Licensed Septic Companies in St. Tammany Parish, LA
15 septic companies serve St. Tammany Parish, Louisiana, and 15 of them hold a Louisiana septic license or certification matched to the Louisiana Department of Health list (data as of October 2026).
Septic services in St. Tammany Parish
Guides: Septic system installation · Septic inspection · Septic repair · Drain field repair · Installation cost · Pumping cost
15 septic companies in St. Tammany Parish
Slidell 4
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Acadian Environmental Service LLC
Slidell, LA 70460
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #30301 (Louisiana Department of Health, verify)
Per state license: Installation
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Cooper Septic Service
202 Brett Dr, Slidell, LA 70461
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #31937 (Louisiana Department of Health, verify)
From their website: Risers & lids Per state license: Installation
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Parker Septic Solutions, LLC
Slidell, LA 70460
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #40114 (Louisiana Department of Health, verify)
Per state license: Installation
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SC Inc. Precast
153 Industrial Dr, Slidell, LA 70460
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #31782 (Louisiana Department of Health, verify)
Per state license: Installation
Covington 3
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Artesian Services LLC
19205 LA-40, Covington, LA 70434
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #197 (Louisiana Department of Health, verify)
Per state license: Installation
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Brooks Plumbing & Septic Services, LLC
N Madison St, Covington, LA 70433
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #32146 (Louisiana Department of Health, verify)
From their website: Installation · Inspection · Repair · Drain field
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Pounds Sewer Systems
20115 Garland St, Covington, LA 70433
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #479 (Louisiana Department of Health, verify)
From their website: Installation
Abita Springs 2
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Farmer Plumbing LLC
Abita Springs, LA 70420
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #32127 (Louisiana Department of Health, verify)
Per state license: Installation
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Home, Land, & Septic Construction LLC
Abita Springs, LA 70420
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #40030 (Louisiana Department of Health, verify)
Per state license: Installation
Pearl River 2
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Brewin Septic Tank LLC
39207 Pine St, Pearl River, LA 70452
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #31786 (Louisiana Department of Health, verify)
Per state license: Installation
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C&J Sewer Treatment
Pearl River, LA 70452
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #30291 (Louisiana Department of Health, verify)
Per state license: Installation
Convington 1
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MR Septic Tank Installation Services, LLC
Convington, LA 70433
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #40055 (Louisiana Department of Health, verify)
Per state license: Installation
Folsom 1
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Gary's Septic Tank & Backhoe Service
Folsom, LA 70437
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #30187 (Louisiana Department of Health, verify)
Per state license: Installation
Lacombe 1
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Ike Laurent
Lacombe, LA 70445
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #40059 (Louisiana Department of Health, verify)
Per state license: Installation
Mandeville 1
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Honey Dippers
Mandeville, LA 70448
- Licensed: Louisiana LDH Licensed Onsite Wastewater (Septic) Installer (Basic; Combination) · #40031 (Louisiana Department of Health, verify)
Per state license: Installation
No listings match those filters.
Septic licensing in Louisiana
The Louisiana Department of Health publishes its active installer list, which marks installers who can also maintain mechanical (aerobic) plants. The Louisiana Department of Health, Onsite Wastewater Program issues these credentials: Basic installer; Combination installer; Maintenance provider.
Permits for new systems, replacements and most repairs are issued locally. Ask the contractor which office handles St. Tammany Parish and whether the permit fee is in their quote.
Louisiana septic licensing: agencies, license types and how to check a license →
Septic companies in St. Tammany Parish: common questions
How many licensed septic companies are in St. Tammany Parish, LA?
15 septic companies serve St. Tammany Parish, Louisiana, and 15 of them hold a Louisiana septic license or certification matched to the Louisiana Department of Health list (data as of October 2026). Each license badge on this page names the agency and links to its lookup so you can confirm it.
Who licenses septic contractors in Louisiana?
The Louisiana Department of Health publishes its active installer list, which marks installers who can also maintain mechanical (aerobic) plants. The licensing body is the Louisiana Department of Health, Onsite Wastewater Program.
Which companies install septic systems in St. Tammany Parish?
15 listings in St. Tammany Parish install septic systems. New systems and replacements need a permit, so ask each installer to handle the permit and to show their Louisiana license.
How do I check a septic contractor's license in Louisiana?
Use the Louisiana Department of Health, Onsite Wastewater Program's lookup (https://ldh.la.gov/page/627) and search the contractor's name or license number. Our guide to checking a septic license walks through it.