About Us

About Modern Septic & Grey Water Systems LLC

Pioneering Modern Septic System Solutions

Modern Septic & Grey Water Systems LLC represents the future of Septic System ownership in Central Texas. Founded by AJ Waldrop, Austin Williams and Quinn Williams in Marble Falls TX, our company emerged from a vision to revolutionize how homeowners and businesses interact with their septic systems. We recognized that while septic systems are traditional in nature, their management and maintenance could be transformed through modern technology, innovative approaches and a client-centric experience.

Our journey began with a simple mission: make septic system ownership easy and protect Central Texas’s water sources. Today, we’re proud to lead the industry in combining advanced technology with exceptional service, offering solutions that range from traditional septic systems to cutting-edge grey water recycling systems.

Our Founders

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.

Quinn Williams

Quinn has worked alongside Austin for the better part of a decade. He is an excavator extraordinaire. He is always on schedule and pushing even the hardest jobs through to completion with an unwavering attention to detail and safety. Quinn has the experience, know-how, and the proper amount of get-er-done to tackle all sizes of septic system installations.

AJ Waldrop

AJ, a true Marble Falls local and community member. AJ grew up in the septic system industry working under his grandfather. His Septic System knowledge is unparalleled. There is not an issue he cannot diagnose nor a problem he can’t solve. He is an expert at customer service, navigation of local codes and the permitting process. AJ is involved in all day-to-day septic services. When you have a septic problem, AJ has the answers. AJ has held septic licensing since 2015.

We understand that every property has unique needs. That’s why we offer customized solutions that consider not just the technical requirements, but also the practical and aesthetic aspects of each project. Our team works closely with clients to design and implement systems that provide both form and function.

Ready to experience the future of septic system management? Contact Modern Septic & Grey Water Systems LLC to learn how our client-centric approach can transform your septic system.

Customer Advantages

Your Septic System Partner for the Future

As we continue to grow and innovate, our focus remains on advancing the industry through technology while maintaining our commitment to exceptional service. We’re constantly exploring new ways to make septic system ownership more efficient, environmentally friendly, and hassle-free for our clients.

Your Septic System Partner For The Future

septic system services

Septic System Installation

A Modern Approach to Septic System Installation. We blend innovative technology with superior customer service to deliver seamless solutions tailored to you. Experience the perfect blend of form and function – because your home deserves nothing less than the best. Choosing us means you’re opting for excellence.

Septic System Maintenance Memberships

At Modern Septic & Grey Water Systems LLC we take great pride in offering personalized maintenance packages to our members for all types of septic systems. Plans range from the state and county minimums to truly hands-free and hassle-free septic ownership.

Greywater Irrigation

Greywater irrigation is the process of capturing greywater from household plumbing and diverting it to an underground pump chamber. We are then able to filter and distribute it through a subsurface drip irrigation system. This allows for efficient watering of flowerbeds, trees, shrubs, and home foundations using a recycled resource!

Septic System Design

At Modern Septic and Grey Water Systems LLC we believe a well-designed septic system is essential. It’s not just about functionality; it’s also about making the most of your space and ensuring everything blends seamlessly into your property. The right septic system design can enhance your home’s value while protecting the environment.

Emergency Septic Service

With Modern Septic & Grey Water LLC’s commitment to prompt emergency septic service, you’ll find peace of mind knowing help is just a call away. Don’t let septic problems ruin your day; trust us for fast and reliable support when you need it most. Your comfort is our priority, making every effort to restore normalcy without delay.

Septic System Inspections

Modern Septic & Grey Water LLC offers real estate septic system inspections prior to closing. Septic system inspections provide buyers with a comprehensive overview of the septic system’s condition and notes any potential health and safety concerns along with costly repairs.

Aerobic Septic System Installation

At Modern Septic & Grey Water Systems LLC, we understand that every detail matters. From the technology we use to the aesthetics of installation, we prioritize what’s important for you and your property.

Septic System Excavation

Excavating in difficult terrain can be a daunting task. High-powered excavators equipped with specialized attachments can break through tough surfaces without breaking a sweat. Even the most challenging soils are no match for Modern Septic & Grey Water Systems LLC

Aerobic Septic System Maintenance

Aerobic septic system problems can lead to significant health risks and environmental hazards if left unchecked. That is why Modern Septic & Grey Water Systems offers aerobic septic system maintenance memberships. We catch the problems before they have a chance to start.

Septic System Planning

When it comes to septic system planning, durability and efficiency are paramount. Our septic system planning process is crafted around high-quality materials designed to withstand the test of time. Modern Septic & Grey Water Systems LLC understands that a reliable septic system is not just about immediate functionality; it’s about long-term peace of mind.

Grey Water Systems

Greywater can constitute a significant portion of household waste. Imagine redirecting tens of thousands of gallons annually from the trash to your garden or landscape. Doing so not only saves money, keeps the lawn green and circumvents water restrictions; it conserves fresh drinking water and reduces strain on a rapidly depleting water supply.

Aerobic Septic system Repair

When your aerobic septic system needs repairs, it disrupts daily life and poses potential health and environmental risks. You need a reliable partner by your side. At Modern Septic & Grey Water LLC our dedicated team is always ready to respond to your needs, no matter the hour.

Septic System Maintenance

Preventive septic system maintenance is essential for ensuring longevity and efficiency. Regular check-ups can detect minor issues before they escalate into costly repairs. By scheduling routine septic system maintenance, Modern Septic & Grey Water Systems can identify early signs of trouble.

Aerobic Septic Service

When an aerobic septic system emergency strikes, it can feel overwhelming. The stress of an aerobic septic system emergency often leaves you unsure of what to do next. That’s where Modern Septic and Grey Water Systems LLC comes in. Our team provides immediate aerobic septic system services.

Septic System Repairs

Efficient septic system repairs are crucial. Time is of the essence, and a swift response can prevent further damage to your system. At Modern Septic & Grey Water Systems LLC our team is trained to diagnose issues quickly.

Modern Septic & Grey Water Systems LLC:

Transforming septic systems through innovation, client-centric technology, and environmental responsibility.

Randy Raymond

February 10, 2026

Great service and nice people. Always very responsive if I have questions or concerns. Highly recommend.

Frank Spina

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

Bryan Gilbert

Communication before and after the maintenance checkup was excellent. Logan was on time and very thorough with his assessment. Thank you!

Silvia Cowen

February 6, 2026

JUNK YARD KID

February 5, 2026

Austin knows septic and gets it done asap! Thank you!!

Randolph Kanak

February 4, 2026

AJ was super helpful and knowledgeable. He came out when he said when I couldn't get other companies to answer the phone. I will definitely use them again.

M Simmons

Stephen Westerman

February 1, 2026

Marty Gauthier

January 31, 2026

Quick response and high quality work. Appreciate it.

Rob Myers

January 30, 2026

Quick response, professional service, great communication before, during, and after the service. Will use them again!

Erica Thomas

January 29, 2026

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.

Taylor Hall

January 26, 2026

good communication and smooth repair process