About Lilly’s Septic Service

Lilly’s Septic Tank Service, provides quality environmentally conscious expert Septic Tank Pumping and Septic System Sale Inspections, Pump Replacements, Pump alarm calls, Minor Septic System Repair,  to residential and commercial clients in King & Pierce Counties.

Owner Darren McCullough has been professionally servicing customers in King County for 20 years.  Darren is a Certified Master Installer, Certified King County Operations & Maintenance Professional, Certified Real Estate sale Inspection Professional and Certified Septic System Pumping Professional for King, Pierce, Snohomish & Kittitas Counties.  Darren is now mentoring the next generation of expert service providers within Lilly’s Septic Service.

Lilly’s Septic Service, provides quality environmentally conscious expert Septic Tank Pumping, Septic System Real Estate Sale Inspections, Septic Repair services to residential and commercial clients in King & Pierce Counties.

We proudly provide the best customer service in the industry! For more than 25 years, Lilly’s Septic Tank Pumping Services has provided its clients with quality, expert & thorough Septic System services. Based in King County, Lilly’s Septic Services handles both residential and commercial jobs ranging from Septic Tank cleaning and pumping, Locating and Digging Septic Tank lids, Real Estate Sale Septic Inspections, emergency Septic System minor repairs, Pump alarm calls and Septic Pump Replacements.

As an environmentally conscious company, Lilly’s Septic System Service guarantees satisfaction. Our company is a member of the National Onsite Wastewater Recycling Association (NOWRA) and the Washington Onsite Sewage Association (WOSSA).

Thank you for stopping by our website! I’m sure you will find an abundance of helpful information and resources here for you Septic System Needs. If you have questions and/or would like to book an appointment for Septic Services give us a call or send an email.

Our company mission is to provide the very best expert thorough service for our customers possible.  Through our expert services & years of knowledge, we listen to you and help answer to all of your Septic questions. We are here to help solve all of your Septic System concerns.  Lilly’s is a small family owned & operated service who considers each customer as part of our family.  We operate under strong christian beliefs & operate our company with a customer first attitude with humanitarian ethics.

Our crew & Office staff are here to serve in high integrity and love what they do.

Welcome to the official website of Lilly’s Septic Service, the industry leader in septic tank solutions. With our roots dating back to 1978 in Maple Valley, King County, WA, we boast an impressive 45+ years of hands-on experience in the field of septic tanks and systems. Over the years, our unwavering commitment to excellence has propelled us to refine and enhance our professional practices continually. Rest assured, when you choose Lilly’s Septic Service, you’re selecting a team that leverages the most efficient and environmentally friendly methods to ensure your septic tank remains healthy and trouble-free.

At Lilly’s Septic Service, we pride ourselves on delivering professionalism, efficiency, and unparalleled quality in every job we undertake. Our esteemed owner, Darren McCullough, is a true industry expert, holding certifications as a Certified Master Installer, Certified King County Operations & Maintenance Professional, Certified Septic System Pumping Professional, and Certified Real Estate Sale Inspection Professional. With his wealth of knowledge and expertise, Darren is a well-qualified individual who possesses a deep understanding of the intricacies of septic tank operation. As a testament to our unwavering commitment to excellence,

Lilly’s Septic Service proudly maintains membership in the National Onsite Wastewater Recycling Association (NOWRA) and the Washington Onsite Sewage Association (WOSSA). By prioritizing our clients’ satisfaction and the preservation of our environment, we go above and beyond to inspect your septic tank meticulously, ensuring we provide you with the best possible solutions to maintain its optimal condition. Conveniently located at 26207 Maple Valley Black Diamond Rd, Maple Valley, WA, 98038, we are easily accessible for all your septic tank needs. We understand the importance of convenience when it comes to service hours.

That’s why we operate during the following business hours to cater to your needs:
-Monday: 9:00 a.m. – 4:00 p.m.
-Tuesday: 9:00 a.m. – 4:00 p.m.
-Wednesday: 9:00 a.m. – 4:00 p.m.
-Thursday: 9:00 a.m. – 4:00 p.m.
-Friday: 9:00 a.m. – 4:00 p.m.
-Saturday: Closed. -Sunday: Closed.

For any questions, concerns, or inquiries, please don’t hesitate to reach out to us at (425) 432-3084. Alternatively, you can also contact us via email at Info@LillySeptic.com.