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Williamston, South Carolina

Licensed Septic Companies in Williamston, SC

7 septic companies serve Williamston, South Carolina, and 7 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 Williamston

Guides: Septic tank pumping · Septic system installation · Installation cost · Pumping cost

7 septic companies in Williamston

  • A-1 Septic & Drainfield Repair

    104 Cromer Rd, Williamston, SC 29697 · Anderson County

    • Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #04-367-04250 (South Carolina Department of Environmental Services, verify)
    • Licensed: South Carolina DES Licensed Septic Pumper/Hauler · #04-368-04183 (South Carolina Department of Environmental Services, verify)

    Per state license: Pumping · Installation

    (864) 353-2564

  • Ace Plumbing, Electric, Heating and Air LLC

    5320 Hwy 81 N, Williamston, SC 29697 · Richland County

    • Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #OSWWI0668 (South Carolina Department of Environmental Services, verify)

    Per state license: Installation

    (864) 556-2952

  • Jc Construction, Grading, & Clearing LLC

    1738 Campbell Rd, Williamston, SC 29697 · Anderson County

    • Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #OSWWI0021 (South Carolina Department of Environmental Services, verify)

    Per state license: Installation

    (864) 760-8143

  • Porter's Backhoe, LLC

    706 Beaverdam Rd, Williamston, SC 29697 · Anderson County

    • Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #OSWWI0316 (South Carolina Department of Environmental Services, verify)

    Per state license: Installation

    (864) 561-6332

  • Skidder Construction

    2 Dottie Ct, Williamston, SC 29697 · Anderson County

    • Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #04-367-04199 (South Carolina Department of Environmental Services, verify)

    Per state license: Installation

    (864) 505-9591

  • Tharp Plumbing

    226 Cox Dr, Williamston, SC 29697 · Anderson County

    • Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #OSWWI0328 (South Carolina Department of Environmental Services, verify)

    Per state license: Installation

    (864) 303-8700

  • Up Top Septic

    10 Coker Cir, Williamston, SC 29697 · Anderson County

    • Licensed: South Carolina DES Licensed Septic Installer (Tier 2) · #OSWWI0482 (South Carolina Department of Environmental Services, verify)

    Per state license: Installation

    (864) 915-5082

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 Williamston 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 Williamston: common questions

How many licensed septic companies are in Williamston, SC?

7 septic companies serve Williamston, South Carolina, and 7 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 Williamston?

1 of the 7 listings in Williamston 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 Williamston?

7 listings in Williamston 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.