s | 1,483 | 30 | 27 |
| 2020s | 602 | 45 | 29 |

### The deepest reports on file

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

| Report | Year | Depth, ft | Water at, ft | Yield, gpm | Purpose |
|---|---|---|---|---|---|
| 504006 | 2018 | 2,258 | 90 | 40 | Domestic |
| 559460 | 2020 | 2,220 | 46 | 50 | Domestic |
| 508865 | 2019 | 1,130 | 23 | — | Industrial |
| 662306 | 2024 | 1,000 | 31 | — | Test Well |
| 543158 | 2020 | 760 | 28 | — | Industrial |
| 654240 | 2023 | 750 | 33 | 90 | Monitor |
| 725270 | 2026 | 700 | 69 | 700 | Public Supply |
| 141281 | 2008 | 685 | 88 | 50 | Public Supply |
| 607550 | 2019 | 650 | 30 | 30 | Monitor |
| 727998 | 2026 | 600 | — | — | Public 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 San Patricio 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

- [Montague](/county/montague.md)
- [Liberty](/county/liberty.md)
- [Grimes](/county/grimes.md)
- [Jim Wells](/county/jim-wells.md)
- [Matagorda](/county/matagorda.md)
- [Andrews](/county/andrews.md)
- [Hockley](/county/hockley.md)
- [Reagan](/county/reagan.md)
- [Kerr](/county/kerr.md)
- [Kleberg](/county/kleberg.md)
- [Medina](/county/medina.md)
- [Moore](/county/moore.md)
- [Bandera](/county/bandera.md)

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

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