On-Site Sewage Facilities (OSSF) Site/Soil Evaluators


The Comal County Engineer's Office does not endorse or promote any particular OSSF Installer. This list is provided solely as a courtesy to the public.

Alamo Septic Designs, LLC

April Porter

    • OS0026816
    • 775 Old Lehmann Rd
    • Seguin, TX 78155
    • Phone: (512) 801-9837
    • phonePhone

AusTex Development

Bull's Eye Septic Systems

    • Keith Gott
    • OS0006286 / 0024419
    • P.O. Box 182
    • Waring, TX 78074
    • Phone: (210) 710-3350
    • phonePhone

Cain Septic Design

Central Texas Septic & Aerobics

D.L. Davidson Contractors

David Graham, P.E.

    • P.O. Box 1284
    • Boerne, TX 78006
    • Phone: (800) 869-2783
    • phonePhone

David Seagraves, Geologist, R.S.

    • OS6893 / PG3917
    • 723 Nakoosa Dr
    • San Antonio, TX 78260
    • Phone: (830) 438-3344
    • phonePhone
    • Cell: (210) 508-9353
    • cellCell

Environmental Concepts, LLC

Envirowell Services

Flugrath Construction

    • David Flugrath
    • OS9620 / 586 / 1648
    • 1235 Lone Oak Drive
    • New Braunfels, TX 78132

Greg Johnson, P.E., R.S.

Hays Environmental Engineering, Inc.

Hill Country Septic and Construction

JB Septic Systems, Inc.

Johnnie J. Bohuslav, P.E./R.S.

    • 129 Maderas
    • Seguin, TX 78155
    • Phone: (830) 560-1659
    • phonePhone

Keith C. Strimple, P.E.

    • P.O. Box 391
    • McQueeney, TX 78123
    • Phone: (830) 560-3200
    • phonePhone

Ken Eastman Construction

Land Stewardship Services, LLC

Monica Wallace, S.E.

Plan-It Septic Design & Services, LLC

Septic Systems Express

Shell Engineering Group

South Texas Wastewater Treatment

Stephen Jetton, R.S.

    • 1400 Clarewood Dr
    • San Marcos, TX 78666
    • Phone: (512) 392-3700
    • phonePhone
    • Cell: (512) 757-1259
    • cellCell

Stephen Mangold, P.E.

Texas Super Septic

Vern Richard Schrank, P.E.

    • 2619 Christoper
    • Galveston, TX 77551
    • Phone: (830) 899-4577
    • phonePhone

Virginia Castro

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