Iowa Environmental
Practice Questions & Answers (2026)
Environmental questions on the Iowa exam cover both federal environmental laws and Iowa-specific disclosure requirements. Federal topics include lead-based paint (pre-1978 housing), asbestos, radon, underground storage tanks, and CERCLA liability. Iowa has additional state-level environmental disclosure requirements enforced by the Iowa Real Estate Commission — including Iowa-specific environmental conditions that affect property use and disclosure. Environmental questions trip up candidates who studied only federal law without reviewing the IA-specific overlay.
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Iowa Environmental — Practice Questions & Answers
87 questions on Environmental from the Iowa real estate question bank. First 10 are free — sign up to unlock all 87.
Q1. Iowa's Groundwater Hazard Statement is required to be completed by the seller when:
Explanation
Iowa law requires sellers of real property to complete a Groundwater Hazard Statement disclosing information about wells, underground storage tanks, solid waste disposal sites, hazardous waste, and burial sites on the property. It is required for all real property transfers in Iowa.
Q2. Radon is a naturally occurring radioactive gas that poses a health risk when it accumulates indoors. What is the EPA's recommended action level for radon?
Explanation
The EPA recommends taking action to reduce radon levels when indoor concentrations reach or exceed 4 picocuries per liter (pCi/L). Iowa has one of the highest percentages of homes with elevated radon levels in the United States.
Q3. Lead-based paint disclosure requirements under federal law apply to:
Explanation
Federal law (the Residential Lead-Based Paint Hazard Reduction Act) requires disclosure of known lead-based paint and lead hazards for all residential dwellings built before 1978. Buyers must also be given an EPA-approved pamphlet about lead hazards.
Q4. An underground storage tank (UST) on a property may create environmental concerns because:
Explanation
Underground storage tanks (USTs) can leak over time, releasing petroleum products or hazardous chemicals into the soil and groundwater. This contamination creates significant environmental and financial liability. Iowa's Groundwater Hazard Statement requires disclosure of USTs.
Q5. Asbestos-containing materials in a building pose the greatest health risk when:
Explanation
Asbestos is most dangerous when it becomes 'friable' — meaning it crumbles easily or can be reduced to powder, releasing microscopic fibers into the air. Inhaling asbestos fibers can cause serious lung diseases including mesothelioma and asbestosis.
Q6. CERCLA (the Comprehensive Environmental Response, Compensation, and Liability Act) is commonly known as:
Explanation
CERCLA, enacted in 1980, is commonly known as Superfund. It established the federal government's authority to clean up hazardous waste sites and created a trust fund (Superfund) to finance cleanups. Property owners can be held liable for cleanup costs.
Q7. Iowa regulations require that abandoned wells on property being sold must be:
Explanation
Iowa law requires abandoned wells to be properly plugged and decommissioned in accordance with Iowa Department of Natural Resources (DNR) requirements. The Groundwater Hazard Statement requires disclosure of wells, and sellers are responsible for proper closure of abandoned wells.
Q8. A Phase I Environmental Site Assessment (ESA) is intended to:
Explanation
A Phase I ESA identifies potential and recognized environmental conditions (RECs) through records review, site inspection, and interviews — without physical sampling. If RECs are identified, a Phase II ESA involves actual testing and sampling.
Q9. Iowa ranks among the states with the highest percentage of homes with elevated radon levels primarily because:
Explanation
Iowa's high radon levels are primarily due to the soil and rock containing uranium-bearing materials (granitic glacial deposits) that decay into radium and then into radon gas. The gas seeps upward through the soil and can accumulate in buildings.
Q10. In Iowa, sellers are required to complete the Groundwater Hazard Statement and disclose information about:
Explanation
Iowa's Groundwater Hazard Statement requires sellers to disclose information about wells (active and abandoned), underground storage tanks, solid waste disposal sites, hazardous waste contamination, and burial sites. This comprehensive disclosure protects buyers from environmental liabilities.
Q11. Mold growth in residential properties in Iowa is most commonly caused by:
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