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How deep are water wells in Wilmer, Texas?

Home water wells in and around Wilmer, Texas are typically 36 to 61 feet deep (median 52 ft, 46 wells drilled in the last 10 years). Nearly all draw from younger formations above the Woodbine (98%), according to the state's Northern Trinity and Woodbine model (TWDB). Estimated cost of a complete well at the median depth: $4,000 to $9,500.

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 pointDallas County
What is under Wilmer, TexasUnderground column at the center of Wilmer: median well 52 ft, middle half 36 to 61 ft, water at 20 ft, and the layers of the state's model with their thickness.Above the Woodbine: 0 to 1,079 ftAbove the Woodbinecontinues to 3,566 ft020406080100ftGround level · 468 ft above sea levelMedian well: 52 ftWater standing in the well from 20 ftWater level20 ftMiddle half36–61 ftMedian well52 ft

Under Wilmer, Dallas County

Layers at the center of Wilmer from TWDB's Northern Trinity and Woodbine model (quarter mile cells, summarized here to about 1.3 miles), at true depth scale. The well and the water are the median of 46 real wells.

Home wells in and around Wilmer

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: Wilmer and about 2 miles around it

Key figures

Typical depth (middle half)
36 to 61 feet
Median depth
52 feet
Deepest 10% are past
90 feet
Water level (median)
20 feet
27 wells
Yield (median)
15 gpm
36 wells, gallons per minute
Wells used
46
In the last 10 years
Inside the city limits
2
the rest within 2 miles
All years on file
99
median 50 ft, since 2001
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 20 feet below the surface (27 wells), well above the bottom: the typical well holds about 32 feet of water.

What is under Wilmer, TexasUnderground column at the center of Wilmer: median well 52 ft, middle half 36 to 61 ft, water at 20 ft, and the layers of the state's model with their thickness.Above the Woodbine: 0 to 1,079 ftAbove the Woodbinecontinues to 3,566 ft020406080100ftGround level · 468 ft above sea levelMedian well: 52 ftWater standing in the well from 20 ftWater level20 ftMiddle half36–61 ftMedian well52 ft
Layers at the center of Wilmer from TWDB's Northern Trinity and Woodbine model (quarter mile cells, summarized here to about 1.3 miles), at true depth scale. The well and the water are the median of 46 real wells.

Which formation do wells in Wilmer draw from?

Nearly all draw from younger formations above the Woodbine (98%), according to the state's Northern Trinity and Woodbine model (TWDB).

Layer (state's model)ShareWellsTypical depth (ft)
Above the Woodbine98%4535–60
Woodbine2%1—

For 76% of these wells the report says where the water enters and we use the middle of that interval; for the rest we use the bottom of the hole, which tends to read one layer too deep.

The layers under the center of Wilmer

From the state's model, at 468 feet above sea level. These are the model's depths at that one point, not those of any particular lot.

Depths in feet below ground.
Layer (state's model)Top (ft)Bottom (ft)Thickness (ft)
Above the Woodbineshale, chalk and marl01,0791,079
Woodbinesandstone with shale1,0791,448369
Washita and Fredericksburglimestone, marl and clay1,4482,069621
Upper Trinitysandstone, limestone and marl2,0692,896827
Lower Trinitysandstone with shale and limestone2,8963,566670

Depth over time

There are not enough wells in both 2003 to 2007 and 2021 to 2025 (at least 30 in each) to say with confidence whether wells in and around Wilmer are getting deeper. For reference, the median was 42 feet in 2001 to 2005 (27 wells) and 51 feet in 2021 to 2025 (27 wells).

PeriodMedian depth (ft)Wells
2001–20054227
2006–20105414
2011–2015under 10 wells9
2016–20205121
2021–20255127
2026under 10 wells1

What a well costs in Wilmer

At the median depth for Wilmer (52 feet), a complete home well would cost roughly $4,000 to $9,500: $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 (36 to 61 feet) the range runs from $3,500 to $10,000. 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 Wilmer, Texas?

Home water wells in and around Wilmer, Texas are typically 36 to 61 feet deep (median 52 ft, 46 wells drilled in the last 10 years). One in ten goes past 90 feet. The depth a given tract needs depends on where it sits and what layers the driller hits.

What aquifer or formation do wells in Wilmer draw from?

Nearly all draw from younger formations above the Woodbine (98%), according to the state's Northern Trinity and Woodbine model (TWDB). This is an estimate from the state's regional model, not a survey of the lot.

How much does a water well cost in Wilmer?

At the median depth (52 feet), a complete well would cost roughly $4,000 to $9,500, 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 Wilmer?

When the wells were finished, the water stood a median 20 feet below the surface (27 wells), well above the bottom: the typical well holds about 32 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 Wilmer?

In the state's boundary file (current as of November 2019) no groundwater conservation district covers Wilmer. 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.

To tell which layer a well draws from, we take the ground elevation at its location, subtract the depth of the interval where water enters (or the bottom of the hole when the report does not give one) and see which layer of the state's model that point falls in.

For 76% of these wells the report says where the water enters and we use the middle of that interval; for the rest we use the bottom of the hole, which tends to read one layer too deep.

How well it works: In 7,977 wells in the area of the state's Northern Trinity and Woodbine model (North and Central Texas) where the State of Texas recorded the aquifer, our estimate of the formation the well draws from names the same layer of the state's model in about 74% of them, and that layer or the one next to it in at least 95%; among the 3,130 of those wells that the state places in a Trinity layer (Paluxy to Hosston) it is about 56%.

  • The layers come from the Texas Water Development Board's Northern Trinity and Woodbine model, with quarter mile cells, summarized here to about 1.3 miles. It is a regional model, not a survey of any lot: between one model point and the next, the real depth of each layer can differ.
  • In this model every layer is at least 30 feet thick, even where the real rock is thinner or missing. Thin layers and the edges of the model are approximate.
  • Inside the Trinity this atlas does not name single model layers: it groups the Paluxy and Glen Rose (upper Trinity) and groups the Hensell, Pearsall and Hosston (lower Trinity, Twin Mountains and Travis Peak), because the check against the state's codes shows the method cannot separate them reliably.
  • "Near or below the base of the Trinity" means the well reaches the bottom of the model or passes it, often by tens of feet. Older rock that the model does not include may lie there.
  • We never use the model's water levels. The water level on this page is the one each driller measured when the well was finished.

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

Sources