Water wells in the San Patricio County Groundwater Conservation District

Q: What does a groundwater conservation district do?

In Texas, districts are the local authority over groundwater: they can require registration or permits for new wells, set spacing from other wells and property lines, and limit pumping. Each district writes its own rules, so ask the San Patricio County Groundwater Conservation District before drilling inside it.

Home water wells inside the San Patricio County Groundwater Conservation District (San Patricio County, Texas) are typically 150 to 250 feet deep (median 200 ft, 329 wells drilled in the last 10 years). Over the last three full years drillers reported about 31 new home wells a year; the peak was 65 in 2004. Estimated cost of a complete well at the median depth: $7,500 to $18,500.

Updated every day from Texas Water Development Board driller reports. Last update: November 11, 2026, using the state file of November 10, 2026.

See the wells and layers at an exact point

Under the center of the San Patricio County GCD

District boundary from TWDB's file current as of November 2019. Later changes are not shown.

Home wells in and around the San Patricio County GCD

Each dot is a home well from a state driller report, colored by depth. Tap one for its details and official report. Tap an empty spot to see what is under that point.

See underground

Well depth (ft)

<100
100
200
300
400
600
800+

Dark line: the district boundary (TWDB, 2019)

Key figures

Typical depth (middle half): 150 to 250 feet
Median depth: 200 feet
Deepest 10% are past: 286 feet
Water level (median): 36 feet; 305 wells
Yield (median): 42.5 gpm; 248 wells, gallons per minute
Wells used: 329; In the last 10 years
Counties: 1
All years on file: 931; median 185 ft, since 2001
Confidence: Standard (30 or more wells)

When the wells were finished, the water stood a median 36 feet below the surface (305 wells), well above the bottom: the typical well holds about 164 feet of water.

District boundary from TWDB's file current as of November 2019. Later changes are not shown.

New home wells per year

Over the last three full years drillers reported about 31 new home wells a year; the peak was 65 in 2004.

Domestic wells with a depth, by the year they were finished. 2026 is still in progress.

Show the data table

Year	Wells
2002	1
2003	51
2004	65
2005	58
2006	51
2007	47
2008	48
2009	37
2010	33
2011	42
2012	37
2013	30
2014	41
2015	33
2016	30
2017	30
2018	36
2019	34
2020	49
2021	27
2022	26
2023	34
2024	20
2025	39
2026	31

Places with the most wells in the district

Place	Median depth (ft)	Middle half (ft)	Wells	Main layer
Aransas Pass	167	160–185	230	—
Lake City	220	182–244	98	—
Sandy Hollow-Escondidas	240	181–265	93	—
Falman	165	160–183	82	—
Lakeshore Gardens-Hidden Acres	160	144–211	68	—
Lakeside (San Patricio County)	185	150–242	60	—
Ingleside	147	120–160	54	—
San Patricio	193	167–240	53	—
Sinton	190	140–220	45	—
Del Sol	132	90–195	42	—
Paisano Park	180	150–200	42	—
Edgewater Estates	190	150–237	41	—

Counties

San Patricio County

Depth over time

New home wells in the district are deeper than 20 years ago: the median went from 170 feet (2003 to 2007) to 200 feet (2021 to 2025), 18% more. Deeper wells do not always mean the water dropped: a driller may be going for another layer, better water or more reserve.

Period	Median depth (ft)	Wells
2001–2005	168	176
2006–2010	180	216
2011–2015	190	183
2016–2020	190	179
2021–2025	200	146
2026	220	31

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Common questions

How deep are wells in the San Patricio County GCD?

What does a groundwater conservation district do?

In Texas, districts are the local authority over groundwater: they can require registration or permits for new wells, set spacing from other wells and property lines, and limit pumping. Each district writes its own rules, so ask the San Patricio County Groundwater Conservation District before drilling inside it.

What a well costs here

At the median depth for the district (200 feet), a complete home well would cost roughly $7,500 to $18,500: $25 to $60 per foot for drilling, casing and seal, plus $2,500 to $6,500 for the pump, pressure tank, controls and hookup at the well. Across the whole middle half of depths (150 to 250 feet) the range runs from $6,500 to $21,500. This is TerraFunded's estimate from published Texas prices, not a quote, and it leaves out trenching and the line to the house. Get prices from at least two licensed drillers.

How these numbers are made

We count new and replacement domestic (home) wells whose coordinates fall inside the district boundary. We use the last 10 years when there are at least 30 wells; otherwise all since 2001. The median is the middle well and the middle half runs from the 25th to the 75th percentile.

These are depths of real wells drilled nearby, not a promise about any property. Groundwater can change over short distances and with drought. A licensed water well driller can tell you what to expect on a specific tract.

Read the full methodology · Download the data (CSV, CC BY 4.0)

How to cite

TerraFunded (2026). Texas Well Atlas: Underground. From Texas Water Development Board driller reports and groundwater availability models (data as of November 10, 2026). https://terrafunded.com/wells/districts/san-patricio-groundwater-conservation-district. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.