Well Drilling Cost Per Foot in 2026

The per-foot rate is the number everyone quotes and almost nobody understands

Ask three drillers for a bid on a 250-foot residential well and you will get three different per-foot rates, three different lists of what that rate covers, and a fourth number at the bottom of the page that you have to back-solve to verify. The headline figure of $25 to $65 per foot is real, but it describes drilling time and the bit and the rig sitting in your yard. It does not describe the casing that holds the bore open, the grouting that seals the casing to the rock, the pump that lifts the water, or the pressure tank that smooths the household supply.

The National Ground Water Association tracks per-foot rates in its biennial Cost of Doing Business survey, the most reliable industry benchmark for these numbers. The 2024 survey put the national median residential drilling rate at $38 per foot, with the 90th percentile (hard-rock, low-volume markets) at $65 per foot and the 10th percentile (sandy soils, competitive markets) at $24. Inflation and fuel surcharges since the survey have pushed both ends up by an estimated 5 to 8 percent, which is why our 2026 working range is $25 to $65 rather than the survey's $24 to $65.

The single biggest variable is the geology your bit is chewing through. A 200-foot well in Florida sand can be drilled in four hours; the same depth through New Hampshire granite is a two-day job and may need a different rig type. That ten-to-one difference in time-on-tool is what the per-foot rate is really pricing. Everything else (casing, pump, permits) is closer to a fixed quantity per well, even if the line items look variable on the invoice.

Per-foot rates by ground type, in plain language

Sand and gravel ($25 to $35 per foot). Unconsolidated, fast to drill, soft on bits. Coastal plains, glacial outwash zones in the Upper Midwest, alluvial valleys in California's Central Valley. A tricone or hammer bit penetrates at 60 to 100 feet per hour in this material. The complication is not the drilling, it is the casing: sand walls collapse instantly when the bit is pulled, so temporary surface casing has to follow the bit down. Expect 100 feet of casing on a 100-foot well in sand, not the 20 feet you would set in solid rock.

Clay and shale ($30 to $45 per foot). Stickier than sand, slower than rock. Common across the Midwest (glacial till over bedrock), Texas Gulf Coast, and Carolinas Piedmont. Mud-rotary rigs handle clay well; bit wear is moderate; the issue is hydration of the clay (it expands, grabs the drill string, raises torque). Penetration drops to 30 to 60 feet per hour. Casing requirements depend on whether the clay sits over a productive aquifer or above bedrock; in the latter case the bedrock interface is where the productive zone begins and casing is set into the rock to seal off the clay zone.

Soft sedimentary rock ($35 to $55 per foot). Limestone, dolomite, sandstone, and weathered shale. Common across the mid-Atlantic, Appalachian basin, central Texas Edwards plateau. Bit life drops; air-rotary rigs are often preferred over mud-rotary because the chip-out is cleaner. Penetration runs 20 to 40 feet per hour. In karst limestone (parts of Florida, Kentucky, central Texas), the productive zone is often a solution cavity, which means the bit can suddenly drop several feet and the driller has to back off and ream. That unpredictability is priced in.

Hard crystalline rock ($45 to $65 per foot). Granite, basalt, gneiss, schist, quartzite. New England, the Adirondacks, Blue Ridge, North Carolina mountains, Cascades, Sierras. The bit options narrow to roller-cone (slow but durable) or DTH (down-the-hole) hammer (faster but expensive air supply). Penetration is 10 to 25 feet per hour. The advantage of hard rock is that once the bore is open, it stays open: casing is set only through the upper weathered zone (typically 20 to 80 feet), then the bore is uncased the rest of the way. That saves on casing cost but does nothing to make the drilling cheaper.

Worked example: a 150-foot well in clay-over-limestone

A representative Midwest residential job. The driller logs 80 feet of clay-over-till, then 70 feet into limestone. The bid is structured as $35 per foot for the first 100 feet (clay rate, partly absorbing the rig mobilisation) and $42 per foot for the remaining 50 feet (limestone rate). Drilling subtotal: $35 x 100 + $42 x 50 = $5,600. Add 100 feet of 6-inch steel casing at $14 per foot ($1,400), grouting at $400, well cap $80, development (4 hours surging) at $400, water-quality test $150, and a county permit at $200. Drilling-and-casing subtotal: $8,230. The submersible pump, drop pipe, wiring and pressure tank package adds another $3,500 to $5,000 depending on horsepower and tank size. Total installed: $11,730 to $13,230.

Worth flagging: the per-foot rate on the invoice will average ($5,600 divided by 150 feet) to $37.30. If the homeowner is comparing this bid to one that quotes $32 per foot but charges casing at $20 per foot and grouting at $800, the second bid is more expensive overall even with the lower headline rate. That is the trap.

Worked example: a 250-foot well in hard rock

A representative New England job. The driller sets 60 feet of 6-inch steel casing through the weathered upper zone, then drills 190 feet of open bore through granite. The drilling rate is $55 per foot for the first 100 feet and $58 per foot for the remaining 150 feet (the rate steps up as drill-string handling slows). Drilling subtotal: $55 x 100 + $58 x 150 = $14,200. Add 60 feet of casing at $16 per foot ($960), grouting at $500, well cap $80, pitless adapter $200, development $500, water test $200, state permit $150. Drilling-and-casing subtotal: $16,790. The submersible pump for a 250-foot well needs at least 1 horsepower and ideally 1.5; that package adds $4,500 to $6,000 with installation. Total installed: $21,290 to $22,790.

If the bore comes in at less than 3 gallons per minute (the typical fitness threshold for a single-family residence), the next step is hydrofracturing at $1,500 to $4,500, not drilling deeper. The math on deepening a hard-rock well is brutal: another 100 feet at $58 per foot is $5,800 and there is no guarantee the new zone will produce more water.

Worked example: a 350-foot well in sand-and-gravel over sandstone

Common pattern in the central Plains. The driller drives 200 feet of 6-inch steel casing through unconsolidated material, then drills 150 feet of open bore through sandstone. The drilling rate is $28 per foot for the cased portion (driving is fast but uses a lot of casing) and $40 per foot for the open sandstone portion. Drilling subtotal: $28 x 200 + $40 x 150 = $11,600. Add 200 feet of casing at $14 per foot ($2,800), grouting at $700, screen at the bottom of the casing $400, cap $80, development $600, water test $200, state permit $250. Drilling-and-casing subtotal: $16,630. The pump package for a 350-foot well typically runs $5,000 to $7,000. Total installed: $21,630 to $23,630.

The headline foot rate on this invoice will be ($11,600 divided by 350 feet) about $33 per foot, which sounds cheap; the casing line ($2,800) is what shifts the cost picture into the middle of the residential range. This is why per-foot quotes for sand-and-gravel wells should always be read alongside the casing quote: more sand means more casing means more cost.

What you actually pay for in a per-foot rate

Per-foot rates absorb six cost categories, in roughly this order of magnitude on a typical residential job. Drilling labour (the operator and one or two helpers) accounts for around 30 percent of the per-foot figure. Equipment depreciation and consumables (bits, drill mud or compressed air, fuel) accounts for another 30 percent. Mobilisation amortisation (the cost of getting the rig to the site and home) is 15 to 20 percent on a small job, less on a deep one. Insurance and overhead is 10 to 15 percent. The remainder is profit margin, typically 10 to 15 percent. None of those categories includes casing, grouting, pump or testing, which is why those have to be on the bid as separate lines.

BLS OEWS data for rotary drill operators (oil and gas, code 47-5071) puts the median hourly wage at around $26 in 2024, with the 90th percentile at $40 and benefits adding roughly 30 percent. Water-well drilling crews tend to pay slightly less (smaller rigs, less hazard pay), but the gap has narrowed since 2022 as oil-and-gas crews compete for the same labour pool. Rural drillers in the Plains and Appalachia report that labour-cost increases are the single largest driver of the 2024-to-2026 rate creep in the survey data.

How to read a per-foot bid without getting burned

A defensible per-foot bid lists each of these line items with a unit cost: drilling (per foot, by geology tier), casing (per foot, by diameter and material), grouting (lump sum or per foot), well cap and pitless adapter (lump sum), development (per hour or lump sum), water-quality test (lump sum), permit (pass-through or markup), pump package (broken into pump + drop pipe + wiring + tank), and mobilisation (separate line or absorbed). If any of those categories is missing or blurred into "and all related work", the bid is not a real bid; it is a sales pitch. Ask for the missing items priced explicitly before you compare totals.

Two contingency clauses that should always be on the bid: a stated rate for casing in excess of an assumed depth (e.g. "casing beyond 60 feet billed at $16/ft"), and a stated rule for dry holes ("if bore yields less than 1 gpm, the homeowner pays only mobilisation and casing-to-date, and may elect to abandon the bore or hydrofracture"). Drillers who refuse to put either of those in writing are signalling that they want flexibility to bill against the unknowns; honest operators put the contingency math in the contract.

Per-foot rate trends since 2020

The NGWA Cost of Doing Business benchmark has moved roughly as follows for the national-median residential drilling rate: $28 per foot in 2020, $32 in 2022, $38 in 2024, and an estimated $40 to $42 in 2026 based on diesel-fuel pass-through and labour-cost reports from the trade press. The 2020-to-2022 jump (about 14 percent) reflected steel and PVC casing inflation and supply-chain delays on bits and drilling mud. The 2022-to-2024 jump (about 19 percent) reflected diesel and labour. The 2024-to-2026 move (5 to 8 percent) has been gentler as fuel prices stabilised, though hard-rock markets in the Northeast saw bigger jumps because rig-availability constraints pushed bids up.

What this means for a homeowner planning a 2026 well: budget at the upper end of the per-foot tier for your geology and add a 10 percent contingency. If bids come in below that, you have negotiating room; if they come in above it, ask the driller to show their fuel-and-steel cost breakdown so you understand what is driving the premium. The USGS Aquifer overview and your state's well-log database can confirm that your assumed depth target is in line with neighbouring wells, which is the best defence against being upsold on depth you do not need.

Cross-references on this site

For a depth-by-depth cost breakdown that uses these per-foot rates, see the cost-by-depth pillar page, plus individual depth deep-dives at 100 ft, 200 ft, 300 ft, 400 ft, 500 ft, 600 ft and 800 ft. For the casing component priced separately above, see the casing cost page. For the bedrock-specific drilling premium, see bedrock well drilling cost. For when to hydrofracture instead of deepening, see well hydrofracturing.