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Well Drilling Cost Estimator
Enter your expected depth, formation type, and casing choice to get a budgeting range for a residential well installation. All figures are based on national data from HomeAdvisor. This is a planning tool, not a quote.
Estimate your well drilling cost
How the estimate is calculated
The estimator applies nationally reported per-foot cost ranges to your entered depth, then adds the standard installation components. Every figure comes from HomeAdvisor's well drilling cost data, which reports a national drilling range of $25 to $65 per foot and notes that harder formations take longer to drill, pushing costs toward the upper end of that range.
| Formation type | Drilling rate used | Why |
|---|---|---|
| Soft soil or sand | $25 to $38/ft | Fastest drilling; sits at the low end of HomeAdvisor's $25-$65/ft national range |
| Mixed soil or clay | $32 to $48/ft | Moderate resistance; mid-low portion of the national range |
| Soft rock or limestone | $42 to $56/ft | Slower drilling; mid-high portion reflecting rock-drilling uplift |
| Hard rock or granite | $52 to $65/ft | Slowest drilling; top of the national range per HomeAdvisor's rock-drilling note |
These tiers are interpretations within the documented national range, not independently published per-formation benchmarks. Your actual drilling rate depends on the specific contractor, local competition, and the exact ground conditions encountered. Use these as order-of-magnitude planning figures, not as a ceiling or floor for negotiations.
Casing, pump, pressure tank, permit, and water testing figures are stated verbatim from HomeAdvisor and applied as fixed add-ons. Water treatment (if needed) can add $1,000 to $15,000 and is not included here.
What formation type do I have?
Formation type is the single biggest variable in drilling cost after depth. If you are not sure what to select, the following regional patterns apply generally, though local geology varies significantly within each region. Check your county well completion records for the most reliable local data.
| Region | Common formation | Suggested selection |
|---|---|---|
| Great Plains and Midwest | Sand, clay, and sedimentary layers; limestone common in TX, KS, MO | Soft soil or mixed soil/clay; limestone areas: soft rock |
| Southeast coastal plain | Sandy and clay soils; shallower water tables in many lowland areas | Soft soil or mixed soil/clay |
| Northeast and New England | Glaciated terrain with variable till over bedrock; granite and gneiss common | Soft rock to hard rock; check local well logs |
| Rocky Mountain and Pacific West | Volcanic, granite, and metamorphic rock prevalent; alluvial valleys softer | Soft rock to hard rock; alluvial valley floors: mixed soil |
| Appalachian region | Shale, limestone, and sandstone; variable fracture systems | Soft rock; harder zones: soft rock to hard rock |
These are general patterns, not guarantees. A local well driller who has worked in your area will know what to expect before they ever turn on the rig, and their quote should reflect that. See our guide on how to hire a licensed well driller for what to ask when getting quotes.
Frequently asked questions
How accurate is this estimator?
It produces a budgeting range based on national averages, not a quote for your property. Actual costs depend on local market rates, what the driller encounters underground, and your local permit fees. The national average for a complete well installation is roughly $3,000 to $9,000 for drilling alone (HomeAdvisor), but total project costs including pump, tank, and testing commonly exceed that range. Always get itemized quotes from at least two licensed local contractors before you commit.
Is PVC or steel casing better?
PVC is less expensive and resists corrosion, making it the common choice in many regions. Steel casing (galvanized or stainless) is stronger and required in some states or geological conditions. Your driller and your state's well construction standards determine which is appropriate. Some jurisdictions specify minimum casing material in their regulations; your local health department or water authority can confirm what is required in your area.
What is not included in this estimate?
The estimator covers drilling, casing, a permit, and optionally the pump and pressure tank. It does not include water treatment (if your water quality tests show a problem, treatment systems can add $1,000 to $15,000 or more), electrical wiring to the pump, pressure lines to the house, or site restoration. Ask your contractor for a complete itemized quote covering all of these.
How deep does a residential well typically need to be?
It depends on where the water table sits in your area. In some parts of the country, water is accessible at 100 to 150 feet; in others, drillers commonly go 400 feet or more. Your county health department or a local driller can tell you the typical range for your area. Many state well programs also publish completion reports showing the depths and formations that local drillers have reported. We've aggregated this into county-by-county tables for Alabama, California, Florida, Indiana, Kentucky, Michigan, New York, Ohio, Pennsylvania, Tennessee and Texas.
Will the driller hit water at the depth I entered?
Not necessarily. Groundwater depth can vary across a single property. Because depth is only confirmed once the rig is on site, any quote before drilling starts is an estimate with a contingency for going deeper. Always ask your contractor what happens to the price if they have to drill significantly deeper than expected, and get that answer in writing before you sign.
Ready to get a real quote?
Tell us about your project and we'll connect you with a licensed well driller serving your area.
Request a Quote From a Local DrillerFor more background on cost factors, see the Well Drilling Cost Guide. For what to ask before you sign a contract, see How to Hire a Licensed Well Driller.