Jackson County, Illinois
Somerset Township is a township in Jackson County, Illinois. Septic permits inside Somerset Township come from Jackson County (Jackson County Health Department · 618-684-3143). 3 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Jackson County page.
Somerset Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Private sewage (septic) systems built or altered inside Somerset township, Jackson County, IL, under the Jackson County Private Sewage Disposal System Ordinance. The county ordinance is countywide, so it applies inside Somerset township; it is not Somerset township's own rule.
“the fee shall be collected by the health department at the time of application for permit is submitted, and shall be deposited into the health department funds.”
Construction, alteration or extension of a private sewage disposal system inside Somerset township, Jackson County, IL (county ordinance applies countywide, including Somerset township)
septic system construction/alteration permit fee: 50 USD (1989 amendment; plus separate fees for design of plans ($25), percolation test reading ($25), and subdivision plan review ($100))
“there shall be a standard $50.00 permit fee charged for the issuance of a permit authorizing construction, alteration or emtension of any private sewage disposal system.”
Private sewage system permit and related service fees for systems inside Somerset township, Jackson County, IL (county ordinance applies countywide)
septic system construction/alteration permit fee: 50 USD (1989 amendment; additional fees: design of plans $25.00, percolation tests (reading only) $25.00, subdivision plan review $100.00)
“in addition, the following fee schedule shall apply for other specific services rendered. 1. design of plans - $ 25.00. 2. percolation tests (reading only) - $ 25.00. 3. subdivision plan review - $100.00.”
We looked and could not find an official answer yet. Silence is not permission; ask Somerset Township or Jackson County directly.
Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.
Unanswered questions are usually a sign that Somerset Township publishes no rule on the point, not that none exists. Jackson County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Somerset Township means bringing your own water and power. The kit we’d start with:
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