McHenry County, Illinois
Chemung Township is a township in McHenry County, Illinois. Septic permits inside Chemung Township come from McHenry County (McHenry County Department of Health, Environmental Health Division · (815) 334-4000). 7 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the McHenry County page.
Chemung 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 disposal systems inside Chemung Township, which the township's official site identifies as being in McHenry County.
“The McHenry County Department of Health is the agency responsible for reviewing and issuing septic system permits in McHenry County.”
Installation, repair, extension, replacement, or abandonment of a septic system inside Chemung Township.
“A septic system permit is required before a septic system is installed, repaired, extended, replaced or abandoned in McHenry County. Some very minor repairs (rodding lines, replacing solid pipe, replacing damaged distribution or drop boxes) do not require a permit.”
Permitted septic-system installations inside Chemung Township.
“Either the property owner or Licensed Private Sewage Disposal Installation Contractor must contact the Health Department and request an inspection. Department staff will inspect the septic installation the following working day.”
Private septic systems serving property inside Chemung Township.
“A septic system permit is required before a septic system is installed, repaired, extended, replaced or abandoned in McHenry County. Some very minor repairs (rodding lines, replacing solid pipe, replacing damaged distribution or drop boxes) do not require a permit.”
Construction, deepening, modification, capping, or sealing of a water well inside Chemung Township.
“No person shall construct, deepen, modify, cap, or seal a water well until a permit has been issued by the Department. Applications for permits shall be in writing on forms provided by the Department and shall be signed by the applicant and property owner if different from the applicant.”
Potable water supply for residences and other habitable buildings inside Chemung Township.
“Construction of a potable water well shall not be permitted on property where a community public water supply is reasonably available. If a community public water supply is not reasonably available, then every residence, business, habitable building, or enterprise shall be provided with a water well in conformance with the provisions set forth in this Ordinance.”
Septic permit applications for property inside Chemung Township.
initial technical review for new files: <= 5 working days (Typically completed within this period after receipt.) · initial technical review for revised files: <= 3 working days (Typically completed within this period after receipt.)
“Department staff typically completes the initial technical review within five (5) working days of receipt for new files and within three (3) working days of receipt for revised permit files.”
We looked and could not find an official answer yet. Silence is not permission; ask Chemung Township or McHenry 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 Chemung Township publishes no rule on the point, not that none exists. McHenry County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Chemung Township means bringing your own water and power. The kit we’d start with:
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