Texas Water Well Reports › Williamson County › Round Rock (78664)
Round Rock, TX (78664): well depth, water level & drilling cost
✓ 106 TDLR SDR records · Williamson County
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How deep are wells in Round Rock (78664), Texas?
The median drilled well depth in Round Rock (78664) is 490 ft, based on 106 wells with recorded depths in the state TDLR SDR database. Half fall between 363 ft and 599 ft; 90% are shallower than 723 ft.
How much does it cost to drill a well in Round Rock (78664)?
Applying published per-foot rates to the local median depth of 490 ft: drilling and casing alone typically runs $12,250–$31,850; a complete system including pump, pressure tank, and hookup typically runs $29,400–$49,000. Actual quotes depend on site access, geology, and casing requirements.
What is the static water level in Round Rock (78664)?
The median static water level is 258 ft below ground surface (middle half of wells: 177 ft–335 ft), from 93 measurements.
Drilled depth distribution
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Part of Williamson County well records.
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), grouped by ZIP from the recorded address. Cost estimate applies published per-foot ranges to the local median depth — full methodology & sources.