Water wells in the Duval 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 Duval County Groundwater Conservation District before drilling inside it.

Home water wells inside the Duval County Groundwater Conservation District (Duval County, Texas) are typically 300 to 422 feet deep (median 360 ft, 154 wells drilled in the last 10 years). Drillers reported 21 new home wells in 2025, less than half the peak of 64 in 2009. Estimated cost of a complete well at the median depth: $11,500 to $28,000.

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 Duval County GCD

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

Home wells in and around the Duval 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): 300 to 422 feet
Median depth: 360 feet
Deepest 10% are past: 531 feet
Water level (median): 120 feet; 140 wells
Yield (median): 25 gpm; 147 wells, gallons per minute
Wells used: 154; In the last 10 years
Counties: 1
All years on file: 688; median 360 ft, since 2001
Confidence: Standard (30 or more wells)

When the wells were finished, the water stood a median 120 feet below the surface (140 wells), well above the bottom: the typical well holds about 240 feet of water.

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

New home wells per year

Drillers reported 21 new home wells in 2025, less than half the peak of 64 in 2009.

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

Show the data table

Year	Wells
2002	31
2003	39
2004	44
2005	32
2006	55
2007	39
2008	36
2009	64
2010	31
2011	35
2012	27
2013	36
2014	34
2015	15
2016	16
2017	16
2018	10
2019	7
2020	12
2021	6
2022	6
2023	26
2024	22
2025	21
2026	22

Places with the most wells in the district

Place	Median depth (ft)	Middle half (ft)	Wells	Main layer
San Diego	406	320–526	40	—
Benavides	320	280–356	28	—
Concepcion	340	320–345	28	—
Realitos	280	260–310	11	—
Freer	500	360–522	10	—

Counties

Duval County

Depth over time

Home well depth in the district has not changed meaningfully in 20 years: the median was 353 feet in 2003 to 2007 and 360 feet in 2021 to 2025 (a difference under 10% or within the margin of error).

Period	Median depth (ft)	Wells
2001–2005	340	152
2006–2010	360	225
2011–2015	360	147
2016–2020	372	61
2021–2025	360	81
2026	300	22

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Common questions

How deep are wells in the Duval County GCD?

Home water wells inside the Duval County Groundwater Conservation District (Duval County, Texas) are typically 300 to 422 feet deep (median 360 ft, 154 wells drilled in the last 10 years).

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 Duval County Groundwater Conservation District before drilling inside it.

What a well costs here

At the median depth for the district (360 feet), a complete home well would cost roughly $11,500 to $28,000: $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 (300 to 422 feet) the range runs from $10,000 to $32,000. 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/duval-county-groundwater-conservation-district. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.