Sequim, WA Well
Drilling Cost
Avg. Depth
120 ft
Cost / Foot
$28–$62
Total Project
$5,040
vs. National Avg
33% below avg.
the $7,500 national avg.
Sequim, WA Well Drilling Cost by Depth
| Well Depth | Drilling Only | Complete System | Est. Total |
|---|---|---|---|
| 100 ft | $2,800–$6,200 | $7,600–$11,000 | $9,000 |
| 150 ft | $4,200–$9,300 | $9,400–$14,500 | $11,500 |
| 200 ft | $5,600–$12,400 | $11,200–$18,000 | $14,000 |
| 300 ft | $8,400–$18,600 | $14,800–$25,000 | $19,000 |
| 400 ft | $11,200–$24,800 | $18,400–$32,000 | $24,000 |
| 500 ft | $14,000–$31,000 | $22,000–$39,000 | $29,000 |
*Costs are estimates based on Sequim area rates for 2026. Complete system includes casing, pump, pressure tank, electrical, and permits. Actual prices vary by property.
Well Drilling in Sequim, WA
Sequim-Dungeness Valley with glacial outwash and alluvial deposits; Olympic Mountain rain shadow creates drier conditions than typical western WA
The average residential well in Sequim is 120 feet deep and costs approximately $5,040 for a complete system including drilling, casing, pump, and pressure tank. Drilling rates in the area range from $28 to $62 per foot, which is 33% below the national average of $7,500.
The primary aquifer serving the Sequim area is the Sequim-Dungeness Valley / Glacial Drift Aquifer. Well depths can vary significantly depending on your specific property location and proximity to the aquifer.
Permits & Regulations
Clallam County well permit; WA Ecology; $150-$250; water supply concerns in rain shadow area
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Nearby Areas
Also serving: Port Angeles , Carlsborg, Dungeness, Blyn, Port Townsend
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