Licensed Septic Companies in Seneca, SC
22 septic companies serve Seneca, South Carolina, and 22 of them hold a South Carolina septic license or certification matched to the South Carolina Department of Environmental Services list (data as of October 2026).
Septic services in Seneca
Guides: Septic tank pumping · Septic system installation · Installation cost · Pumping cost
22 septic companies in Seneca
-
Amity Builders Inc
403 Coneross Avenue, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37219 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Apex Landworks
350 Equestrian Dr, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #OSWWI0512 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Baumgarner Builders
1725 Industrial Park Pl, Seneca, SC 29672 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #04-367-04231 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Crystal Sewer & Water
413 Timber Cove Dr, Seneca, SC 29672 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37254 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Darrin Nichols
340 Winding Branch Lane, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37242 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Dba Duvall Builders & Grading
2134 Sandifer Blvd., Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37089 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Greenstone Construction LLC
210 W North Second Street, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37201 (South Carolina Department of Environmental Services, verify)
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37280 (South Carolina Department of Environmental Services, verify)
- Licensed: South Carolina DES Licensed Septic Pumper/Hauler · #37-368-37016 (South Carolina Department of Environmental Services, verify)
Per state license: Pumping · Installation
-
Griffin Waste
930 E. Main St, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Pumper/Hauler · #OSWWP0102 (South Carolina Department of Environmental Services, verify)
Per state license: Pumping
-
Hendricks grading llc
149 Kids Ln, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #OSWWI0366 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Holbrooks Grading & Land. Inc.
107 Winterbrook Cir, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37216 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
James R Moore Sr
9112 West Oak Hwy, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37267 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Major Contracting Services Inc
209 Old Salem Rd, Seneca, SC 29672 · Oconee County
- Licensed: South Carolina DES Licensed Septic Pumper/Hauler · #OSWWP0063 (South Carolina Department of Environmental Services, verify)
Per state license: Pumping
-
Matt Kanagy Construction Inc.
310 Sitton Shoals Rd, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #OSWWI0647 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Outdoor Restorations
415 Hope Ave, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #OSWWI0275 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Painter Land Development LLC
550 Gentry Rd, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 3) · #OSWWI0840 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Palmetto Upstate Services LLC
399 Kelly Mill Rd, Seneca, SC 29672 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37262 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Philllips Construction & Gradi
619 Tall Oak Trail, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37259 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
R Smith Grading LLC
132 Courtenay Smith Drive, Seneca, SC 29672 · Richland County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #OSWWI0365 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Sword'S Grading
6252 Oak Valley Rd, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37154 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
The Chandler Group Inc.
15883 Wells Hwy, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37232 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
TM Landscape Solutions
1006 Martin Lake Dr, Seneca, SC 29678 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #OSWWI0715 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
-
Talley Builders Inc
295 Stamp Creek Landing Rd, Seneca, SC 29672 · Oconee County
- Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #37-367-37064 (South Carolina Department of Environmental Services, verify)
Per state license: Installation
No phone on the state list
No listings match those filters.
Septic licensing in South Carolina
South Carolina licenses septic installers in three tiers and licenses pumpers; licenses renew yearly. State law (S.C. Code 30-2-50) bars using this data for commercial solicitation. The South Carolina Department of Environmental Services issues these credentials: Tier 1, Tier 2 and Tier 3 installer licenses; Pumper/hauler license.
Permits for new systems, replacements and most repairs are issued locally. Ask the contractor which office handles Seneca and whether the permit fee is in their quote.
South Carolina septic licensing: agencies, license types and how to check a license →
Septic companies in Seneca: common questions
How many licensed septic companies are in Seneca, SC?
22 septic companies serve Seneca, South Carolina, and 22 of them hold a South Carolina septic license or certification matched to the South Carolina Department of Environmental Services 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 South Carolina?
South Carolina licenses septic installers in three tiers and licenses pumpers; licenses renew yearly. State law (S.C. Code 30-2-50) bars using this data for commercial solicitation. The licensing body is the South Carolina Department of Environmental Services.
Which companies pump septic tanks in Seneca?
3 of the 22 listings in Seneca offer septic tank pumping, either on their own website or under a state pumper license. Use the service filter above to show only those companies.
Which companies install septic systems in Seneca?
20 listings in Seneca install septic systems. New systems and replacements need a permit, so ask each installer to handle the permit and to show their South Carolina license.
How do I check a septic contractor's license in South Carolina?
Use the South Carolina Department of Environmental Services's lookup (https://scdes.maps.arcgis.com/apps/webappviewer/index.html?id=9585c719f5ea40e486f40e498a49dad3) and search the contractor's name or license number. Our guide to checking a septic license walks through it.