De Witt County, Illinois
Barnett Township is a township in De Witt County, Illinois. Septic permits inside Barnett Township come from Barnett Township. 4 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the De Witt County page.
Barnett Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Individual sewage disposal systems inside Barnett township, as part of DeWitt County.
“it shall be unlawful for any person to construct, alter, or extend individual sewage disposal systems within dewitt county unless he or she holds a valid permit issued by the health department stating the name of such person for whom the specific construction, alteration or extension is proposed.”
Construction, alteration, or extension of an individual sewage disposal system inside Barnett township, as part of DeWitt County.
“it shall be unlawful for any person to construct, alter, or extend individual sewage disposal systems within dewitt county unless he or she holds a valid permit issued by the health department stating the name of such person for whom the specific construction, alteration or extension is proposed.”
Construction or deepening of a water well inside Barnett township, as part of DeWitt County.
“no water well shall be constructed or deepened, except in accordance with this chapter, and it shall be unlawful to proceed with the work unless a permit has first been obtained from the health authority. a non-community public water supply shall not be operated without first obtaining a permit from the state department of public health.”
Drinking and culinary water supply at properties inside Barnett township, as part of DeWitt County.
public-water availability distance: <= 200 feet (Connection must be practical and permitted by the controlling authority for the water supply.)
“in those locations where a public water supply is reasonably available, that supply shall be the sole source of water for drinking and culinary purposes. a public water supply shall be deemed reasonably available when the subject property is located within 200 feet of the public water supply to which connection is practical and is permitted by the controlling authority for the water supply.”
We looked and could not find an official answer yet. Silence is not permission; ask Barnett Township or De Witt 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 Barnett Township publishes no rule on the point, not that none exists. De Witt County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Barnett Township means bringing your own water and power. The kit we’d start with:
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