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How deep are water wells in Santa Anna, Texas?

Only 11 home water wells in and around Santa Anna, Texas have been reported since 2001, so treat this as a rough guide: the middle half are 390 to 460 feet deep (median 430 ft). Estimated cost of a complete well at the median depth: $13,500 to $32,500.

This page is based on fewer than 30 wells, so it is kept out of search engines until more reports come in. Treat every figure as a rough guide.

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 pointStarr County
What is under Santa Anna, TexasUnderground column at the center of Santa Anna: median well 430 ft, middle half 390 to 460 ft, water at 140 ft.No state layer model here yet0200400600ftGround levelMedian well: 430 ftWater standing in the well from 140 ftWater level140 ftMiddle half390–460 ftMedian well430 ft

Under Santa Anna, Starr County

The well and the water are the median of 11 real wells. This atlas does not have a state layer model for this area yet.

Home wells in and around Santa Anna

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+

Dashed line: Santa Anna and about 2 miles around it

Key figures

Typical depth (middle half)
390 to 460 feet
Median depth
430 feet
Deepest 10% are past
505 feet
Water level (median)
140 feet
10 wells
Yield (median)
30 gpm
10 wells, gallons per minute
Wells used
11
Since 2001
Inside the city limits
6
the rest within 2 miles
All years on file
11
median 430 ft, since 2010
Confidence
Few wells (10 to 29)

When the wells were finished, the water stood a median 140 feet below the surface (10 wells), well above the bottom: the typical well holds about 290 feet of water.

What is under Santa Anna, TexasUnderground column at the center of Santa Anna: median well 430 ft, middle half 390 to 460 ft, water at 140 ft.No state layer model here yet0200400600ftGround levelMedian well: 430 ftWater standing in the well from 140 ftWater level140 ftMiddle half390–460 ftMedian well430 ft
The well and the water are the median of 11 real wells. This atlas does not have a state layer model for this area yet.

Which formation do wells in Santa Anna draw from?

We cannot say yet for Santa Anna. This atlas assigns layers with the TWDB layered models processed so far (the Northern Trinity and Woodbine model, the Hill Country Trinity model, the northern Gulf Coast Aquifer model and the High Plains Aquifer System model), and none covers this area with enough wells. The depth, water level and yield on this page do come from the real wells here.

See the aquifers mapped under Starr County

Depth over time

Too few wells per period in and around Santa Anna to compare depth over time. Since 2010, 11 home wells have been reported, with a median of 430 feet.

PeriodMedian depth (ft)Wells
2006–2010under 10 wells1
2011–2015under 10 wells3
2016–2020under 10 wells5
2021–2025under 10 wells2

What a well costs in Santa Anna

At the median depth for Santa Anna (430 feet), a complete home well would cost roughly $13,500 to $32,500: $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 (390 to 460 feet) the range runs from $12,500 to $34,000. 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.

Where it sits

Nearby places

Median depth of home wells in each place.

All Texas cities and towns

Common questions

How deep do you have to drill a well in Santa Anna, Texas?

Only 11 home water wells in and around Santa Anna, Texas have been reported since 2001, so treat this as a rough guide: the middle half are 390 to 460 feet deep (median 430 ft). One in ten goes past 505 feet. The depth a given tract needs depends on where it sits and what layers the driller hits.

How much does a water well cost in Santa Anna?

At the median depth (430 feet), a complete well would cost roughly $13,500 to $32,500, by TerraFunded's estimate from published Texas driller prices. The real price comes from a licensed driller's quote.

How deep is the water in Santa Anna?

When the wells were finished, the water stood a median 140 feet below the surface (10 wells), well above the bottom: the typical well holds about 290 feet of water. The level moves with drought and from one well to the next.

Do I need a permit to drill a well in Santa Anna?

Santa Anna is inside the Starr County Drainage and Groundwater Conservation District. Groundwater conservation districts in Texas can require registering or permitting a new well, keeping set distances from property lines and other wells, and paying fees. Rules differ from district to district: ask the district before drilling.

How these numbers are made

We count new and replacement domestic (home) wells whose coordinates fall inside the place boundary or within 2 miles of it. 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/places/santa-anna-starr-county-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.

Sources