Bolthole Index county-legal census · checked 2026-08-08
Septic permitting in Louisiana is state-run, administered by state agencies across all 64 counties.Every entry below names the approving authority for that county, cited to the authority’s own page.
Septic rules change and some cities run their own programs — treat this as a verified starting point, not legal advice. All states → Louisiana water rights & wells → Full Louisiana profile →
64 counties · state agency · permit status scouted for 24
Louisiana Department of Health (parish health unit)
Acadia Parish Police Jury Building Permits ↗Louisiana Department of Health - Allen Parish Health Unit (Office of Public Health)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health (via Ascension Parish Health Unit sanitarian)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health (Assumption Parish Health Unit sanitarian)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health - Onsite Wastewater Program (parish health unit)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health - Beauregard Parish Health Unit
Louisiana Dept of Health, OPH Onsite Wastewater - Directory of Parish Offices ↗Louisiana Department of Health - Bienville Parish Health Unit (Office of Public Health)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health - Onsite Wastewater Program (via Bossier Parish Health Unit sanitarian)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health - Office of Public Health (Onsite Wastewater / Sanitarian Services), Caddo Parish office
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health (Calcasieu Parish Health Unit)
LSU AgCenter - Detailed Explanation of Permitting Requirements ↗Louisiana Department of Health, Bureau of Sanitarian Services (Onsite Wastewater Program), administered via the parish health unit
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Cameron Parish Health Unit (Bureau of Sanitarian Services)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health, Bureau of Sanitarian Services (Catahoula Parish Health Unit)
Louisiana Department of Health — Onsite Wastewater Program ↗Louisiana Department of Health - Onsite Wastewater Program (Claiborne Parish Health Unit)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health (Concordia Parish Health Unit)
Louisiana Department of Health - Onsite Wastewater ↗Louisiana Department of Health, Office of Public Health - Onsite Wastewater Program (De Soto Parish sanitarian/health unit)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health - East Baton Rouge Parish Health Unit
Louisiana Department of Health - Onsite Wastewater Parish Office Directory ↗Louisiana Department of Health, Office of Public Health - Onsite Wastewater Program (East Carroll Parish Health Unit)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, East Feliciana Parish Health Unit
Louisiana Department of Health, East Feliciana Parish directory ↗Louisiana Department of Health - Evangeline Parish Health Unit
Evangeline Parish Health Unit (LDH) ↗Louisiana Department of Health, Onsite Wastewater Program, administered via the Franklin Parish health unit
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health - Grant Parish Health Unit
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health (Iberia Parish Health Unit)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health - Onsite Wastewater Program (via Iberville Parish Health Unit)
LDH Iberville Parish Health Unit ↗Louisiana Department of Health, Office of Public Health (Jackson Parish Health Unit sanitarian)
Louisiana Department of Health - Jackson Parish Health Unit ↗Louisiana Department of Health, Office of Public Health, Bureau of Sanitarian Services (permitting via the Jefferson Parish health unit sanitarian)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Onsite Wastewater Program via Jefferson Davis Parish Health Unit
Louisiana Department of Health Onsite Wastewater Program ↗Louisiana Department of Health, Bureau of Sanitarian Services (via Lafayette Parish Public Health Unit)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health - Lafourche Parish Health Unit
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health - Onsite Wastewater Program
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health - Onsite Wastewater Program (Lincoln Parish Health Unit sanitarian)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health - Livingston Parish Health Unit
Louisiana Department of Health - Livingston Parish Health Unit ↗Louisiana Department of Health – Office of Public Health (Madison Parish Health Unit sanitarian)
Louisiana Department of Health – Onsite Wastewater Program ↗Louisiana Department of Health (LDH) Onsite Wastewater Program - Morehouse Parish Health Unit
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health (LDH) - Natchitoches Parish Health Unit / Environmental Health
Natchitoches Parish Planning and Zoning ↗Louisiana Department of Health (Orleans Parish Health Unit)
Louisiana Department of Health - Wastewater ↗Louisiana Department of Health (LDH), Office of Public Health, via the Ouachita Parish Health Unit
Louisiana Department of Health — Office of Public Health, Onsite Wastewater ↗Louisiana Department of Health, Office of Public Health - Plaquemines Parish Health Unit (Sanitarian Services)
Plaquemines Parish - Sanitarian Services ↗Louisiana Department of Health, Office of Public Health (via Pointe Coupee Parish Health Unit Sanitarian)
Louisiana Department of Health - Pointe Coupee Parish Health Unit ↗Louisiana Department of Health, Office of Public Health, Rapides Parish Health Unit
Louisiana Department of Health Onsite Wastewater Program ↗Louisiana Department of Health (Office of Public Health) - Red River Parish Health Unit
Red River Parish Police Jury - Building Permit Information (Permit Applications bulletin) ↗Louisiana Department of Health (LDH) Office of Public Health, via Richland Parish Health Unit
Louisiana Department of Health Onsite Wastewater Program ↗Louisiana Department of Health (LDH) Office of Public Health - via the Sabine Parish Health Unit
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health (LDH) Onsite Wastewater - St. Bernard Parish Health Unit / Sanitarian Services
Louisiana Department of Health - Onsite Wastewater Program ↗St. Charles Parish Health Unit (Louisiana Department of Health, Office of Public Health)
LDH - St. Charles Parish ↗Louisiana Department of Health, Office of Public Health (St. Helena Parish Health Unit)
St. Helena Parish Environmental Health - Sewage Requirements & Standards ↗Louisiana Department of Health - St. James Parish Health Unit (Bureau of Sanitarian Services)
LDH - St. James Parish Health Unit ↗St. John the Baptist Parish Health Unit (Louisiana Department of Health, Office of Public Health)
LDH - St. John the Baptist Parish Health Unit ↗Louisiana Department of Health – Office of Public Health (St. Landry Parish Health Unit Sanitarian)
Louisiana Department of Health – Onsite Wastewater Program ↗Louisiana Department of Health (LDH) Onsite Wastewater Program, via St. Martin Parish Health Unit
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health (St. Mary Parish Health Unit)
Louisiana Department of Health, Office of Public Health ↗St. Tammany Parish Department of Environmental Services
St. Tammany Parish Department of Environmental Services ↗Louisiana Department of Health, Office of Public Health (via Tangipahoa Parish Health Unit)
Louisiana Department of Health - Onsite Wastewater Homeowner Packet ↗Louisiana Department of Health, Bureau of Sanitarian Services (Onsite Wastewater Program, via Tensas Parish Health Unit)
Louisiana Department of Health — Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health (Terrebonne Parish Health Unit)
Louisiana Dept of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health — Onsite Wastewater Program (Union Parish Health Unit / Sanitarian)
Louisiana Department of Health Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health / Vermilion Parish Health Unit
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health (LDH) - Vernon Parish Health Unit
Vernon Parish Police Jury - Building Permits ↗Louisiana Department of Health, Office of Public Health - Onsite Wastewater Program (Washington Parish Health Unit)
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health (LDH) - local Parish Public Health Unit / sanitarian services
LSU AgCenter - Detailed Explanation of Permitting Requirements ↗Louisiana Department of Health, Office of Public Health (via West Baton Rouge Parish Health Unit)
Louisiana Sanitary Code Part XIII - Sewage Disposal (LDH) ↗Louisiana Department of Health, Bureau of Sanitarian Services - Onsite Wastewater Program
Louisiana Department of Health - Onsite Wastewater Program ↗Louisiana Department of Health, Office of Public Health, West Feliciana Parish Health Unit
Louisiana Department of Health Onsite Wastewater Program ↗Louisiana Department of Health (LDH), Office of Public Health — Bureau of Sanitarian Services / Winn Parish Health Unit
Louisiana Department of Health — Onsite Wastewater Program ↗Every county here has a full profile — its index score, water, land prices, and the rest of its building rules. See the Louisiana state page for all counties ranked, or the national septic guide.
General guidance, not legal advice. Off-grid, building, and land-use rules are often set at the county level and change often. Verify with your county and state before acting. Data reviewed 2026-06-26.
