How deep are water wells in Llano, Texas?

Q: How much does a water well cost in Llano?

At the median depth (200 feet), a complete well would cost roughly $7,500 to $18,500, by TerraFunded's estimate from published Texas driller prices. The real price comes from a licensed driller's quote.

Q: How deep is the water in Llano?

When the wells were finished, the water stood a median 47 feet below the surface (69 wells), well above the bottom: the typical well holds about 153 feet of water. The level moves with drought and from one well to the next.

Q: Do I need a permit to drill a well in Llano?

In the state's boundary file (current as of November 2019) no groundwater conservation district covers Llano. Districts created or enlarged since then are missing from that file, so confirm with the county or TWDB before drilling. Anywhere in Texas the well must be drilled by a licensed driller, who files the report with the state.

Home water wells in and around Llano, Texas are typically 132 to 220 feet deep (median 200 ft, 119 wells drilled in the last 10 years). 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 Llano County

Under Llano, Llano County

The well and the water are the median of 119 real wells. This atlas does not have a state layer model for this area yet.

Home wells in and around Llano

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: Llano and about 2 miles around it

Key figures

Typical depth (middle half): 132 to 220 feet
Median depth: 200 feet
Deepest 10% are past: 260 feet
Water level (median): 47 feet; 69 wells
Yield (median): 10 gpm; 79 wells, gallons per minute
Wells used: 119; In the last 10 years
Inside the city limits: 77; the rest within 2 miles
All years on file: 424; median 200 ft, since 2001
Confidence: Standard (30 or more wells)

When the wells were finished, the water stood a median 47 feet below the surface (69 wells), well above the bottom: the typical well holds about 153 feet of water.

The well and the water are the median of 119 real wells. This atlas does not have a state layer model for this area yet.

Which formation do wells in Llano draw from?

We cannot say yet for Llano. 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 Llano County

Depth over time

Home well depth in and around Llano has not changed meaningfully in 20 years: the median was 160 feet in 2003 to 2007 and 200 feet in 2021 to 2025 (a difference under 10% or within the margin of error).

Period	Median depth (ft)	Wells
2001–2005	190	76
2006–2010	160	93
2011–2015	200	118
2016–2020	200	72
2021–2025	200	60
2026	under 10 wells	5

What a well costs in Llano

At the median depth for Llano (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 (132 to 220 feet) the range runs from $6,000 to $19,500. 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.

Where it sits

Wells in Llano County
City · 30.7509, -98.6764

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 Llano, Texas?

Home water wells in and around Llano, Texas are typically 132 to 220 feet deep (median 200 ft, 119 wells drilled in the last 10 years). One in ten goes past 260 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 Llano?

At the median depth (200 feet), a complete well would cost roughly $7,500 to $18,500, 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 Llano?

When the wells were finished, the water stood a median 47 feet below the surface (69 wells), well above the bottom: the typical well holds about 153 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 Llano?

In the state's boundary file (current as of November 2019) no groundwater conservation district covers Llano. Districts created or enlarged since then are missing from that file, so confirm with the county or TWDB before drilling. Anywhere in Texas the well must be drilled by a licensed driller, who files the report with the state.

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/llano-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.