How Much Does it Cost to Dig a Well?

Updated on August 2, 2026 | Written by Alec Pow
This article was researched using 4 sources. See our methodology and corrections policy.

Installing a complete residential water well typically costs approximately $6,000 to $25,000. A relatively straightforward well with accessible groundwater, ordinary casing requirements, a standard submersible pump, and a short connection to the house may remain near the lower or middle part of that range. A deep well drilled through hard rock, a low-yield site, difficult equipment access, extensive trenching, or complicated water treatment can raise the project to $30,000 to $50,000 or more.

The price to drill the hole is only one part of the investment. A functioning household system may also require casing, grout, a sanitary cap, well development, a yield test, a pump, drop pipe, electrical controls, a pressure tank, a pitless adapter, trenching, plumbing, permits, laboratory testing, and restoration of disturbed ground. Water treatment should be added only after testing shows what the water actually contains.

Article Highlights

• Completed residential well: $6,000 to $25,000 (at $30 per hour, earning that amount would take about 1.2 to 4.8 months of full-time work, before taxes) in many situations
• Difficult deep or low-yield project: $30,000 to $50,000+
• Common drilling and installation benchmark: $25 to $65 per foot
• Pump, pressure tank, controls, and installation: often $2,000 to $6,000+
• Trenching, electrical work, and house connection: commonly $1,000 to $5,000+
• Water testing: from under $100 for limited local testing to several hundred dollars for broader panels
• Treatment: $0 when unnecessary to more than $10,000 for complex contamination or water-quality problems
• A quoted per-foot price may not include a complete working water system.

How Much Does It Cost to Dig a Well?

Project	Estimated completed cost	Typical scope
Shallow, straightforward household well	$6,000 to $12,000 (about 5 to 10 full-time workweeks at $30 per hour)	Accessible site, modest depth, standard pump, short utility run
Typical drilled residential well	$10,000 to $25,000	Moderate depth, casing, pump, pressure tank, testing, and house connection
Deep bedrock or difficult-access well	$20,000 to $40,000+	Greater depth, slower drilling, more casing, larger mobilization cost
Low-yield or treatment-heavy project	$30,000 to $50,000+	Storage, booster pump, hydrofracturing, relocation, or advanced treatment

Current national estimates often place residential drilling and installation near $25 to $65 per foot. That benchmark is useful for early budgeting but cannot replace a local quote. A contractor charging $40 per foot for a 200-foot well may be quoting $8,000 for the bore and basic construction, not necessarily the completed pump system and connection to the home.

What a Per-Foot Quote Actually Includes

Well bids are difficult to compare because contractors do not all include the same work in the advertised per-foot rate. One quote may cover drilling only. Another may include casing and grout through unstable material. A third may be a turnkey contract covering the pump, pressure tank, trenching, electrical work, permits, testing, and final connection.

A detailed quote should state the drilling method, minimum charge, included depth, additional price per foot, bore diameter, casing material, amount of casing included, grout, screen where required, well development, yield testing, sanitary cap, and cleanup. It should also explain what happens when the driller encounters deeper groundwater, unstable formations, hard rock, poor yield, or a dry hole.

The WellOwner.org guide explains that casing maintains the well opening, while grout seals the space around it and helps prevent contaminants from moving down the outside of the casing. These are not decorative upgrades. They are core parts of sanitary well construction.

Depth, Geology

Depth has a major effect on cost because it increases rig time, drill-pipe handling, casing, pump lift, electrical requirements, and the length of drop pipe and cable. It does not, however, guarantee a strong water supply. Groundwater occurs in aquifers, fractures, and water-bearing sediments rather than at one universal depth. A productive 80-foot well may be possible in one county, while a property a few states away may require 400 feet of drilling.

Local geology can be just as important as depth. Hard bedrock may slow drilling and wear expensive bits, while loose formations can require more casing, screens, gravel pack, or drilling fluid to prevent collapse. Restricted access can force the contractor to use smaller equipment, construct a temporary road, protect landscaping, or spend additional time positioning the rig.

The best early evidence usually comes from nearby well records. The U.S. Geological Survey notes that a driller’s log records depth, yield, and the materials encountered during construction. State or county well databases may show how deep neighboring wells are, what formations they penetrate, and what yields were reported. These records cannot guarantee the outcome on a particular lot, but they are far more useful than assuming that 100 or 200 feet will be sufficient everywhere.

A contract must also address failure. Homeowners may still owe mobilization and drilling charges when a bore produces inadequate water. Possible next steps include drilling deeper, moving to another location, rehabilitating or hydrofracturing a bedrock well where lawful, or adding storage that slowly collects water from a low-yield source.

Pump, Pressure Tank

After the well is drilled, water still needs to reach the plumbing at usable pressure. A modern household system commonly includes a submersible pump, drop pipe, electrical cable, check valves, controls, a pitless adapter in cold climates, a pressure switch, and a pressure tank. Pump size should be based on well depth, pumping water level, household demand, pipe losses, and tested yield rather than simply choosing the highest horsepower available.

A basic pump-and-pressure installation may cost around $2,000 to $6,000 (about 1.7 to 5 full-time workweeks at $30 per hour), while deep settings, constant-pressure systems, large tanks, unusual electrical work, or high-capacity needs can cost more. The distance between the well and the house adds trenching, underground water pipe, electrical cable, excavation, backfilling, foundation penetration, and connection to the existing plumbing. A long run across rock, pavement, or difficult terrain can add several thousand dollars.

The well, pump, and storage system should be designed together. Penn State Extension’s guidance on low-yield wells explains how a reservoir and separate pressure pump can allow a slow-producing well to meet periods of higher household demand. That solution adds cost but may be more practical than repeatedly drilling deeper.

A Straightforward 100-Foot Well

Consider a property with accessible sandy and gravelly formations, nearby wells around 100 feet deep, and a proposed well location close to the house:

• Drilling, casing, grout, and completion: $4,500
• Submersible pump, pressure tank, and controls: $2,500
• Trenching, electrical cable, and plumbing connection: $1,500
• Permit, inspection, and basic laboratory testing: $500
• Site cleanup and contingency: $1,000

The completed cost is approximately $10,000. A cheaper drilling quote might reduce the total, but a long utility trench or more extensive casing could easily move the project above $12,000.

A Typical 200-Foot Household Well

A 200-foot well in mixed formations with a deeper pump setting and a 100-foot connection to the house might look like this:

• Drilling and well construction: $9,000
• Pump, drop pipe, wiring, pressure tank, and controls: $4,000
• Trenching and house connection: $3,000
• Permit, yield test, water tests, and inspection: $800
• Grading, cleanup, and contingency: $2,000

The total is approximately $18,800. This is a better national planning example than claiming that every completed household well costs $10,000 to $15,000. Small changes in depth, casing, access, and utility distance can move the total by thousands of dollars.

A 400-Foot Rock Well

A difficult site may require 400 feet of drilling through bedrock, substantial casing, a deep pump setting, and treatment for naturally occurring minerals:

• Drilling, casing, and well development: $22,000
• Deep-well pump and pressure system: $6,000
• Trenching, electrical work, and plumbing: $4,000
• Testing and water treatment: $6,500
• Permits, cleanup, and contingency: $4,000

The resulting project costs approximately $42,500. If the first bore has inadequate yield, the owner could face additional drilling, hydrofracturing, a storage system, or abandonment costs.

Water Testing and Treatment Costs

A new well should be disinfected and tested before its water is relied upon for drinking. Private wells are not monitored like public water systems, leaving the owner responsible for water quality. The EPA reports that approximately one in five private wells in a USGS study contained at least one contaminant above a human-health benchmark.

The CDC and EPA recommend testing at least annually for total coliform bacteria, nitrates, total dissolved solids, and pH. Additional testing should reflect local geology and land use, including possible arsenic, uranium or radon, fluoride, iron, manganese, pesticides, volatile organic compounds, PFAS, fuel contamination, or nearby septic and agricultural activity. The official CDC well-testing guidance also recommends retesting after flooding, repairs, or a change in taste, odor, or appearance.

Limited bacteria or nitrate testing may cost less than $100 through some local programs, while broader laboratory packages commonly cost $100 to $500+. Specialized contaminant panels can cost more. Treatment should be selected only after a certified laboratory identifies the problem. A sediment cartridge, softener, iron filter, neutralizer, UV unit, arsenic system, reverse-osmosis unit, or chlorination system each solves a different issue.

A well requiring no treatment may add nothing beyond testing. A basic professionally installed treatment system may cost $1,000 to $4,000, while several treatment stages can exceed $5,000 to $10,000. Readers comparing treatment options can review the cost of Kinetico water softeners, LifeSource water systems, and Culligan water delivery.

Permits, Setbacks, and Location

Well construction is regulated primarily through state and local rules. Depending on the jurisdiction, a project may require a permit, site plan, licensed contractor, inspection, construction record, laboratory result, or water-right review. Fees may be modest in one county and much higher where environmental review or multiple agencies are involved.

The cheapest drilling location is not always legal. Wells must be separated from septic tanks, drain fields, sewers, fuel storage, livestock areas, chemical storage, surface water, property boundaries, and other contamination sources. California’s well standards, for example, require adequate horizontal distance from known or potential pollutants, while Minnesota publishes detailed isolation distances for wells and septic components.

Placement also needs to account for future access. A drilling or pump-service rig may need to return decades later. Building an addition, driveway, garage, or patio over the access route can turn a routine pump replacement into a difficult excavation project.

Ownership Costs, Maintenance

A properly constructed well does not normally require $300 to $1,500 of contractor maintenance every year. Routine ownership commonly includes annual water testing, checking the cap and wellhead, keeping contaminants away from the site, and servicing treatment equipment according to its manufacturer. The pump, pressure tank, electrical controls, and treatment components wear on separate schedules and should be handled through a repair reserve rather than treated as guaranteed annual expenses.

Electricity for an ordinary household pump is generally a modest operating cost, not automatically $100 or more each month. The amount depends on depth, pressure, pump efficiency, household consumption, irrigation use, and local utility rates. A sudden increase in power use may indicate a leak, waterlogged pressure tank, failing check valve, worn pump, or control problem.

The well bore and casing may remain serviceable for decades, while pumps and pressure tanks may need replacement much sooner. Owners should keep the construction log, laboratory reports, contractor invoices, pump model, depth setting, and treatment records. The USGS describes the well record and water analysis as potentially as important to a rural homeowner as the property deed.

How to Compare Quotes

Obtain at least three detailed local bids, but do not choose solely by the lowest per-foot number. Each proposal should identify:

• Mobilization and minimum charges
• Drilling method and price per foot
• Bore and casing diameter
• Casing material and included length
• Grout, screen, gravel pack, cap, and well development
• Yield testing and water-level measurements
• Pump, pressure tank, controls, pipe, and electrical cable
• Trenching and final plumbing connection
• Permits, testing, inspection, and cleanup
• Warranty and expected project schedule
• Charges for extra casing, difficult rock, or excessive depth
• Payment terms if the well is dry or has inadequate yield

Ask the contractor for recent well depths and results in the immediate area, not merely a statewide average. Verify licensing where required, insurance, warranty service, and responsibility for filing the final construction record. A complete written scope is the best protection against a seemingly inexpensive bid becoming an unfinished system.

Answers to Common Questions

How much does it cost to drill a 200-foot well?

A 200-foot well may cost approximately $8,000 to $15,000 for drilling and basic construction, while a completed household system can reach $15,000 to $25,000+ after the pump, tank, trenching, electrical work, testing, and permits are included.

How much does well drilling cost per foot?

A broad national planning range is approximately $25 to $65 per foot. Some bids cover only drilling, while others include casing or more complete construction, so the written scope matters more than the headline rate.

Is a 100-foot well deep enough?

Possibly, but there is no universal adequate depth. Groundwater level, aquifer yield, seasonal changes, local geology, and nearby well records determine whether 100 feet is sufficient.

Does a deeper well provide cleaner water?

Not necessarily. Deeper wells may be less vulnerable to some surface contamination but can contain naturally occurring arsenic, minerals, salinity, radionuclides, iron, manganese, or hardness. Every new well should be tested.

How long does it take to install a well?

The bore itself may be drilled in a day or several days, but permitting, setup, casing, development, yield testing, pump installation, trenching, electrical work, inspections, and laboratory turnaround can extend the full project over days or weeks.

What happens if the driller does not find enough water?

The owner may need to pay for drilling already completed and then consider greater depth, a second location, well rehabilitation, hydrofracturing where permitted, or a storage-and-booster system. The contract should explain these costs before work begins.

How often should private well water be tested?

The CDC and EPA recommend annual testing for total coliform bacteria, nitrates, total dissolved solids, and pH, with additional contaminants selected according to local risks.