Roy Coto Plumbing
Company Overview
Backflow testing services. Every model available.
“AWWA certified” backflow inspector.
Licensed and certified in San Francisco and San Mateo counties. Most times, we offer same-day service.
After 25 years in plumbing, I started my own backflow testing company. As a licensed plumbing contractor, I have transitioned to specializing in backflow testing and repairs for systems 2 inches or less. I mainly serve San Francisco, but I also extend my services to San Mateo County.
I grew up in Florida and relocated to San Francisco in 1970. I served three years in the Army during the mid-seventies. In 1987, I got married and moved to Pacifica. During my downtime, I like to dive, kayak, hunt for mushrooms, and volunteer at The Marine Mammal Center.
Business Services
- Plumbing inspection
- Plumbing installation or replacement
- Plumbing repair
Business Location & Hours
Mon: | 8:00 AM - 5:00 PM |
Tue: | 8:00 AM - 5:00 PM |
Wed: | 8:00 AM - 5:00 PM |
Thu: | 8:00 AM - 5:00 PM |
Fri: | 8:00 AM - 5:00 PM |
Sat: | Closed |
Sun: | Closed |
Recommended Customer Reviews

Roy has done our backflow testing for years. Always helpful, fast and reliable.

We have been using Roy of RC Plumbing certifying all our property in our property management accounts. Dennis Etorma Property Manager Saxe Real Estate

Roy is fast, efficient & friendly. He even explained & showed me why a backflow certification is required. And, he is upfront in his estimate which never wavered. I will rely on Roy again, next year.

I can not believe I am the first review. Roy has worked on our place for at least 9 years and he is GREAT!! Reliable, reasonable, professional, easy to talk to. Strongly recommended!!