Williams Sanitary Service
Company Overview
Serving the community since 1950 as a family-operated company.
Rely on the skilled team at Williams Sanitary Service, Inc. for your septic needs. We have been dedicated to serving Brentwood, CA, and nearby regions for more than 70 years. Our services cover all aspects of septic systems for both residential and commercial clients. Contact Williams Sanitary Service, Inc. for reliable septic assistance. Get in touch with us today!
We are a Brentwood-based company, dedicated to serving the East Bay community.
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

This is a horrible company and they are liars and all they want is MONEY! We have used this company to maintain our septic for years. Now, we are trying to sell our house. All of a sudden, during inspection we ""NEED"" a new tank. But through all these times we used them, NEVER once they mentioned we needed a new tank. I do not recommend this company if you have future plans. I would give negative stars if possible. Their qoutes are absolutely ridiculous. Do your own research and get better service and price elsewhere.

What a great crew! Worked hard, respectful, knowledgeable and while we hit some hiccups (no fault of theirs) they kept me informed and were cost conscious. Highly recommend Alberto and his team.

We were selling our house and the new buyers called out Williams to pump out tank and test system
During the test which require running water down the drainline using a hose. He had a nozzle on the end that made the flow harder and sharper. This guy kept pulling out the hose very sloppily and kept knocking leaves and dirt into the drain. He failed the system. He said it was only 23 min when water started backing up. It should last longer than 30mins replicating a 30 min shower
I got the gpm of a shower head which us .8gpm. 2 days later I did my own test. I used a flow rate of 2.5gpm and I got 77mins with no back up. I used twice the water and lasted over twice as long. The only difference was I only pulled the hose out every 15mins and didn't knock debris in the hole.
The engineer who I used is good friends with Williams. I had problems with engineer. One of the inspections the engineer was going to be. The engineer wouldn't call me back. This was my chance to confront him. Williams knew this and changed the inspection time and didn't notify me.
It cost me $36,000 for engineering and install. This whole industry is flawed
If I didn't keep a close eye on it
It would have cost ,,$60 to $80k
Because of the engineer
If you are putting in a new system, email me and I can share more info. [email protected]

Whether it was septic pumping, septic inspections, or septic installation, (when our old system failed after many years), Darren Williams and now the new owner Alberto Solorio have provided the same quality of service. Our new system is now large enough to provide service to 2 homes on the property. The costs were very reasonable and affordable with an easy time frame of payments as each stage of the job was completed. Alberto's mantra was always ""I want you to be happy"". Not something you hear much from a contractor. If you have questions or are considering using a sanitary service they do not charge you just to come see your property and access your needs. Their services are septic pumping, septic inspections, septic installation, operations & maintenance of septic systems, rooter service, full service plumbing.

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