Tennessee Well Data › Williamson County
Williamson County, Tennessee: well depth, water level & drilling cost
✓ 8,295 TDEC records · verified 2026-09-28
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How deep are wells in Williamson County, Tennessee?
The median drilled well depth in Williamson County is 200 ft, based on 8,145 wells with recorded depths in the state TDEC database. Half of all wells fall between 140 ft and 300 ft; 90% are shallower than 400 ft. Wells drilled since 2016 have a median depth of 260 ft.
How much does it cost to drill a well in Williamson County?
Applying published per-foot rates to the local median depth of 260 ft: drilling and casing alone typically runs $6,500–$16,900; a complete system including pump, pressure tank, and hookup typically runs $15,600–$26,000. 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 50 ft below ground surface (middle half of wells: 30 ft–80 ft), from 4,197 measurements.
How much water do wells in Williamson County produce?
The median tested yield is 6 gpm (middle half: 2 gpm–15 gpm), from 5,617 pump tests. A typical household needs 5–10 gpm.
Drilled depth distribution
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Well records by ZIP code in Williamson County
Median depth, water level, and yield for each ZIP code with recorded wells.
- Fairview (37062) — 1,414 wells, median 160 ft
- Franklin (37069) — 689 wells, median 250 ft
- Franklin (37068) — 552 wells, median 250 ft
- Brentwood (37027) — 552 wells, median 250 ft
- College Grove (37046) — 517 wells, median 280 ft
- Franklin (37067) — 512 wells, median 240 ft
- Arrington (37014) — 388 wells, median 268 ft
- Thompsons Station (37179) — 356 wells, median 276 ft
- Nolensville (37135) — 332 wells, median 250 ft
- Franklin (37065) — 254 wells, median 225 ft
- Brentwood (37024) — 252 wells, median 240 ft
- Franklin (37064) — 155 wells, median 200 ft
Method: medians computed from TDEC records (TDEC reported water wells; depths 0–5,000 ft). Cost estimate applies published per-foot ranges (checked 2026-06-11) to the local median depth — full methodology & sources.