Butler County, Kansas
Benton Township is a township in Butler County, Kansas. Septic permits inside Benton Township come from Butler County (Butler County Environmental Health Division · 316-322-4325). 9 rules below are quoted from official sources and independently re-checked, most recently on October 30, 2026. Rules for unincorporated land are on the Butler County page.
Benton Township does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Construction inside Benton township on unincorporated land (outside City of Benton limits), under the Butler County Building Code 2016
“butler county building code 2016 as adopted by the butler county board of commissioners by resolution 16-06 on the 23rd of february, 2016”
County zoning districts (including AG-40, AG-80 and Rural Residential) that apply to unincorporated land inside Benton township
“these regulations shall apply to all unincorporated territory within butler county, kansas.”
Rural Residential (RR) district lots inside Benton township on unincorporated land
minimum lot size (septic or alternative system, public water service): >= 3 acres (with the use of an alternative waste treatment system or septic system and service supplied by public water) · minimum lot size (lagoon proposed): >= 5 acres (if a lagoon is proposed) · maximum lot size: <= 10 acres
“rural residential-rr-article 8 minimum lot size is 3 acres with the use of an alternative waste treatment system or septic system and service supplied by public water. minimum lot size is 5 acres if a lagoon is proposed. maximum lot size is 10 acres.”
“tracts with at least 40 acres located in the ag-40 district and tracts with at least 80 acres located in ag-80 district are required to have a minimum acreage that is equivalent to a quarter of a quarter section or a half of a quarter section respectively.”
AG-40 and AG-80 zoned lots with residential dwellings inside Benton township on unincorporated land
front setback for residential dwelling: 75 feet · side setback for residential dwelling: 50 feet · rear setback for residential dwelling: 50 feet
“ag-40 and ag-80-setbacks as measured from property lines. 75 feet from the front property line for any residential dwelling. structures used for agricultural purposes are not exempt from front yard setback requirements. 50 feet from the side and rear property lines for any residential dwelling.”
“rural residential-setbacks as measured from property lines and easements: 75 feet from front property line. 50 feet from side and rear property lines for any residential dwelling. 25 feet from side or rear property lines for any non-residential accessory structure.”
Onsite sewage (septic) systems on land inside Benton township on unincorporated land, outside City of Benton limits
minimum separation from water wells, ponds and streams: >= 50 feet · minimum separation from property lines, public water lines and buildings: >= 25 feet
“all sewage systems must be installed by a licensed installer registered by the division of environment.”
Structures used for agricultural purposes on AG-40 and AG-80 land inside Benton township on unincorporated land
“per k.s.a.12-758(b) structures used for agricultural purposes are not subject to the side and rear yard setback requirements.”
Building, electrical, mechanical and plumbing permit fees for construction inside Benton township on unincorporated land
“building, electrical, mechanical, plumbing code permit fees are set forth by resolution 99-02 that being table 1-a of the 1997 uniform building code, adopted 11th january, 1999 by the board of county commissioners”
We looked and could not find an official answer yet. Silence is not permission; ask Benton Township or Butler 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 Benton Township publishes no rule on the point, not that none exists. Butler County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Benton Township means bringing your own water and power. The kit we’d start with:
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