Iowa Statutes, Administrative Rules, and Contractor Certification
This domain tests the legal architecture behind Iowa well work: which statute grants authority, which administrative rules set technical standards, and who may legally construct, reconstruct, or plug a well. Expect questions that separate the role of the Iowa Legislature from the role of the Department of Natural Resources (DNR).
Authority and rules
Iowa Code Chapter 455B is the enabling statute. It gives the DNR authority to adopt and enforce water well construction rules. The technical detail is in 567 Iowa Administrative Code Chapter 49, which covers location, casing, grouting, disinfection, pump installation, and plugging. Local ordinances may be stricter, but they do not replace state rules.
Certification
Iowa uses separate credentials for water well contractors and pump installers. Certification is not a registration formality: the certified person must pass an examination, document experience, pay fees, and maintain continuing education for renewal. Only certified contractors may construct or plug wells; uncertified helpers may assist under supervision, but responsibility stays with the certified contractor. Well logs and plugging records must be filed with the DNR within the required time.
Worked example
A landowner asks an uncertified excavator with a small rig to drill a 120-foot domestic well. The correct answer is no. The excavator may not construct the well, even if a certified contractor is available by phone. The certified contractor must supervise and remain responsible, and a well log must be submitted.
Traps
Assuming a county permit substitutes for state certification; treating a lapsed certificate as valid during a job; relying on verbal approval instead of written records; and forgetting that plugging is regulated work, not simple dirt work.