Texas Water Well Reports › Llano County

Llano County, Texas: well depth, water level & drilling cost

Name: Llano County, Texas water well statistics
Creator: Texas Water Well Reports
License: https://creativecommons.org/licenses/by/4.0/

✓ 3,839 TDLR SDR records · verified 2026-07-30

160 ftmedian well depth

105 ft–205 fttypical depth range

34 ftmedian static water level

10 gpmmedian yield (2,776 tests)

How deep are wells in Llano County, Texas?

The median drilled well depth in Llano County is 160 ft, based on 3,838 wells with recorded depths in the state TDLR SDR database. Half of all wells fall between 105 ft and 205 ft; 90% are shallower than 280 ft. Wells drilled since 2016 have a median depth of 170 ft.

How much does it cost to drill a well in Llano County?

Applying published per-foot rates to the local median depth of 170 ft: drilling and casing alone typically runs $4,250–$11,050; a complete system including pump, pressure tank, and hookup typically runs $10,200–$17,000. Actual quotes depend on site access, geology, and casing requirements.

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What is the static water level in Llano County?

The median static water level is 34 ft below ground surface (middle half of wells: 23 ft–55 ft), from 2,391 measurements.

How much water do wells in Llano County produce?

The median tested yield is 10 gpm (middle half: 4 gpm–24 gpm), from 2,776 pump tests. A typical household needs 5–10 gpm.

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Drilled depth distribution

0–50 ft 88 50–100 ft 454 100–150 ft 1,225 150–200 ft 601 200–300 ft 1,123 300–400 ft 244 400–600 ft 82 600+ ft 21

Who drills wells in Llano County?

Companies by number of water wells completed in this county since 2016, per filed driller reports (SDR).

Driller	Wells since 2016
Magill Drilling & Water Well Service, LLC	506
Walden Drilling Inc	506
Apex Drilling, Inc.	155
Virdell Drilling Inc.	106
Bee Cave Drilling, Inc.	101
Magill Drilling & Water Well Service	81
L & L Drilling Co.	33
Magill Drilling	30

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Well records by ZIP code in Llano County

Median depth, water level, and yield for each ZIP code with recorded wells.

Llano (78643) — 1,065 wells, median 180 ft
Kingsland (78639) — 477 wells, median 120 ft
Buchanan Dam (78609) — 149 wells, median 153 ft
Tow (78672) — 97 wells, median 140 ft
Valley Spring (76885) — 73 wells, median 180 ft
Horseshoe Bay (78657) — 68 wells, median 169 ft

Method: medians computed from TDLR SDR records (water-supply wells only (domestic, irrigation, stock, public supply, industrial) — monitoring, environmental borings, test holes, injection and geothermal excluded; depths 0–5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.