We are the septic experts.

Whether it's consulting, design and installation or repair of your existing system, A Wesco Septic is your professional, courteous and affordable solution.


We had an excellent experience with Jesse and William from Awesco Septic for our pumping and system maintenance. They were prompt, professional, and skillful in helping us understand our system and maintain it economically and effectively in the future. Thanks for sending them and for the great service!
Jeffrey Pierce
Jeffrey Pierce
18:26 10 Feb 23
We want to thank Awesco Septic Services for sending Jesse and William so promptly for our septic pumping, maintenance, and repairs. They were professional,...
Jeffrey P.
Jeffrey P.
10:04 10 Feb 23
I needed my septic tank pumped out and called A Westco. They were able to come out the next day to fix my problem. Jeff and Mike did a great job and gave me a lot of information about my tank and drain field. I would have no problem calling A Westco for my septic or drain field repair.
Brad Tremaine
Brad Tremaine
21:24 24 Jan 23
They came out same day, very professional and clean. The guys on site were enjoyable.
Scott D.
Scott D.
14:20 05 Dec 22
I contacted Anne via a google search. The initial phone call went very well. She took the time to listen to me about my concerns. Her knowledge is exceptional. My first meeting in person went very well. I left there feeling very confidant and excited. Anne helped me change my terrible diet and fluids. Highly motivated me and was always available no matter what time it was. The app she has is amazing and very simple to use. Anne has changed my life and i feel so different within myself. Anne you are truly amazing and i thank you so much.
12:38 19 Nov 22
Fist time owning a home with a septic tank and from the first call to completion of service everyone here was helpful, patient and respectful. From looking...
Preston W.
Preston W.
21:20 25 Oct 22
We had our septic tank pumped and the person that came was very knowledgeable and polite. I can definitely recommend this company. They were on time the cost was about average ours was $1091.00it could be more or less depending on your situation. I do highly recommend them . We were lucky to have Josh W. ask for him he's Great
Susan James
Susan James
19:55 14 Oct 22
These guys are SUPER. Got same day service for pump-out and system alarm diagnosis. Joe was great on the phone! Techs Dennis & Josh came out mid day and made quick work of the tanks. Dennis found the issue with sticking floats in the sand trap causing the alarm. They were very informative and took time to answer all my questions. The job cost was reasonable and I'll call them again for future service.
Devin Hamilton
Devin Hamilton
22:00 23 Sep 19


A Wesco Septic is your full service sewage and septic specialist in Snohomish and King County.

Septic Tank Pumping

An average 4 bedroom house with a 1200 to 1500 gallon tank should expect to have the tank pumped every 3 - 5 years of typical use.

Drainfield Vacuum

The distribution system must be equipped with an air vacuum release valve or other device to prevent siphoning.

Buyer & Seller Inspections

Septic tank inspection services in Snohomish and King County including Seattle, Kirkland, and surrounding areas. Contact us before selling or buying property that uses septic.

Septic Enzyme Service

Using Roebic treatments for your septic system will ensure your system has the biological balance of beneficial bacteria which results in a properly functioning system.

Drainfield Install & Repair

Septic drain fields, also called leach fields or leach drains are used to remove contaminants and impurities from the liquid that emerges from the septic tank.

Installation - Pumps, Filters, Baffles

Installing a septic tank filter will help protect your drain field from contamination and possible failure. What type outlet baffle does your tank have; concrete, PVC, terra cotta or plastic?

Electronic Locating

Locating your sewer line is no longer a guessing game! With our electronic locating equipment, we can find even the deepest sewer systems.

In-Line Camera Work

A flexible rod with a high-resolution color video camera on its tip is inserted into the pipe for inspection.

Maintenance & Monitoring

If properly designed, constructed and maintained, your septic system can provide long-term, effective treatment of household wastewater.



A Wesco Septic is your full service sewage and septic specialist in Snohomish and King County.


Customer requests service or repair to be performed.


Customer service confirms the date and time of appointment.


A Wesco service technician performs the requested service.


A Wesco customer service follows up with customer.