How deep are water wells in Knox County, Texas?

Half of the home water wells drilled in Knox County in the last 10 years are between 52 and 55 feet deep. The median is 52 feet, based on 49 driller reports filed with the state. Drillers measured the water standing a median 32 feet below the surface (45 wells). That is shallower 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)
52 to 55 ft
Median depth
52 feet
Deepest 10% are past
61 feet
Water level (median)
32 feet (45 wells)
Yield (median)
57 gallons per minute (13% pump-tested)
Wells used
49
Period
Last 10 years
Latest report
July 16, 2026
Depth rank
242 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 509
50 to 10040

Median depth by year

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

YearMedian (ft)Wells
20034914
20045010
20055210
20125122
20135624
20145621
20155515

Are wells in Knox County getting deeper?

Knox 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 Seymour, a major aquifer, at the surface (outcrop) across 36% of the county.

What a well costs in Knox County

At the median depth for Knox County (52 feet), a complete home well (drilling, casing, pump, pressure tank and hookup at the well) would cost roughly $4,000 to $9,500, 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 Knox County?

The middle half of home wells drilled there are 52 to 55 feet deep; one in ten goes past 61 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 Knox County?

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 ($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 Knox County?

Drillers reported a median of 57 gallons per minute (45 wells). Only 13% of those figures come from a pump test; the rest are the driller's estimate, so treat them as a guide.

Are wells in Knox County getting deeper?

Knox 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