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Illinois, Williamson County Plumbing Permit Regulations and County Ordinances for Unincorporated Areas

Williamson County, Illinois Plumbing Permit Requirements

Williamson County, Illinois, has specific ordinances that govern construction and development, particularly in unincorporated areas. Plumbing work often falls under these regulations, especially when it involves new construction, alterations, or the installation of sanitary sewage systems.

County-Level Jurisdiction and Unincorporated Areas

The Williamson County Board of Commissioners has the authority to regulate the construction, alteration, and demolition of buildings and structures within the unincorporated areas of the county. This authority is granted by the Illinois Counties Code. For properties in unincorporated areas, the county's ordinances apply directly, as these areas are not subject to the regulations of any incorporated city or village.

Specifically, any Building Permit Application for new or improved structures that include restroom, kitchen, or other plumbing facilities must notify the Franklin-Williamson Bi-County Health Department to verify conformance with sanitary sewage system requirements.

It is important to note that Williamson County does not have zoning regulations. However, if a property is within the extraterritorial jurisdiction (ETJ) of a municipality, that municipality's zoning regulations would apply.

Plumbing Permit Requirements

It is crucial to contact the Williamson County Supervisor of Assessments for the most current and detailed information regarding permit applications, fees, and specific requirements, as permit rules and fees can change.

Resources to Learn More

Note: The following state-wide building codes and regulations apply universally to all jurisdictions within Illinois, including Williamson County.

Illinois Plumbing Legislation, Codes, and Guidelines

State Statutes and Plumbing Codes in Illinois

The state of Illinois does not adopt model codes like the International Plumbing Code (IPC) or the Uniform Plumbing Code (UPC) on a statewide basis. Instead, the state utilizes a standalone, state-developed code known as the Illinois Plumbing Code. This code is codified in the Illinois Administrative Code as Title 77, Part 890.

The authority for these regulations is established by the Illinois Plumbing License Law (225 ILCS 320), which mandates the creation of minimum standards for plumbing materials, fixtures, design, and installation methods to protect public health and safety.

Primary State Agency

The Illinois Department of Public Health (IDPH) is the primary state agency responsible for setting and maintaining these standards. The IDPH Plumbing Program oversees the licensing of plumbers and apprentice plumbers, the registration of plumbing contractors, and the enforcement of the Illinois Plumbing Code across the state, except in jurisdictions that may have their own specific building code requirements (such as the City of Chicago, which maintains its own building code).

Resources to Learn More

Select a City in Williamson County

If your project is located within incorporated city limits, you will likely need to follow municipal ordinances rather than county rules. Select your city below to view local regulations.

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