Skip to content
ENES
Marketplace

How deep are water wells in Mercedes, Texas?

Home water wells in and around Mercedes, Texas vary a lot in depth: the middle half are 44 to 120 feet deep (median 60 ft, 79 wells reported since 2001), so look at the wells closest to the tract. Estimated cost of a complete well at the median depth: $4,000 to $10,000.

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 pointHidalgo County
What is under Mercedes, TexasUnderground column at the center of Mercedes: median well 60 ft, middle half 44 to 120 ft, water at 10 ft.No state layer model here yet050100150ftGround levelMedian well: 60 ftWater standing in the well from 10 ftWater level10 ftMedian well60 ftMiddle half44–120 ft

Under Mercedes, Hidalgo County

The well and the water are the median of 79 real wells. This atlas does not have a state layer model for this area yet.

Home wells in and around Mercedes

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: Mercedes and about 2 miles around it

Key figures

Typical depth (middle half)
44 to 120 feet
Median depth
60 feet
Deepest 10% are past
140 feet
Water level (median)
10 feet
78 wells
Yield (median)
40 gpm
33 wells, gallons per minute
Wells used
79
Since 2001
Inside the city limits
7
the rest within 2 miles
All years on file
79
median 60 ft, since 2003
Confidence
Standard (30 or more wells)

When the wells were finished, the water stood a median 10 feet below the surface (78 wells), well above the bottom: the typical well holds about 50 feet of water.

What is under Mercedes, TexasUnderground column at the center of Mercedes: median well 60 ft, middle half 44 to 120 ft, water at 10 ft.No state layer model here yet050100150ftGround levelMedian well: 60 ftWater standing in the well from 10 ftWater level10 ftMedian well60 ftMiddle half44–120 ft
The well and the water are the median of 79 real wells. This atlas does not have a state layer model for this area yet.

Which formation do wells in Mercedes draw from?

We cannot say yet for Mercedes. 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 Hidalgo County

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 Mercedes are getting deeper. For reference, the median was 45 feet in 2001 to 2005 (25 wells) and 72 feet in 2011 to 2015 (20 wells).

PeriodMedian depth (ft)Wells
2001–20054525
2006–20108216
2011–20157220
2016–2020under 10 wells8
2021–2025under 10 wells9
2026under 10 wells1

What a well costs in Mercedes

At the median depth for Mercedes (60 feet), a complete home well would cost roughly $4,000 to $10,000: $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 (44 to 120 feet) the range runs from $3,500 to $13,500. 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

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 Mercedes, Texas?

Home water wells in and around Mercedes, Texas vary a lot in depth: the middle half are 44 to 120 feet deep (median 60 ft, 79 wells reported since 2001), so look at the wells closest to the tract. One in ten goes past 140 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 Mercedes?

At the median depth (60 feet), a complete well would cost roughly $4,000 to $10,000, 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 Mercedes?

When the wells were finished, the water stood a median 10 feet below the surface (78 wells), well above the bottom: the typical well holds about 50 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 Mercedes?

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

Sources