💧 Water Well Drilling Guide

Reference for homeowners, buyers, and contractors — well costs by state, casing specs, pump sizing, yield, and water treatment.

All information is general reference — always verify with a licensed well contractor in your area

💰Cost by State
Cost by State
Well Drilling Cost in Texas
Well drilling costs in Texas vary significantly by region. The Hill Country, West Texas, and the Panhandle all have different geology that affects both depth required and cost per foot.
Average Total Cost: $5,500 – $12,000Cost Per Foot: $25 – $65
Cost by State
Well Drilling Cost in Florida
Florida has some of the shallowest wells in the country thanks to the Floridan Aquifer System — one of the most productive in the world. Most residential wells in North and Central Florida reach usable water within 100–200 feet.
Average Total Cost: $3,000 – $8,000Cost Per Foot: $15 – $40
Cost by State
Well Drilling Cost in Georgia
Georgia well costs vary significantly between the hard crystalline rock of North Georgia and the softer sediments of South Georgia. Most residential wells run $8,000–$15,000 total installed.
Average Total Cost: $6,000 – $15,000Cost Per Foot: $20 – $55
Cost by State
Well Drilling Cost in North Carolina
North Carolina has two distinct geological regions with very different well characteristics — the Piedmont crystalline rock belt and the Coastal Plain sedimentary formations.
Average Total Cost: $7,000 – $16,000Cost Per Foot: $22 – $55
Cost by State
Well Drilling Cost in Virginia
Virginia well costs are heavily influenced by the Blue Ridge and Piedmont crystalline rock in the west versus the Coastal Plain sediments in the east. Most residential wells run $8,000–$18,000 total.
Average Total Cost: $8,000 – $18,000Cost Per Foot: $25 – $60
Cost by State
Well Drilling Cost in Pennsylvania
Pennsylvania sits on a mix of limestone valleys and crystalline rock ridges. The geology changes dramatically county by county, making PA one of the most variable states for well depth and cost.
Average Total Cost: $8,000 – $18,000Cost Per Foot: $25 – $60
Cost by State
Well Drilling Cost in Ohio
Ohio has productive glacial aquifers across much of the state, making it one of the more affordable states for well drilling. Most residential wells reach water within 100–250 feet.
Average Total Cost: $6,000 – $14,000Cost Per Foot: $18 – $45
Cost by State
Well Drilling Cost in Tennessee
Tennessee sits across several distinct geological zones — the Blue Ridge in the east, the Valley and Ridge limestone belt, the Cumberland Plateau, and the West Tennessee Coastal Plain. Each has different drilling costs.
Average Total Cost: $7,000 – $16,000Cost Per Foot: $22 – $55
Cost by State
Well Drilling Cost in Michigan
Michigan has abundant groundwater resources from its glacial geology and proximity to the Great Lakes. Most residential wells reach water within 100–250 feet at moderate cost.
Average Total Cost: $6,000 – $13,000Cost Per Foot: $18 – $45
Cost by State
Well Drilling Cost in Indiana
Indiana has excellent groundwater resources from thick glacial deposits across most of the state. Wells are generally shallow and affordable compared to rocky states.
Average Total Cost: $5,500 – $12,000Cost Per Foot: $18 – $40
Cost by State
Well Drilling Cost in Illinois
Illinois has two primary aquifer systems — shallow glacial drift aquifers across much of the state, and deep Cambrian-Ordovician sandstone aquifers used in northern Illinois. Costs and depths vary accordingly.
Average Total Cost: $6,000 – $15,000Cost Per Foot: $20 – $50
Cost by State
Well Drilling Cost in Missouri
Missouri is split between the Ozark Plateau in the south (limestone karst with excellent springs and wells) and glaciated plains in the north. Both regions have good groundwater but different drilling characteristics.
Average Total Cost: $6,500 – $14,000Cost Per Foot: $22 – $50
Cost by State
Well Drilling Cost in Arkansas
Arkansas has distinct geological regions — the Ozark and Ouachita mountains in the north and west, and the Mississippi Alluvial Plain (Delta) in the east. Each has very different well characteristics.
Average Total Cost: $6,000 – $13,000Cost Per Foot: $20 – $48
Cost by State
Well Drilling Cost in Kentucky
Kentucky sits on extensive limestone formations that create productive karst aquifers across the Bluegrass and Pennyroyal regions, while eastern Kentucky coal country presents different drilling challenges.
Average Total Cost: $7,000 – $15,000Cost Per Foot: $22 – $52
Cost by State
Well Drilling Cost in West Virginia
West Virginia is almost entirely Appalachian mountain terrain — sandstone, shale, and coal measures dominate. Wells tend to run deeper and are more expensive than neighboring Ohio and Kentucky.
Average Total Cost: $9,000 – $18,000Cost Per Foot: $28 – $58
Cost by State
Well Drilling Cost in Oklahoma
Oklahoma has diverse groundwater resources — productive alluvial aquifers along major rivers, the High Plains (Ogallala) aquifer in the Panhandle, and limestone aquifers in the south. Costs vary widely.
Average Total Cost: $6,000 – $14,000Cost Per Foot: $22 – $50
Cost by State
Well Drilling Cost in Minnesota
Minnesota has abundant groundwater from thick glacial deposits across much of the state. The Twin Cities metropolitan area has deep sandstone aquifers while greater Minnesota typically has shallower glacial wells.
Average Total Cost: $7,000 – $15,000Cost Per Foot: $22 – $50
Cost by State
Well Drilling Cost in Wisconsin
Wisconsin has excellent groundwater from multiple aquifer systems — the deep Cambrian sandstone (used across much of the state), productive glacial drift, and limestone/dolomite in the eastern counties.
Average Total Cost: $7,000 – $16,000Cost Per Foot: $22 – $52
Cost by State
Well Drilling Cost in Colorado
Colorado well drilling is heavily regulated and often expensive — particularly on the Front Range where water rights are complex and depths can be extreme. Rural eastern Colorado plains have deeper but more accessible aquifers.
Average Total Cost: $10,000 – $25,000Cost Per Foot: $30 – $70
Cost by State
Well Drilling Cost in Arizona
Arizona well drilling is expensive — deep water tables, hard desert rock, and complex water regulations under Active Management Areas (AMAs) make Arizona one of the most challenging states for private wells.
Average Total Cost: $15,000 – $40,000+Cost Per Foot: $35 – $80
Cost by State
Well Drilling Cost in New Mexico
New Mexico is an arid state with deep water tables and strict water rights laws. Well drilling is expensive and heavily regulated by the Office of the State Engineer (OSE).
Average Total Cost: $12,000 – $35,000Cost Per Foot: $30 – $75
Cost by State
Well Drilling Cost in New York
New York state has enormous geological variety — from the Adirondack granite mountains to the Hudson Valley limestone, the Catskills, and Long Island's sand aquifer. Well costs and depths vary accordingly.
Average Total Cost: $8,000 – $20,000Cost Per Foot: $25 – $65
Cost by State
Well Drilling Cost in Washington State
Washington State is split by the Cascades into two very different worlds — wet western Washington with volcanic geology and dry eastern Washington with the Columbia Plateau basalt aquifer.
Average Total Cost: $9,000 – $20,000Cost Per Foot: $25 – $65
Cost by State
Well Drilling Cost in Oregon
Oregon's geology ranges from the productive Willamette Valley alluvial aquifer to the hard volcanic basalt of eastern Oregon and the Cascade Range. Costs vary significantly between regions.
Average Total Cost: $8,000 – $18,000Cost Per Foot: $22 – $60
Cost by State
Well Drilling Cost in Idaho
Idaho's famous Snake River Plain aquifer is one of the most productive in the world — wells in southern Idaho often flow without pumping. Mountain regions require deeper drilling in harder rock.
Average Total Cost: $7,000 – $18,000Cost Per Foot: $22 – $58
Cost by State
Well Drilling Cost in Montana
Montana well drilling varies dramatically between productive river valley alluvial aquifers and expensive mountain crystalline rock. The state is large and sparsely populated, which affects driller availability and mobilization costs.
Average Total Cost: $9,000 – $22,000Cost Per Foot: $28 – $65
🔧Technical Reference
Technical Reference
Water Well Casing Size Guide
Well casing diameter and material directly affect pump selection, water yield, and longevity. Most residential wells use 4-inch or 6-inch PVC or steel casing. Here is everything you need to know to specify the right casing.
Residential Standard: 4" or 6" diameterCommon Materials: PVC Schedule 40/80, Steel
Technical Reference
Water Well Yield — GPM Requirements & Calculation
Well yield (measured in gallons per minute, or GPM) determines whether a well can meet your water demand. Here is how to calculate what you need and what to expect from different aquifer types.
Typical Household Need: 3–5 GPM minimumComfortable Household: 5–10 GPM
Technical Reference
Well Pump Sizing Guide
Selecting the wrong pump size is one of the most common and expensive well system mistakes. An oversized pump burns out quickly. An undersized pump cannot meet demand. Here is how to get it right.
Typical Residential: 1/2 to 1 HPDeep Well (300+ ft): 1 to 1.5 HP
Technical Reference
Well Water Treatment Guide
Well water quality varies enormously by region and geology. Understanding what is in your water and how to treat it protects your family and your plumbing. Here is what to test for and what each treatment option costs.
Basic Test Cost: $30 – $150Comprehensive Test: $150 – $400
Technical Reference
Average Water Well Depth by State
Well depth varies enormously by state and by local geology within each state. This reference covers typical depths and the factors that drive variation within each region.
Shallowest States: FL, LA, MS (50–150 ft)Deepest States: WY, NM, NV (300–800 ft)
🏠Homeowner Guide
Homeowner Guide
Questions to Ask a Well Drilling Contractor
Hiring the wrong well driller is an expensive mistake. These are the questions to ask before signing any contract.
Get Quotes From: Minimum 3 contractorsCheck License: State licensing board