How deep are water wells in McLennan County, Texas?

Half of the home water wells drilled in McLennan County in the last 10 years are between 80 and 1,180 feet deep. The median is 1,100 feet, based on 88 driller reports filed with the state. Note that wells here split between shallow and very deep ones, so the median alone can mislead. Search the exact point of the land. Drillers measured the water standing a median 622 feet below the surface (82 wells). That is deeper than the Texas median of 250 feet.

Updated every day from Texas Water Development Board driller reports. Last update: November 10, 2026, using the state file of November 9, 2026. 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.

Key figures

Typical depth (middle half)
80 to 1,180 ft
Median depth
1,100 feet
Deepest 10% are past
1,260 feet
Water level (median)
622 feet (82 wells)
Yield (median)
15 gallons per minute (26% pump-tested)
Wells used
88
Period
Last 10 years
Latest report
September 22, 2026
Depth rank
1 of 245 (1 = deepest)
Confidence
Standard

How deep the wells are

Number of home wells by depth, last 10 years (or since 2001 where wells are few).

Depth (ft)Wells
0 to 502
50 to 10030
100 to 1506
1,000 to 1,25040
1,250 to 1,5007
1,500 to 2,0001
2,000 to 5,000+2

Median depth by year

Median depth of home wells finished each year. Years with fewer than 10 wells are not shown.

YearMedian (ft)Wells
20171,06012
20191,12014
20209012
20251,13010

Are wells in McLennan County getting deeper?

McLennan County does not have enough domestic wells in both 2003 to 2007 and 2021 to 2025 (at least 30 in each) to compare. Read the 20-year study.

Aquifers under the county

The Texas Water Development Board maps the Trinity, a major aquifer, below other rock (subsurface) across 100% of the county; the Woodbine, a minor aquifer, under 11% of the county; the Brazos River Alluvium, a minor aquifer, under 10% of the county.

What a well costs in McLennan County

At the median depth for McLennan County (1,100 feet), a complete home well (drilling, casing, pump, pressure tank and hookup at the well) would cost roughly $30,000 to $72,500, by TerraFunded's estimate from published Texas prices. Trenching and the line to the house are extra. Get quotes from at least two licensed drillers.

Neighboring counties

Common questions

How deep do I need to drill a well in McLennan County?

The middle half of home wells drilled there are 80 to 1,180 feet deep; one in ten goes past 1,260 feet. The depth a given tract needs depends on where it is and what layers the driller hits.

How much does a water well cost in McLennan County?

At the median depth (1,100 feet), a complete well would cost roughly $30,000 to $72,500 by TerraFunded's estimate from published Texas driller prices ($25 to $60 per foot plus pump and equipment). The real price comes from a driller's quote.

How much water does a well produce in McLennan County?

Drillers reported a median of 15 gallons per minute (73 wells). Only 26% of those figures come from a pump test; the rest are the driller's estimate, so treat them as a guide.

Are wells in McLennan County getting deeper?

McLennan County does not have enough domestic wells in both 2003 to 2007 and 2021 to 2025 (at least 30 in each) to compare.

How do I see the well report for a property or a neighbor's well?

Every well drilled in Texas since 2001 has a public driller's report. On this page's map, tap a well to open its official report on the state's site, or look it up by location in the TWDB viewer.

How to read these numbers

Figures cover new and replacement domestic (home) wells, from the reports licensed drillers file with the state. Read the full methodology. Download the county table (CSV).

How to cite: TerraFunded Texas Well Atlas, from Texas Water Development Board driller reports (data as of November 9, 2026). https://terrafunded.com/wells

Sources

All counties