An educational, cited reference for homeowners — not a claim that ClickSeptic services Illinois today. ClickSeptic has zero live markets anywhere yet.
Short answer: The Illinois Department of Public Health (IDPH) regulates private sewage disposal systems statewide (non-discharging septic systems and surface-discharging systems up to 1,500 gpd) under the Private Sewage Disposal Licensing Act (225 ILCS 225) and the Private Sewage Disposal Code (77 Ill. Admin. Code Part 905). Roughly 90 local health departments act as IDPH's agents or under local ordinances to review plans, issue permits, and enforce the code, while IDPH licenses installation and pumping contractors statewide. The Illinois EPA separately issues NPDES general permits (ILG62) for surface-discharging systems.
Last updated: September 2026. This page summarizes public Illinois regulatory information for homeowner reference and is not legal advice — always confirm current requirements directly with the state or local agency cited below. ClickSeptic has not launched in any market and has zero operators onboarded anywhere today; this page does not claim ClickSeptic provides service in Illinois or anywhere else.
The Illinois Department of Public Health (IDPH) regulates private sewage disposal systems statewide (non-discharging septic systems and surface-discharging systems up to 1,500 gpd) under the Private Sewage Disposal Licensing Act (225 ILCS 225) and the Private Sewage Disposal Code (77 Ill. Admin. Code Part 905). Roughly 90 local health departments act as IDPH's agents or under local ordinances to review plans, issue permits, and enforce the code, while IDPH licenses installation and pumping contractors statewide. The Illinois EPA separately issues NPDES general permits (ILG62) for surface-discharging systems.
There is no statewide Illinois law mandating septic inspection at the time of a home sale or transfer; the Illinois Extension and multiple county health departments confirm this is not a state requirement. However, at least 26 Illinois counties have adopted their own local ordinances requiring septic (and often well) inspection or pumping as a condition of real estate transfer, and some counties (e.g., Fulton County) have recently repealed such local mandates, making it purely optional in those areas.
Illinois does codify an evaluation schedule: under 77 Ill. Admin. Code 905.20(q), residential septic tanks installed after January 1, 2014 must be evaluated within 3 years of installation and at least once every 5 years thereafter (non-residential tanks every 3 years), with pumping required once scum and settled solids exceed 33% of the tank's liquid capacity. This is a codified evaluation interval rather than a fixed statewide pumping calendar, since actual pumping is triggered by the solids measurement, not a flat time rule.
Septic permits in Illinois are issued locally: the roughly 90 local health departments that serve as IDPH's local agents (or that administer their own ordinances meeting or exceeding state minimums) review site/soil evaluations and issue installation and repair permits. IDPH itself does not issue individual homeowner permits but sets the statewide minimum design and construction standards those local permits must satisfy.
Illinois requires state licensure not just of septic pumpers but also of installation contractors, and 77 Ill. Admin. Code 905.20 requires a licensed Private Sewage Disposal System Installation Contractor to be physically present on-site whenever a non-homeowner performs construction, installation, repair, modification, or maintenance — a stricter on-site supervision rule than most neighboring states impose.
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