Septic Tank Locating & Digging in Maple Valley, WA

Lilly’s Septic Tank Service experts can locate and uncover your septic tank lids if you are unable. However, we do strongly encourage our customers to locate and dig their own septic tank lid whenever possible, which will save you money and allow us to get the job done quicker.  The following pictures and drawings will help you determine how your septic tank lids is configured. The septic tank is generally located approximately 5 feet off the house, in line with the lowest bathroom or kitchen. We encourage our customers to self-assist throughout this stage of the process. This helps the customer become familiar with their sewage line location for future reference. Do not hesitate to call if you have questions, as we are more than happy to assist.

When to Get Septic Tank Pumping, Drainage, or Septic Cleaning Services

Septic tank pumping and septic cleaning should be done every 3 to 5 years on your Maple Valley home or business, depending on household size and usage. Regular septic tank pumping, septic cleaning, and septic tank drainage maintenance can reduce accumulation of the scum layer in your septic tank. The scum layer should never reach more than 24 inches. If the material reaches 24 inches in depth or more, there is a risk that material will flow into the outlet pipe and into the drain field, causing drain field failure. Now is the time to get on board with our septic tank cleaning services here in Maple Valley. Our septic tank cleaning and septic tank drainage options are as one-of-a-kind as the outstanding staff that delivers them to you right here with Lily’s Septic Tank Services.

The following pictures and drawings will help you determine how your septic tank lids are configured. (Do not hesitate to call for assistance, if you have questions) The Septic Tank is generally located approximately 5 ft off the house in line with the lowest bathroom or Kitchen

With 20 Years of experience Locating and Digging Septic Tank lids it is as if Owner
Darren McCullough has X-Ray Vision of the exact lid location!

1975 and earlier (Single Compartment)(This tank will have one main lid and two smaller baffle lids on both ends of the tank as shown in the diagram below)


1975 – 1980 to Present (Two Compartment)(This tank can have 2 main 24″ lids or 2 main lids and 2 small Baffle lids at both ends of tank directly above the inlet and outlet baffle)

You will be looking for 2 lids like these if there are risers on the tank, if the tank is not risered, you will find 2 concrete lids like the picture above ~ Riser lids can be below the surface which will require locating and digging the riser lid as well ~



1990 to Present (Two Compartment with Pump Tank)(installed with a Pressure Distribution System – This tank will have only one main lid in the center of the tank)

Call Lilly’s Septic Tank Service for More Information

Contact Lilly’s Septic Tank Service, your local choice for septic tank drainage, septic tank cleaning and septic pumping, for more information on our septic tank cleaning services in Maple Valley and throughout King County. Our Maple Valley septic tank drainage professionals at Lilly’s Septic Tank Service are happy to serve as your septic system resources and to provide any pertinent information. If you have septic tank questions or you would like to book an appointment for Septic Services in Maple Valley, then please give us a call. Trust the septic experts for your next septic inspection, septic pumping, maintenance, or repair project to make sure everything is done right the first time. Allow our Maple Valley technicians to bring you the quality septic services you need.

Lilly’s Septic Tank Service provides quality, environmentally-conscious, and expert Septic Tank Services to the King's County area of Washington.