Author: Austin Williams

Austin started his first landscaping and excavation company at 20 years old. He spent the next 12 years perfecting the art of dirt work at both a commercial and high-end residential level. Licensed since 2019, he incorporates many of his lessons and techniques from the excavation world into all our septic systems such as the often-overlooked aesthetic value, proper drainage and spatial usage. He is always in search of ways to improve our final product and the customer experience.

Common Aerobic Septic System Problems (& How to Prevent Them)

See Our Services Contact Us Aerobic septic systems are a reliable and environmentally friendly solution for wastewater treatment in residential and commercial properties. By introducing oxygen into the treatment process, these systems support beneficial bacteria that break down waste more effectively than traditional anaerobic systems – but like any mechanical system, they’re not immune to […]

Septic Installation in Spicewood, Texas: How We Tackle Hard Rock, Tough Geology & Complex Septic Designs

See Our Services Contact Us When homeowners search for septic installation in Spicewood, Texas, they’re often surprised to learn just how challenging the local terrain can be. The Hill Country’s rugged beauty comes with equally rugged geology—conditions that demand an experienced Spicewood septic contractor with the right equipment, training, and design expertise. At Modern Septic […]

Septic System Sale Inspections: Why I Recommend Them for Every Home Buyer and Seller in Central Texas

See Our Services Contact Us Hi, I’m Austin Williams, founder of Mod Septics. When people think about buying or selling a home, septic systems usually aren’t top of mind — until something goes wrong. One of the most important steps I recommend during any real estate transaction involving a septic system is a septic system […]

Pools and Septic Systems in Texas: What Austin-Area Homeowners Must Know About Setbacks & Septic Modifications

See Our Services Contact Us Building a pool in Austin, Lakeway, Bee Cave, Dripping Springs, Spicewood, or Westlake requires more than choosing the right design — it requires making sure your septic system and your pool can safely coexist. Texas has strict rules for septic system and pool setbacks, and overlooking them can lead to […]

A Homeowner’s Guide to Aerobic Septic System Laws & Regulations in Texas

See Our Services Contact Us For homeowners in the Central Texas area, an aerobic septic system is a critical investment in property value and environmental responsibility. Unlike traditional septic tanks, these advanced systems require oxygen to treat wastewater to a higher standard, often making them necessary in areas with poor soil, small lots, or proximity […]

Clay Gourley

October 31, 2025

THANKS..!

Frank Spina

October 28, 2025

They were very informative about the system and options, as well as keeping us in the loop on the work. Very fair.

Kelly Halls

October 24, 2025

AJ is top notch. He knows his business and has always been prompt, polite and professional.

Guy Mehner

October 23, 2025

joe donahue

October 20, 2025

ames willis

Austin with Modern Septic & Grey Water Systems knocked my project out of the park and couldn't ask for more of a professional, highly knowledgeable, and prompted company and owner. As a GC, it is dificult to find good subs to trust that they will perform to mine and my clients satisfaction. Austin with MOD will be my go-to for all of my excavation and septic needs. Recommended highly.

D B

October 17, 2025

Update Oct 2025 We like knowing that Modern Septic is monitoring our system and they follow a schedule to routinely come by and make sure things are good. Give them a call and let them make your life easier by not worrying about your Septuc system. We have been long term customers and highly recommend Modern Septic. In addition to being very knowledgeable, they are polite and very customer-focused. I trust these guys and know they are on the ball. This is one aspect of home ownership that we don’t have to handle…we just call the experts at Modern Septic.

Jody French

September 25, 2025

Great experience. Friendly, knowledgable, helpful and scheduled me quickly.

Mike Morey

September 24, 2025

Very responsive and gave me more information than our septic installer

Amanda Ritz

September 19, 2025

AJ was great at communicating what time he’d be arriving and was great at explaining every issue he ran into with my system. I hired them for my yrly maintenance contract due to the great service.

Anthony Escobar

September 18, 2025

Quality work was completed as promised. Communication was great throughout the process. Dylan answered all my questions was a great experience.

Erica Thomas

I’ve been using this company for years. AJ is absolutely the best-professional, responsive, trustworthy, and reasonably priced. They’ve done a great job keeping my aerobic septic system in top notch shape.