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How deep are water wells in Trinity, Texas?

Home water wells in and around Trinity, Texas are typically 216 to 312 feet deep (median 256 ft, 32 wells reported since 2001). Estimated cost of a complete well at the median depth: $9,000 to $22,000.

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 pointTrinity County
What is under Trinity, TexasUnderground column at the center of Trinity: median well 256 ft, middle half 216 to 312 ft, water at 65 ft.No state layer model here yet0200400600ftGround levelMedian well: 256 ftWater standing in the well from 65 ftWater level65 ftMiddle half216–312 ftMedian well256 ft

Under Trinity, Trinity County

The well and the water are the median of 32 real wells. This atlas does not have a state layer model for this area yet.

Home wells in and around Trinity

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: Trinity and about 2 miles around it

Key figures

Typical depth (middle half)
216 to 312 feet
Median depth
256 feet
Deepest 10% are past
512 feet
Water level (median)
65 feet
25 wells
Yield (median)
20 gpm
25 wells, gallons per minute
Wells used
32
Since 2001
Inside the city limits
6
the rest within 2 miles
All years on file
32
median 256 ft, since 2003
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 65 feet below the surface (25 wells), well above the bottom: the typical well holds about 191 feet of water.

What is under Trinity, TexasUnderground column at the center of Trinity: median well 256 ft, middle half 216 to 312 ft, water at 65 ft.No state layer model here yet0200400600ftGround levelMedian well: 256 ftWater standing in the well from 65 ftWater level65 ftMiddle half216–312 ftMedian well256 ft
The well and the water are the median of 32 real wells. This atlas does not have a state layer model for this area yet.

Which formation do wells in Trinity draw from?

We cannot say yet for Trinity. 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 Trinity County

Depth over time

Too few wells per period in and around Trinity to compare depth over time. Since 2003, 32 home wells have been reported, with a median of 256 feet.

PeriodMedian depth (ft)Wells
2001–2005under 10 wells5
2006–2010under 10 wells7
2011–2015under 10 wells6
2016–202026511
2021–2025under 10 wells3

What a well costs in Trinity

At the median depth for Trinity (256 feet), a complete home well would cost roughly $9,000 to $22,000: $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 (216 to 312 feet) the range runs from $8,000 to $25,000. 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 Trinity, Texas?

Home water wells in and around Trinity, Texas are typically 216 to 312 feet deep (median 256 ft, 32 wells reported since 2001). One in ten goes past 512 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 Trinity?

At the median depth (256 feet), a complete well would cost roughly $9,000 to $22,000, 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 Trinity?

When the wells were finished, the water stood a median 65 feet below the surface (25 wells), well above the bottom: the typical well holds about 191 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 Trinity?

In the state's boundary file (current as of November 2019) no groundwater conservation district covers Trinity. 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/trinity-tx. License CC BY 4.0. https://doi.org/10.5281/zenodo.24126380.

Sources