Roy Coto Plumbing
Company Overview
Backflow assessment. Every model available.
Backflow testing expert with AWWA certification.
Authorized in both San Francisco and San Mateo counties. Same-day service available.
Having spent 25 years as a plumber, I established my own backflow testing service. Though I am a licensed plumbing contractor, I now concentrate on backflow testing and repairs for systems 2 inches and under. My primary service area is San Francisco, with additional coverage in 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. I married in 1987 and settled in Pacifica. I spend my leisure time diving, kayaking, foraging for mushrooms, and volunteering 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!!