Illinois Water Well Construction Code, Licensing Rules, and Public Health Protection
This domain tests the legal side of drilling in Illinois: the Water Well Construction Code (77 Ill. Adm. Code 920), the Water Well and Pump Installation Contractor's License Act (225 ILCS 115), and the public health rationale behind both. The Illinois Department of Public Health administers the licensing and construction-report system.
Licensing rules
A contractor license is required to construct, repair, or abandon water wells and to install pumps. Individuals work under the licensed contractor, and the license number appears on reports and proposals. Licensing protects the public by making the contractor accountable for code compliance; unlicensed practice is a violation even if the well is technically sound.
Code compliance
Follow the statewide standards for setbacks, casing, grouting, disinfection, and abandonment. Local ordinances may be stricter but cannot relax state minimums. File the water well construction report with the Department, typically within 30 days of completion, and keep accurate records of depth, casing, grout, and yield.
Public health protection
Wells must prevent direct connection between contaminated surface water and the aquifer, maintain a sanitary wellhead, and use backflow prevention where needed. Routine testing for coliform bacteria and nitrate is the practical check on construction quality.
Worked example
A homeowner wants a well 30 feet from the septic tank. The contractor must refuse that location and propose a compliant site. Drilling anyway violates the setback rule, and failing to file the construction report is a separate violation; either can lead to discipline against the license. The county permit does not replace the state license or code.
Traps that cost marks
Believing a local permit substitutes for the state contractor license; skipping the construction report because the well failed; and treating an inspector's verbal comment as a code waiver.