Septic tank with green lids and drainfield lines in an open trench, installed by Engineered Septics in Texas

Septic engineers · Magnolia, TX · Serving Greater Houston

Septic systems that are engineered, permitted and built right.

Engineered Septics designs, permits and installs septic systems for homes and commercial properties across the Houston area. One team from site evaluation to final inspection.

Get a free quote409-651-3045
  • 10+ years of experience
  • Licensed & insured
  • Residential & commercial
  • Upfront pricing

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Or call 409-651-3045

What we do

Design, permitting and installation

One team from the first site visit to the final inspection.

Engineering blueprints spread on a table for a septic system design

Septic system design

Custom septic designs for your property, built around your soil, lot and water use.

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Technical drawings and a permit seal on a table, representing septic permit paperwork

Septic permitting

We handle the septic permit process with your county so you are not stuck with paperwork.

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Excavator lowering a concrete septic tank into the ground during installation

Septic installation

Professional septic tank and system installation, built to the approved plan.

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Multiple septic tanks with green lids installed on a graded commercial site

Commercial septic systems

Septic design, permitting and installation for businesses and commercial properties.

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See all services and system types →

  • 10+ yearsFrom homes to commercial complexes.
  • Tailored designEvery system fits your site and budget.
  • Upfront pricingClear quotes with no hidden fees.
  • Licensed and insuredYour property is in safe hands.

Our work

Recent projects

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How it works

Four simple steps

  1. 01

    Site evaluation

    We assess your property and soil.

  2. 02

    Design and permit

    We design the system and handle the county permit.

  3. 03

    Installation

    Our crew builds it to the approved plan.

  4. 04

    Inspection

    We coordinate the final inspection.

Curious how septic systems work? Read the technical guide →

FAQs

Common questions

Do I need a permit to install a septic system in Texas?

Yes. New and replacement septic systems generally need a permit and an approved design before installation. We handle the design and guide you through the permitting process with your county.

What is the difference between a conventional and an aerobic septic system?

A conventional system uses a septic tank and a gravel drainfield. An aerobic system adds oxygen to the treatment tank for higher-level treatment and is commonly used in new construction, with drip or spray distribution.

Which areas do you serve?

The greater Houston area, including Houston, Magnolia, Tomball, Spring, The Woodlands, Conroe, Katy, Waller, Willis, Huntsville and College Station, across Harris, Montgomery, Waller, Fort Bend and San Jacinto counties.

How do I get a quote?

Call 409-651-3045 or use the form on this page. Quotes are free.

Need a septic system designed, permitted or installed?

Contact us today for a free quote.

Get a free quote
Call 409-651-3045