Lilly's Septic System Services

If you are looking for first-class service, you have come to the right place! We aim to be friendly and approachable. We are here to serve you and answer any questions you may have. Call us today: 425.432.3084 * 253.639.3606 * 360.825.4809

We put our customers first. We listen to you and help you find answers to all of your Septic questions. Give us a call, we are here to help solve all of your S

eptic System concerns. We are the only Septic Company in the Northwest who can perform ALL Septic services needed. We are licensed as a Professional Septic Tank Pumping Firm, certified Sale Inspection Firm, Certified Master Installer for all of your repairs and septic Installations, Maintenance Professional and have an in-house Professional Engineer Septic Designer. Our Staff is knowledgeable in all aspects of your Septic System. We have been proudly serving homeowners in the Northwest since 1978. We are family owned and operated and consider each and every customer as part of the Lilly's Family! You can count on Lilly’s Septic Tank Pumping and Inspections for:

* Septic Tank Pumping and Cleaning
* King County OSS – O & M Real Estate Sale Inspections
* Septic Tank Lid Locating and Digging Service
* Septic System Installation
* King County OSS – O & M Real Estate Sale Inspections
* Septic System Maintenance & O&M Contracts
* Septic System Troubleshooting & Repairs
* Septic System Repairs
* Septic System & DrainField Repairs & Upgrades
* Septic Pump Alarm Troubleshooting
* Septic Pump Replacements


Lilly’s Septic Service, provides quality environmentally conscious expert Septic Tank Pumping & Septic System Installation services to residential and commercial clients in King & Pierce Counties. We proudly provide the best customer service in the industry! Since 1978, Lilly’s Septic Services has provided its clients with quality, expert and thorough service. Based in King County, Lilly’s Septic handles both residential and commercial jobs ranging from Septic Tank Pumping and Cleaning, Septic System Inspections, Locating and Digging Septic Tank lids, Emergency Repairs, Septic Pump Alarm Calls, Pump Replacements, Septic and Drainfield Troubleshooting and specialize in New Septic System Installations and Upgrades. As an environmentally conscious company, Lilly’s Septic Service guarantees satisfaction. Our company is a member of the National Onsite Wastewater Recycling Association (NOWRA) and the Washington Onsite Sewage Association (WOSSA). Darren McCullough, Owner and Operator is a Certified Septic System Professional and a Certified Master Installer in King, Pierce, Snohomish & Kittitas Counties. 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