Best Backflow Testing in San Francisco CA

Grateful to find once source plumbing. Very professional, on time, accurately priced. Highly recommend.

Very Professional, Knowledgable, courteous. Good value

Carlos helped us get our kitchen drain unclogged and back to working, and also recommended a degreaser product to keep the sink working. Thanks so much!!!

Very impressive service. Professional and efficient. Estimate was accurate and no surprises. Highly recommend.

These guys were great. I called them out initially do to a test only for the Oakland sewer lateral compliance program. My line failed miserably and I ended up hiring them to replace my sewer line instead. They only charged me for the replacement! They were quick efficient and clean. I would do business with them again

Great service, friendly plumber! super clean! Next time I'll call him again

One Source Plumbing & Rooter completed a very complex plumbing job for me in San Francisco. I met One Source at a critical time when my rental property need the main sewer line replaced. At the time, and the sewer had a mysterious foul order coming from an unknown source and it was not because of a backup.
One Source diagnosed and proposed a solution to the plumbing issues. They replaced the main sewer line and all adjacent old clay pipes which required requesting San Francisco City permits on short notice. This was a very complex job with many moving parts and One Source Plumbing managed the complexities of the plumbing job flawlessly.
Mosfa's communication skills are outstanding and he remains calm under pressure and offers timely solutions. For example, he sends daily updates with pictures so you are well informed on the progress of the job.
I would recommend One Source Plumbing without any hesitation whatsoever for small to very complex plumbing jobs.

The team was responsive and arrived quickly. We had an issue that other plumbers had no clue how to fix and had passed on and the technicians were able to resolve the issue within an hour! They were in general friendly and professional as well. They also saved us a ton of money not having to replace our very specific pump type.

It’s always nerve-racking when you’re trying to find a plumber or other type of home repair company. J Drains came referred from a coworker who had used them recently extremely nice and straightforward. They were one of the few companies were willing to give a quote over the phone or they came quickly and offered many options for repairs and allow me to choose the one. I thought that was best. Definitely recommend them if you need any type of plumbing work.

The job is amazing,

I just posted a photo of the new toilet Ace installed. Our house has had Ace out numerous times to resolve various issues relating to our building's age (1880's) and the shoddy DIY work of previous owners. These guys have always been nice. Upfront, accurate estimates before work begins. In this particular bathroom Ace advised us we could either keep fighting the issue or simply replace the toilet. They let me select, from the variety at the big box hardware store, for whichever toilet would meet my needs (and fit). Dude! I so wish we'd done this long ago. It looks so sweet and the flush so reliable without threatening to overflow.

Alansi plumbing is no longer at this location. I am not sure of the new address