Lee County, Illinois
Nelson Township is a township in Lee County, Illinois. Septic permits inside Nelson Township come from Lee County (Lee County Health Department, Environmental Health · 815-284-3371). 5 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Lee County page.
Nelson Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Septic and sewage disposal systems on land inside Nelson township; the county board of health and county health department administer them
“Applications shall be approved by the County Health Department and permits shall be issued before any construction or repair is undertaken and before the building permit is issued.”
Septic tanks, privy vaults, sink drains and sewage disposal systems in Lee County, including land inside Nelson township (county rule; no Nelson township septic ordinance was found)
“No septic tank, privy vault, sink drain, or sewage disposal system shall be erected, constructed, or repaired in this county, except in accordance with this chapter, and it shall be unlawful to proceed with such work unless a permit has first been obtained from the County Board of Health; provided, however, that where the connection is to be made to a public sewer, arrangements shall be made with the municipality owning the sewer rather than the County Board of Health.”
Non-sewer sanitation (alternative septic systems) on land inside Nelson township in Lee County
“Alternative systems are allowed within Lee County; provided, that the following criteria are met prior to or during the installation of the system:”
Septic/sewage application fees for systems on land inside Nelson township in Lee County
tank-only septic application fee, contractor-submitted: 125 USD (code fee table prints $150.00 for the 2027 column and $175.00 for the 2030 column) · residential tank and field septic application fee, contractor-submitted: 225 USD (code fee table prints $250.00 for the 2027 column and $275.00 for the 2030 column) · non-residential septic application fee, contractor-submitted: 325 USD (code fee table prints $350.00 for the 2027 column and $375.00 for the 2030 column) · residential septic application fee, owner-installed (twice the contractor-installed residential fee): 450 USD (derived from the code's rule that owner-installed fee equals twice the contractor-installed residential amount; not separately printed) · late filing fee: set by Lee County Board of Health
“A fee of one hundred twenty-five dollars ($125.00) for tank-only installation, two hundred twenty-five dollars ($225.00) for residential properties, and three hundred twenty-five dollars ($325.00) for commercial properties must accompany each sewage application submitted by a licensed septic contractor. The fee for required permits shall increase every three years by $25.00.”
Septic/sewage permit process for land inside Nelson township in Lee County; no township building permit process was found
“Application for permits under this section shall be in writing and in such form as prescribed by the health authority. Each application shall be accompanied by a plat showing the locations of all existing and proposed wells, sewers, septic tanks, seepage systems, privy vaults, and other sewage disposal facilities and by drawings, plans, and specifications of all the above units which are proposed to be installed.”
We looked and could not find an official answer yet. Silence is not permission; ask Nelson Township or Lee 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 Nelson Township publishes no rule on the point, not that none exists. Lee County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Nelson Township means bringing your own water and power. The kit we’d start with:
These are affiliate links — we may earn a commission, at no cost to you. As an Amazon Associate, Bolthole Index earns from qualifying purchases.