Simpson County, Mississippi
Town of D'Lo is a town in Simpson County, Mississippi. Septic permits inside Town of D'Lo come from the state health agency. 7 rules below are quoted from official sources and independently re-checked, most recently on November 5, 2026. Rules for unincorporated land are on the Simpson County page.
Town of D'Lo does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.
Individual on-site wastewater systems serving property inside D'Lo town limits, including Simpson County.
“The On-site Wastewater program develops policy and regulations and provides technical assistance to regional environmentalists in designing and inspecting Individual On-site Wastewater Disposal Systems (IOWDS)”
Installation of an individual on-site wastewater disposal system for property inside D'Lo town limits.
“The Permit is required for a water meter and the installation of an on-site wastewater disposal system.”
New individual on-site wastewater-system installation inside D'Lo town limits.
advance notice before construction: 24 hours (Certified Installer responsibility)
“The Certified Installer is responsible for contacting the Department 24 hours BEFORE beginning construction to schedule an inspection.”
Off-grid wastewater disposal inside D'Lo town limits.
“All wastewater is required to pipe into a central sewer system or a septic system for proper disposal.”
A groundwater-withdrawal well inside D'Lo town limits that requires a Mississippi water-use permit.
“This form is to be filed with the Office of Land and Water Resources (OLWR) before the well is drilled”
A permanent water-meter connection for property inside D'Lo town limits.
sewer-line referral distance: <= 1 mile (MSDH refers applications within this distance to connect)
“You must have a sewer option before a water utility can make a connection to your property.”
On-site wastewater aspects of subdivisions inside D'Lo town limits.
“Staff engineers review and authorize Certified Professional Evaluator's designed On-site Wastewater Disposal Systems, Commercial Developments (Subdivisions, Manufactured, Multi-family, RV Campgrounds/Lodging Parks)”
We looked and could not find an official answer yet. Silence is not permission; ask Town of D'Lo or Simpson 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 D'Lo publishes no rule on the point, not that none exists. Simpson County’s page lists the county offices to call.
Off-grid gear
Going off-grid in Town of D'Lo means bringing your own water and power. The kit we’d start with:
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