Private Sewage Disposal
Permitting and Inspection FAQs
A permit application is required when the septic tank is replaced or where a major component of the system is removed or added.
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FAQs about NPDES Permits and Surface Discharging Systems
A popular type of private sewage disposal system in Illinois used by many homeowners is designed to treat sewage and then discharge treated wastewater to the surface of ground rather than below the surface where the water is absorbed.
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Understanding and Maintaining Your Septic System
Over 25% of Illinois households use on-site sewage treatment systems to treat wastewater.
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