Well Drilling in Iowa
Avg. $6,000 - $25,000 · One-time (well lifespan 30-50 years)
Water well drilling is the process of boring a hole into the earth to access underground aquifers that provide fresh water for drinking, irrigation, and household use. Approximately 43 million Americans rely on private wells as their primary water source. Residential wells typically range from 100 to 500 feet deep depending on the local geology and water table depth, though some areas require wells exceeding 1,000 feet. The drilling method depends on the geological conditions — rotary drilling is most common for deep wells through rock formations, while cable tool (percussion) drilling works well in unconsolidated materials like sand and gravel. After drilling, the well is cased with steel or PVC pipe to prevent contamination from surface water, and a submersible pump is installed at the appropriate depth to bring water to the surface. A pressure tank system in your home maintains consistent water pressure. The complete system includes the well itself, casing, pump, pressure tank, and connection piping. New wells require permits from state or local water authorities, and most states mandate a water quality test before the well can be used. Costs vary enormously by region and depth — from $6,000 in the Southeast to over $30,000 in areas with deep bedrock or difficult drilling conditions.
Iowa Regulations for Well Drilling
Iowa regulates private sewage disposal systems under Iowa Code Chapter 455B and Iowa Administrative Code 567 Chapter 69, administered by the Iowa Department of Natural Resources (Iowa DNR). Iowa's program delegates most permitting and enforcement to county boards of health or local health departments under Iowa Code Chapter 137C. Iowa has one of the highest rates of agricultural land use in the nation, and septic system standards reflect concerns about nutrient loading to the state's heavily agricultural watersheds. Iowa's Private Sewage Disposal System (PSDS) program requires a site evaluation including a soil boring and percolation test. Conventional absorption systems (trenches and beds) are the most common type, though alternative systems are increasingly required. Iowa has a voluntary upgrade incentive program through its Onsite Wastewater Assistance Program. Setbacks include 75 feet from water supply wells, 25 feet from water courses, 10 feet from property lines, and 25 feet from drainage tile lines — the last being particularly significant given Iowa's extensive subsurface tile drainage network.
Licensing Requirements
Iowa requires private sewage disposal system installers to hold a PSDS Installer Certificate issued by the Iowa DNR. Designers of larger systems must be licensed Professional Engineers. Pumpers must hold an Iowa DNR Septage Hauler Certificate and arrange disposal at approved land-application sites or septage treatment facilities. County sanitarians who administer local programs must hold state health officer certification. Continuing education requirements apply to both installers and pumpers.
Environmental Considerations
Iowa's soils are among the most agriculturally productive in the world — deep Mollisols (Tama, Muscatine, Clarion series) with high organic matter and moderate to good drainage in most upland areas. However, Iowa's flat Des Moines Lobe — the youngest glaciated region, covered by ice as recently as 14,000 years ago — features poorly drained soils (Webster, Harps series) with seasonal water tables at or near the surface and extensive artificial tile drainage. Eastern Iowa has older, better-drained glacial till (Kenyon, Clyde series) with greater natural soil depth. Iowa's karst region in the northeast (Winneshiek, Allamakee, Clayton counties) has thin soils over Ordovician and Silurian limestone with rapid groundwater connectivity. Iowa's Raccoon River — Des Moines's primary water supply — is chronically impaired by nitrate from agricultural and septic sources, making nitrogen management in rural Polk and Dallas county areas a particular concern.
Signs You Need Well Drilling
- Building a new home without access to municipal water supply
- Existing well has gone dry or produces insufficient water
- Water quality has deteriorated beyond what treatment can fix
- Adding irrigation needs that exceed existing well capacity
- Existing well is contaminated and cannot be rehabilitated
The Well Drilling Process
- 1 Site assessment and hydrogeological survey to identify the best drilling location
- 2 Obtain required drilling permits from state or local water authority
- 3 Mobilize drilling rig and begin boring through soil and rock layers
- 4 Install well casing and screen at the appropriate aquifer depth
- 5 Develop the well by pumping to clear drilling debris and maximize flow
- 6 Install submersible pump, pressure tank, and connection piping
- 7 Conduct water quality testing and obtain certificate of completion
Frequently Asked Questions — Well Drilling in Iowa
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Find Well Drilling in Iowa Cities
Browse 2 cities in Iowa for well drilling providers.
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