Williams Sanitary Service
Company Overview
Established in 1950 as a family business.
Let the professionals at Williams Sanitary Service, Inc. handle your septic work. For over 70 years, we have been committed to the Brentwood, CA community and its neighboring areas. From septic tank pumping to new installations, we cater to both residential and commercial needs. Make us your first choice for all septic services. Get in touch with us today!
As a local company, we proudly serve Brentwood and the surrounding East Bay.
Our approach is to treat clients as we would like to be treated.
Business Services
- Faucet installation
- Garbage disposal repair
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
- Sewer installation
- Sewer repair
- Toilet installation
- Water heater installation
- Water heater repair
- Water pipe installation
- Water pipe repair
Business Location & Hours
Mon: | 8:00 AM - 4:00 PM |
Tue: | 6:15 AM - 6:30 AM |
Wed: | 8:00 AM - 4:00 PM |
Thu: | 8:00 AM - 4:00 PM |
Fri: | 8:00 AM - 4:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

Prompt, courteous, knowledgeable, reasonable prices. Can't beat that! Will definitely call them again!

I don't know where to start!! From the call I made to the them in emergency! I didn't know about septic tank stuff! But they came out and had a great attitude and showed me thinks to make sure I don't have issues later! All I can say is thank you for your time and your amazing staff! Amazing process with a smile!! Once again thank you guys!!

Third generation family business that has tremendous knowledge and professionalism. They know what there doing and will get your problem taken care of when they say for what they quote. They are simple the best.

They didn't do what they said they would do. They said they could do some repairs when they got here late they said they didn't do repairs. Would not recommend them ever.

We hired Williams Sanitary Service to come out to our newly purchased property to help us figure out exactly was going on with the septic system there. From Amanda in the office to Kevin & Alberto in the field, every part of the process was handled effectively and efficiently. We had a unique situation and Kevin and Alberto were beyond knowledgeable, professional and really took the time to make sure we understood everything that was going on. They were like a super septic duo! I can't rave enough about this company and they will absolutely be the only service I recommend to anyone looking for help with septic!

Great company showed up here on Christmas Day to help me with my septic tank could not ask for a better company or proper service I highly recommend them for any service needs Jim B Knightsen California

We've lived in our home on septic for 9yrs, the previous owners told us they could never find the septic tank after numerous attempts. We had tried to have the tank pumped out but no one at the county could tell us where it was. After talking with the staff at Williams they laid out a plan and sent out a great team to help locate our septic tank. In 7 minutes they were able to find a tank that had been hidden for 12+ yrs!
They quickly dig up both boxes, tested the lines, pumped it out, inspected the boxes and covered the holes like they had never even been there. Something that was haunting us for for years was fixed in a matter of hours! EVERYONE from the office staff to the guys in the field were so friendly and so professional!! I cannot say enough good things about the whole team! Thank you Williams Sanitation

Not sure why they're rated high?! We'd nothing but issues scheduling the INITIAL meeting! First they told us they're one hour away & WE have to make sure our job is right for them!! They finally agreed on a date to visit the job site and when WE called to confirm, they did not have a record of the visit!? We decided to take the business to another ""reliable contractor""!

Terrible. Came and pumped my tank then called the city and had an inspector come out saying i didnt have permits for another company to replace my tank. They just wanted the buisness for themselves! Too bad for them because the other company didnt replace my tank they just fixed it. YOU DONT NEED A PERMIT FOR THAT! Nice try. I Wont be useing them again.

I have been having trouble with our septic system. I called Darren from Williams Sanitary Service. He came out and fixed the problem! He is very professional and responds quickly. He knows his business. My wife and I are very pleased with this company.