Texas Water Well Reports › Williamson County
Williamson County, Texas: well depth, water level & drilling cost
✓ 3,401 TDLR SDR records · verified 2026-06-27
How deep are wells in Williamson County, Texas?
The median drilled well depth in Williamson County is 560 ft, based on 3,396 wells with recorded depths in the state TDLR SDR database. Half of all wells fall between 462 ft and 742 ft; 90% are shallower than 860 ft. Wells drilled since 2016 have a median depth of 580 ft.
How much does it cost to drill a well in Williamson County?
Applying published per-foot rates to the local median depth of 580 ft: drilling and casing alone typically runs $14,500–$37,700; a complete system including pump, pressure tank, and hookup typically runs $34,800–$58,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Williamson County?
The median static water level is 350 ft below ground surface (middle half of wells: 211 ft–433 ft), from 2,758 measurements.
How much water do wells in Williamson County produce?
The median tested yield is 30 gpm (middle half: 20 gpm–50 gpm), from 2,865 pump tests. A typical household needs 5–10 gpm.
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Drilled depth distribution
Who drills wells in Williamson County?
Companies by number of water wells completed in this county since 2016, per filed driller reports (SDR).
| Driller | Wells since 2016 |
|---|---|
| TOM ARNOLD DRILLING | 319 |
| Associated Drilling Inc | 242 |
| Alpine water well service | 184 |
| Bee Cave Drilling, Inc. | 143 |
| Western Water Wells | 115 |
| Hill Country Water Well | 67 |
| HILL COUNTRY WATER WELL | 67 |
| Tom Lovelace Water Well Service | 63 |
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Median depth, water level, and yield for each ZIP code with recorded wells.
- Liberty Hill (78642) — 924 wells, median 520 ft
- Florence (76527) — 397 wells, median 720 ft
- Georgetown (78626) — 313 wells, median 440 ft
- Georgetown (78628) — 301 wells, median 750 ft
- Jarrell (76537) — 197 wells, median 640 ft
- Georgetown (78633) — 162 wells, median 755 ft
- Taylor (76574) — 113 wells, median 37 ft
- Round Rock (78664) — 100 wells, median 495 ft
- Cedar Park (78613) — 88 wells, median 810 ft
- Granger (76530) — 74 wells, median 666 ft
- Hutto (78634) — 59 wells, median 690 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.