The average cost to drill a residential water well is $3,000 to $9,000, with most homeowners paying around $5,500. That figure covers drilling, casing, and basic electrical components, but the full price of a working well system often lands higher once you factor in the pump, pressure tank, water testing, and permits.
Drilling Costs Per Foot
Residential well drilling runs $25 to $65 per foot, and most homes need a well between 50 and 200 feet deep. Your depth depends on where the water table sits beneath your property, which varies enormously by region and even by lot. A well in a coastal area with a shallow water table might only need 50 to 80 feet, while properties in rocky or arid terrain can require 200 feet or more. That depth difference alone can swing your drilling bill by thousands of dollars.
The type of rock and soil your driller encounters matters too. Soft sediment is faster and cheaper to drill through than hard granite or limestone. If a driller hits unexpected rock layers, the job takes longer, and the per-foot cost can climb toward the higher end of that range. Most drilling companies will give you an estimate based on local geological data and nearby well logs, but the final depth is never guaranteed until the drill hits adequate water.
Pump and Pressure Tank Costs
A well without a pump is just a hole in the ground. The pump is what moves water from underground into your home, and it’s a significant part of the total budget. Submersible pumps, which sit deep inside the well itself, cost $400 to $2,000 for the unit alone. Jet pumps, which stay above ground and work best for shallower wells, run $300 to $1,200. Once you include professional installation, expect total pump costs of $3,000 or more.
You’ll also need a pressure tank, which stores water under pressure so your pump doesn’t cycle on every time you open a faucet. A standard residential pressure tank with installation costs $800 to $1,500. Smaller tanks in the 20 to 30 gallon range start around $450 to $1,000 installed, while larger tanks of 80 gallons or more can reach $2,300. Most homes do fine with a 40 to 60 gallon tank, which typically falls in the $600 to $1,600 range.
Three types of pressure tanks are available. Bladder tanks use a replaceable rubber bladder to separate water from air and are the most common choice for residential systems. Diaphragm tanks cost more upfront but tend to last longer. Air-over-water tanks are the cheapest option, though they need more frequent maintenance because air gradually dissolves into the water.
Electrical and Wiring Costs
Your well pump needs dedicated electrical power, and running that wiring adds $300 to $1,500 to the project depending on how far the well sits from your electrical panel. A new wiring run alone costs $500 to $1,500. You’ll also need a control box to protect the pump from power surges and electrical faults, which runs $200 to $500. If your existing electrical panel doesn’t have capacity for a dedicated well circuit, upgrades on that end add to the bill.
Permits and Administrative Fees
Nearly every jurisdiction requires a permit before drilling a new well. Permit costs vary widely by location. In Wake County, North Carolina, for example, a new well permit costs $800 and includes a contamination source review, inspections, and water testing by the county. Other areas charge far less, sometimes just $100 to $300 for a basic drilling permit. Call your county health department or water resources office to find out what’s required locally, because drilling without a permit can result in fines and complications when you eventually sell the property.
Water Quality Testing
Once your well is drilled, you’ll need the water tested before using it. A basic bacteria test (checking for coliform, which indicates contamination from surface water or sewage) is the minimum, but a comprehensive first-time test is a better idea. Wake County’s recommended package for new well owners tests for bacteria, inorganic chemicals like arsenic, lead, nitrates, and mercury, plus volatile organic compounds and pesticides. That package costs $175 plus a $50 collection fee. A more limited inorganic panel runs about $50 plus collection.
Even if your county doesn’t require extensive testing, it’s worth paying for a full panel on a new well. Contaminants like arsenic and lead are odorless and tasteless, and knowing your baseline water quality helps you decide whether you need a filtration system, a water softener, or both.
Total Cost for a Complete Well System
When you add everything together, the full cost of a new residential well system breaks down roughly like this:
- Drilling and casing: $3,000 to $9,000
- Pump (with installation): $3,000+
- Pressure tank (with installation): $800 to $1,500
- Electrical work: $300 to $1,500
- Permits: $100 to $800
- Water testing: $50 to $225
For a typical residential project, total costs often land in the $7,000 to $15,000 range. A shallow well in easy-to-drill soil with a short electrical run could come in under that. A deep well in rocky terrain that requires a high-capacity pump can push well past it. Getting quotes from two or three licensed drillers in your area will give you the most accurate picture, since local geology is the single biggest variable.
Ongoing Maintenance Costs
A well isn’t a set-it-and-forget-it system. Annual inspections by a licensed well professional are recommended at minimum. A typical checkup includes a flow test, visual inspection of the wellhead and components, a basic water quality test for bacteria and nitrates, a check on valves and electrical connections, and verification that the pressure tank is holding properly. Budget $100 to $300 per year for this kind of routine service.
Well pumps last 8 to 15 years on average, and pressure tanks have a similar lifespan, so you’ll eventually face replacement costs on both. Catching small problems early through annual inspections is significantly cheaper than an emergency repair call when your water stops flowing unexpectedly. A well system that’s properly maintained can provide reliable water for 20 to 30 years or longer before the well itself needs attention.