costtodrillawell.com

Cost to drill a 100 ft well: $6,500–$24,500

A 100 ft drilled water well costs $6,500–$24,500 finished, with a midpoint of $15,500, at national driller rates. Drilling and casing alone run $3,900–$13,400; the pump, pressure tank, and hookup make up the rest. It is a typical depth in Alaska, Michigan and Minnesota, where the middle half of reported wells spans 100 ft.1,2,3,4,5,6,7,8,9

Key figures for a 100 ft well

ItemFigure
Finished 100 ft well (midpoint $15,500) $6,500–$24,5001,2,3,4,5,6,7,8,9
Drilling and casing only $3,900–$13,4001,2,3,4,5,6
All-in cost per foot, midpoint $155/ft1,2,3,4,5,6,7,8,9
States with a median deeper than 100 ft 31 of 351

Estimate a 100 ft well

Typical total: $6,500–$24,500, midpoint $15,500.1,2,3,4,5,6,7,8,9

Depth set to 100 ft by you. Rates for the United States.

Low uses the 25th percentile depth at low rates; high uses the 75th percentile at high rates.
Line itemLowMidHigh
Drilling (per foot of depth) (100 ft × $50/ft)$2,500$5,000$7,5003
Casing, installed (65 ft × $28/ft)$700$1,800$2,9004
Rig mobilization and setup ($550–$2,500)$600$1,500$2,5005
Well permit ($50–$500)$100$300$5006
Pump, wire, and drop pipe, installed ($1,000–$4,000)$1,000$2,500$4,0007
Pressure tank and switch, installed ($500–$1,800)$500$1,200$1,8007
Trench, water line, and electrical to the house ($1,000–$5,000)$1,000$3,000$5,0008
Water quality test ($50–$250)$100$200$3009
Total$6,500$15,500$24,500

Casing depth of 65 ft is a model assumption; the records for this area do not report casing.2

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Line items on a 100 ft well

Well cap Submersible pump Casing to about 70 ft Total depth about 100 ft Soil and loose rock Open hole in rock
Cross-section of a 100 ft well with casing to about 70 ft

The borehole costs $2,500–$7,500 at 100 ft. Casing, the pipe that lines the upper borehole, is assumed to run to about 70 ft here; your driller sets the real casing depth from the geology they hit.

Line itemLowMidHigh
Drilling (per foot of depth)$2,500$5,000$7,500
Casing, installed$700$1,800$2,900
Rig mobilization and setup$600$1,500$2,500
Well permit$100$300$500
Pump, wire, and drop pipe, installed$1,000$2,500$4,000
Pressure tank and switch, installed$500$1,200$1,800
Trench, water line, and electrical to the house$1,000$3,000$5,000
Water quality test$100$200$300
Total$6,500$15,500$24,500

Sources3,4,5,6,7,8,9,2

States where 100 ft is a typical depth

In these 16 states, 100 ft falls inside the middle half of reported domestic wells. The cost column uses each state's driller rates where we have them.

StateMedian depth (ft)Middle half (ft)100 ft well
Alaska10070–160$6,500–$24,500
Michigan10070–140$5,700–$23,300
Minnesota10070–160$9,400–$22,700
Indiana9060–130$6,500–$24,500
North Dakota11060–180$6,500–$24,500
Kansas8060–120$6,500–$24,500
Ohio12080–180$7,300–$25,100
Wisconsin13080–200$6,500–$24,000
Florida130100–180$6,500–$22,100
Kentucky14090–200$6,500–$24,500
Nebraska160100–230$6,500–$24,500
Illinois17090–260$6,500–$24,500
Montana17090–300$6,700–$24,500
Washington170100–300$15,400–$32,500
Oregon190100–320$6,900–$24,300
New York200100–320$6,200–$20,700

Sources10,2,3,4,5,6,7,8,9,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48

Counties with a median well near 100 ft

629 counties with 30 or more reports have a median that rounds to this page's depth; these are the 15 with the most reports.

CountyStateMedian depth (ft)Reports
MarionFlorida12018,217
SedgwickKansas8010,176
Crow WingMinnesota708,295
SarasotaFlorida1207,340
OaklandMichigan906,764
CassMinnesota706,374
KentMichigan1006,215
Otter TailMinnesota905,987
SussexDelaware605,492
AlleganMichigan905,194
BrevardFlorida805,144
HernandoFlorida1405,086
St. LouisMinnesota1404,737
AnokaMinnesota1404,691
LivingstonMichigan904,574

Sources28,20,15,11,49

Common questions

Is 100 ft deep for a water well?

100 ft is deeper than the median domestic well in 4 of the 35 states that publish completion reports in bulk. The national median is 200 ft. Whether 100 ft is normal where you live depends on the aquifer, so compare it with the county table on your state page.

How much more does a deeper well cost than a 100 ft well?

Going to 200 ft raises the midpoint from $15,500 to $22,300. The driller cannot promise a depth in advance, so a quote should state the per-foot rate for any footage beyond the estimate.

Related pages

For the full range at every depth and state, see cost to drill a well.

Sources

  1. National depth distribution, median of state percentiles , Cost to Drill a Well. Accessed November 9, 2026. Median across states with records of each state's 25th, 50th, and 75th percentile depth.
  2. Default casing share of well depth , Cost to Drill a Well. Accessed November 9, 2026. Median of state casing_p50 / depth_p50 across states that report casing. Used only where no local casing median exists.
  3. Water Well Installation: Complete Guide, Cost and Tips for Success , Stevens Drilling (La Vernia, TX). Accessed November 8, 2026. Published 2025-10-27. Drilling $25-$65/ft; pumps $500-$2,000; pressure tank $300-$1,500; permit/licensing $100-$750; total $7,500-$17,000+.
  4. Cost to Drill a Water Well in Northern California , Weeks Drilling & Pump Co. (Sebastopol, CA). Accessed November 8, 2026. Published 2026-04-30. Drilling $35-$130/ft; steel casing $20-$45/ft; pump and pressure tank $3,500-$9,000; permitting $500-$2,500.
  5. D-203(5) Statewide Drilling Services, Exhibit D Price Schedule (Thein Well Co., contract 226711) , Minnesota Office of State Procurement. Accessed November 8, 2026. 2023 state-contract unit rates from a licensed MN driller: 6-in borehole $30-$31/ft (mud rotary/auger), $75/ft air rotary in rock; 6-in casing $28/ft (code) to $48/ft (black steel); mobilization $1,000/project; 34-gal pressure tank installed $1,000, 62-gal $1,450; submersible pump 3/4-1 hp $1,250-$1,350 each; drop pipe $7/ft; pitless and lateral $2,000; trench $20/LF. Agency-buyer rates, not retail quotes.
  6. Compilation of fetched state and county well permit fees (research/rates/NOTES.md, section permit) , costtodrillawell.com research. Accessed November 8, 2026. Internal compilation used only for the national permit fallback. Component sources: ok-owrb-well-driller-fact-sheet ($0), fl-nwfwmd-well-fees through fl-manatee-water-wells-2026 ($35-$265), ny-dutchess-dbch-fees ($45), wi-dnr-well-notification ($50.50), ga-pierce-well-permit-2024 ($70), idaho-code-42-235 ($75), crs-37-92-602 ($100), az-ars-45-596 ($100-$150), nmac-19-27-5 ($125), wa-rcw-18-104-055 ($200), nc-wayne-private-wells through nc-gaston-eh-fees ($225-$450), mi-grand-traverse-fees-2026 and mi-delta-menominee-fees-2025 ($240-$334), mt-dnrc-form-613-2025 ($250-$400), pa-chester-county-health-fees ($300), mn-stat-103i-208 ($325), oh-logan-fees-2024 through oh-summit-fees-2025 ($350-$594), or-hb2808-2025 ($490), blanco-pedernales-gcd-fees-2025 ($500), ca-calaveras-fees-2026 ($693), ny-nyc-well-water-permit ($1,090 outlier).
  7. How Much Does a Well Pressure Tank Cost? , Mid Atlantic Water LLC (water-system supplier, nationwide). Accessed November 8, 2026. Updated 2026-10-14; prices live as of 2026-09. Tank replaced by plumber $800-$1,800 all-in (20-44 gal); labor $200-$500; submersible pump job $1,000-$2,500; tank plus pump $2,500-$5,000+. Supplier, not an installer.
  8. What Are the Cost Factors of Drilling a Santa Fe Water Well? , Boylan Water Well Service (Santa Fe, NM). Accessed November 8, 2026. Published 2026-06-25. Drilling incl. PVC casing $28-$65/ft; submersible pump $850-$2,500; casing and grouting $1,500-$4,000; pressure tank and controls $500-$1,800; electrical hookup and trenching $1,000-$3,500; permits and lab testing $300-$1,000; turn-key $12,000-$30,000+.
  9. DSHS Austin Laboratory Fee Schedule, effective 2026-09-01 , Texas Department of State Health Services. Accessed November 8, 2026. Potable Water (coliform) MZZ0441A $18.39; Nitrate-N EZZ0048A $30.00; Routine Water Mineral Group $155; All Metals $165; VOCs $150.
  10. Well Log Tracking System (WELTS) , Alaska Department of Natural Resources. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  11. Wellogic water well records , Michigan Department of Environment, Great Lakes, and Energy. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  12. The Real Cost of Installing a Septic System and Well in Michigan (2026 Edition) , K2 Excavating (Michigan excavating and septic contractor; not a licensed well driller). Accessed November 8, 2026. Published 2026-02-20. Drilling $15-$65/ft; pump, pressure tank and controls installed $1,500-$3,000; permits $300-$600; initial water testing $150-$300; total $5,000-$15,000 (average about $9,000). Adjacent trade; weaker evidence.
  13. 2025 Environmental Health Fee Schedule (OSTDS & Wells), effective 2025-03-01 , Public Health, Delta & Menominee Counties (MI). Accessed November 8, 2026. Well construction permit, residential/irrigation $334; sand point well $100; double fee if work starts before permit.
  14. Laboratory fee list (EGLE-certified drinking water lab), effective 2026-07-06 , City of Cadillac Laboratory (MI). Accessed November 8, 2026. Drinking water coliforms, total and E. coli P/A $35; nitrate $35.
  15. Minnesota Well Index , Minnesota Department of Health. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  16. Minn. Stat. 103I.208 Well Notification and Permit Fees , Minnesota Revisor of Statutes. Accessed November 8, 2026. Water supply well construction notification $325 (includes $40 state core function fee); sealing $125. Effective 2025-07-01 per MDH fee schedule (https://www.health.mn.gov/communities/environment/water/wells/feesched.html). Delegated county/city programs set their own fees.
  17. Water Testing , Washington County, Minnesota, Public Health & Environment. Accessed November 8, 2026. Undated. Standard drinking water test (coliform and nitrate) $50; coliform $25; nitrate $25.
  18. Water Well Record Database , Indiana Department of Natural Resources. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  19. Ground and surface water site data , North Dakota Department of Water Resources. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  20. Water Well Completion Records (WWC5) , Kansas Geological Survey. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  21. Water well log database , Ohio Department of Natural Resources. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  22. Complete Water Well System Cost: Full Transparency from an Experienced Driller , K & B Water Well Drilling & Excavation (Mount Gilead, OH). Accessed November 8, 2026. Undated (2026 site). Drilling alone $30-$80+/ft; steel casing sometimes over $100/ft; pump unit $900-$2,500 plus installation; tank and switch $500-$2,000; full installed system $6,000-$16,000.
  23. 2026 Approved Fee Schedule, Private Water System Fees effective 2026-01-01 , Butler County General Health District (OH). Accessed November 8, 2026. New private water system (well), single family dwelling $534 ($440 local + $74 state + $20 ODNR), includes one site visit, one water sample and one inspection; water samples $90 base plus lab costs.
  24. Private Water Systems , Ashland County Health Department (OH). Accessed November 8, 2026. Undated (2026 site). New single family application/permit $309 plus $75 water sample fee = $384.
  25. Well Construction Reports , Wisconsin Department of Natural Resources. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  26. Well Construction Notification , Wisconsin Department of Natural Resources. Accessed November 8, 2026. Undated. The Well Construction Notification fee is $50.50. Some counties add a sanitary permit.
  27. Public Environmental and Water Testing Prices, effective 2026-07-01 , Wisconsin State Laboratory of Hygiene. Accessed November 8, 2026. Bacteria (total coliform/E. coli) P/A $35.00; Nitrate $35.00; Nitrite $38; HUD/FHA-VA loan package $146.00; Homeowner package (5 bottle) $450.00.
  28. Well completion report sites and well construction permits , St. Johns River and Southwest Florida Water Management Districts. Accessed November 8, 2026. Records from two districts; the Southwest Florida district data is at data-swfwmd.opendata.arcgis.com.
  29. How Much Does It Cost to Drill a Water Well in 2026? , Parrish Well Drilling (Sarasota, FL). Accessed November 8, 2026. Published 2026-04-17. Drilling $25-$65/ft; pumps $1,000-$3,000; full system $5,000-$15,000 for 100-300 ft Sarasota-area wells; 200-ft well $7,000-$15,000.
  30. Well Permitting Fee Schedule , Northwest Florida Water Management District. Accessed November 8, 2026. Undated (2026 site; matches F.A.C. 40A-3.201). Wells 6 inches and greater $100; 4 to under 6 inches $50; under 4 inches $35; delineated-area domestic well $100.
  31. Drinking Water , Florida Department of Health in DeSoto County. Accessed November 8, 2026. Undated (2026 site). Bacteria $26; nitrate/nitrite $35; lead $35.
  32. Kentucky Groundwater Data Repository, water wells , Kentucky Geological Survey. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  33. Registered groundwater wells , Nebraska Department of Water, Energy, and Environment. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  34. ILWATER, Water and Related Wells , Illinois State Geological Survey. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  35. Ground Water Information Center (GWIC) , Montana Bureau of Mines and Geology. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  36. Form 613 Water Right Fee Schedule, effective 2025-10-01 , Montana DNRC Water Resources Division. Accessed November 8, 2026. Form 602 Notice of Completion of Groundwater Development (35 gpm / 10 ac-ft exempt well) $250.00; $400.00 in a Controlled Groundwater Area; Form 602I Notice of Intent (effective 01/2026) $400.00 (https://dnrc.mt.gov/_docs/water/Water-Rights-Forms/602I.pdf).
  37. Environmental Laboratory Testing Fee Schedule, effective 2024-01-01 , Montana DPHHS Laboratory Services Bureau. Accessed November 8, 2026. Total coliform P/A $25.00; nitrate+nitrite as N $28.00; Basic Screen package $55.00; Full Well Screen $340.00.
  38. Well Reports , Washington State Department of Ecology. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  39. Well Drilling Cost in Washington: 2026 Price Guide , Wenatchee Well Pros (pump and water-system installer, Wenatchee, WA; does not drill). Accessed November 8, 2026. Published 2026-07-02. Soft formation $45-$65/ft; basalt $65-$95/ft; installed 6-inch steel casing $55-$90/ft; pump systems $4,500-$7,500 (200 ft) to $8,000-$12,000 (over 400 ft); mobilization $500-$2,500; trenching and hookup $1,500-$5,000; water testing $150-$400; 200-ft well complete $18,000-$25,000. Not a licensed driller; weaker evidence.
  40. RCW 18.104.055 Well construction fees , Washington State Legislature. Accessed November 8, 2026. 2005 c 84. Fee for one water well with top casing under 12 inches $200; 12 inches or greater $300; paid with the notice of intent to Ecology (https://ecology.wa.gov/regulations-permits/reporting-requirements/well-construction-notice-of-intent adds a 3 percent card fee).
  41. Water Lab , Thurston County Public Health & Social Services (WA). Accessed November 8, 2026. 2025 schedule. Total coliform and E. coli P/A $32; nitrate $32.
  42. Well Log Query , Oregon Water Resources Department. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  43. Enrolled House Bill 2808 (2025), amending ORS 537.762 and 537.753 , Oregon Legislative Assembly. Accessed November 8, 2026. Start card for construction of a new well: fee of [$350] $490; landowner's permit (owner-drilled) [$500] $550. Effective 2025-07-17 per OWRD (https://www.oregon.gov/owrd/programs/GWWL/WCC/Pages/House-Bill-2808.aspx).
  44. Testing Recommendations (Domestic Well Safety Program) , Oregon Health Authority. Accessed November 8, 2026. Undated. Typical accredited-lab prices: coliform and E. coli $20-$40; nitrate $20-$40; arsenic $25-$45.
  45. Water Well Program, wells drilled since 2000 , New York State Department of Environmental Conservation. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.
  46. Well Drilling Cost in Lakewood, NY , McCandless Well Drilling and Services Inc. (Jamestown, NY). Accessed November 8, 2026. Updated February 2026. Western New York drilling $25-$65/ft; pump installed $800-$2,000; pressure tank installed $500-$1,500; complete well and pump system $7,500-$12,000; average depth about 115 ft.
  47. Fees , Dutchess County Department of Behavioral & Community Health (NY). Accessed November 8, 2026. Undated. Individual well permits $45.
  48. Environmental Services Fee Schedule (approved 2025-09-19) , Westchester County Department of Laboratories & Research (NY). Accessed November 8, 2026. Total coliform and E. coli P/A $32.10; nitrate as N $80.25; Well Water Package A (Private Well Testing Law) $583.10.
  49. Well Permits , Delaware Department of Natural Resources and Environmental Control. Accessed November 8, 2026. Well completion records used for depth, casing, and yield distributions.

How these figures are built: methodology. Updated November 2026.