Union County, Arkansas
El Dorado is a city in Union County, Arkansas. El Dorado adopts its own zoning, so inside its limits El Dorado’s rules apply, not the county’s. Septic permits inside El Dorado come from the state health agency. 11 rules below are quoted from official sources and independently re-checked, most recently on November 7, 2026. Rules for unincorporated land are on the Union County page.
Most construction and renovation work inside El Dorado city limits.
“Whether you are looking to build a new facility or renovate an existing structure inside El Dorado city limits, a permit will be required for most work.”
Building projects and renovations inside El Dorado city limits.
“The City has adopted the Arkansas Fire Prevention Code. Building projects and renovations must comply with this statewide code, even in rural and unincorporated areas.”
Land inside El Dorado city limits.
“The Planning & Zoning Commission meets on the 3rd Tuesday of the month at Noon at City Hall.”
El Dorado does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Onsite wastewater systems inside El Dorado city limits.
“For those cities or counties with Authorized Agents, the Authorized Agent shall be the Authorized Agent of the Department. In the event that an Authorized Agent has not been designated for a city or county, applications for onsite wastewater systems shall be made to the Department.”
Construction, alteration, repair, or extension of onsite wastewater systems inside El Dorado city limits.
“Permits for construction and operation of onsite wastewater systems shall be obtained in accordance with the RULES PERTAINING TO ONSITE WASTEWATER SYSTEMS prior to the construction, installation or modification of the Onsite Wastewater System.”
Operation of onsite wastewater systems inside El Dorado city limits.
“It shall be unlawful for any person, firm, corporation, association, municipality or governmental agency to begin operation of any onsite wastewater system until such system has been inspected and approved by the Department or its Authorized Agent and the owner has first obtained a Permit for Operation issued by the Department or its Authorized Agent.”
Premises inside El Dorado city limits meeting the state rule's available-sanitary-sewer condition.
“No privies, onsite wastewater systems or other receptacles for human excreta shall be constructed, maintained, or used on the premises.”
Premises inside El Dorado city limits where a sanitary sewer is available within the stated distance and can be connected without crossing another person's property.
sanitary sewer distance: <= 300 feet (Measured from the point where the sewer exits the building on the property owner's property; sewer must be available and connection must not cross another person's property.)
“All premises shall be connected to a sanitary sewer when within 300 feet from the point where the sewer exits a building on the property owner’s property and available to said premises when connection can be made without crossing another person's property.”
Proposed subdivisions inside El Dorado city limits that will use onsite wastewater systems for all or part of their lots or tracts.
“All subdivision plans, which are proposed to utilize standard onsite wastewater systems as a method of wastewater treatment for all or part of the lots or tracts in said subdivision, shall be submitted to the Arkansas Department of Health for review and approval of the overall plan for the utilization of onsite wastewater systems.”
Individual onsite-wastewater permit applications inside El Dorado city limits.
onsite wastewater plan-review fee: 30-150 USD (Varies by residential structure size; alteration, repair, or extension fee is $30.)
“A fee shall be levied for the review of each permit. Permit fees shall be made payable to the Department. The review fee shall be paid before the issuance of Part 1 of the Permit Application.”
Onsite wastewater construction and operation inside El Dorado city limits.
“Part I of the Permit is the Permit for Construction. Part I of the Permit Application form shall be completed by a Designated Representative and approved by the Department or its Authorized Agent prior to initiating construction.”
We looked and could not find an official answer yet. Silence is not permission; ask El Dorado or Union 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 El Dorado publishes no rule on the point, not that none exists. Union County’s page lists the county offices to call.
Off-grid gear
Going off-grid in El Dorado means bringing your own water and power. The kit we’d start with:
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