⟁ Texas Water Well Reports field records · 2026 survey

Texas Water Well Reports › Williamson County › Round Rock (78664)

Round Rock, TX (78664): well depth, water level & drilling cost

✓ 100 TDLR SDR records · Williamson County

495 ftmedian well depth
365 ft–601 fttypical depth range
258 ftmedian static water level
50 gpmmedian yield (88 tests)

How deep are wells in Round Rock (78664), Texas?

The median drilled well depth in Round Rock (78664) is 495 ft, based on 100 wells with recorded depths in the state TDLR SDR database. Half fall between 365 ft and 601 ft; 90% are shallower than 732 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 565 ft: drilling and casing alone typically runs $14,125–$36,725; a complete system including pump, pressure tank, and hookup typically runs $33,900–$56,500. 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: 182 ft–340 ft), from 87 measurements.

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Drilled depth distribution

0–50 ft 2 50–100 ft 0 100–150 ft 0 150–200 ft 4 200–300 ft 9 300–400 ft 15 400–600 ft 43 600+ ft 27
Looking at a specific property in Round Rock (78664)?

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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.