Wood County, Wisconsin
Town of Cary is a town in Wood County, Wisconsin. Septic permits inside Town of Cary come from Wood County (Wood County Department of Planning & Zoning, Sanitary Program · (715) 421-8466). 9 rules below are quoted from official sources and independently re-checked, most recently on October 29, 2026. Rules for unincorporated land are on the Wood County page.
Land inside Cary town subject to Wood County Ordinance #700; district placement is determined by the official zoning map.
districts: Forestry and Recreation district; Unrestricted district (Boundaries are shown on the official zoning map dated November 14, 1934.)
“the territory included in the boundaries of the following towns, to wit: arpin, auburndale, cameron, cary, cranmoor, dexter, grand rapids, hanson, hiles, marshfield, milladore, port edwards, remington, richfield, rock, rudolph, saratoga, seneca, sherry, sigel, and wood, are hereby divided into two classes of use districts as follows, to wit: (a) forestry and recreation district, and (b) unrestricted district.”
Private septic systems serving land inside Cary town.
“the wood county planning & zoning office is the county agency responsible for the regulation and inspection of septic systems as well as the issuance of sanitary permits and any code enforcement that may be required.”
Installation, extension, enlargement, conversion, structural alteration, or change of use of a private onsite wastewater treatment system inside Cary town.
permit completion period: 2 years (Unless renewed and renewal fee is paid before expiration.)
“no person shall install, extend, enlarge, convert, structurally alter or change the use of a powts or a powts component without appropriate sanitary permits and without full compliance with the provisions of this ordinance.”
Private onsite wastewater treatment systems inside Cary town.
maintenance inspection interval: per 3 years (Applies to POWTS with treatment, holding, or dispersal components.)
“all powts that utilize a treatment, holding or dispersal component shall be visibly inspected at least once every three (3) years to determine if the powts is performing as designed, if the component needs to be serviced, and whether wastewater or effluent from the powts is ponded on or discharged to the surface of the ground.”
Private onsite wastewater treatment systems inside Cary town.
“no person shall use any powts before the newly installed or modified system is inspected by the county and the certificate of compliance has been issued.”
New, revised, or added driveway/access points from land inside Cary town onto a Wood County Trunk Highway.
“any time a new access point is needed off of a county trunk highway, you will need to obtain a "highway access control permit". you must also obtain the permit if a revision or addition is made to any existing driveway/access point.”
Development inside Cary town that is within a shoreland or floodplain zone.
“approval by the wood county planning and zoning office is required prior to starting work within a shoreland or floodplain zone for the following projects:”
Owners of septic systems inside Cary town.
septic system program fee: 25 USD (Billed once every three years to owners of septic systems.)
“in order to cover the cost of this program the county has a $25 septic system program fee for all owners of septic systems to be paid 1 time every 3 years.”
Town of Cary does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Construction or substantial renovation of permanent structures inside Cary town.
“wisconsin law requires all municipalities to issue building permits to construct or substantially renovate permanent structures. a county sanitary permit is required before the municipality can issue a building permit.”
We looked and could not find an official answer yet. Silence is not permission; ask Town of Cary or Wood 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 Town of Cary publishes no rule on the point, not that none exists. Wood County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Town of Cary means bringing your own water and power. The kit we’d start with:
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