Carlsbad based. Water district listed.
Certified Backflow Testing in North County San Diego
We test, repair, and install backflow preventers for homes, HOAs, and businesses. Your results are filed electronically with the water district, so you never chase paperwork.
- Licensed, certified, and insured (CA License #1117220)
- Backflow testing from $80, certification and district filing included
- Fast scheduling, with same day service available
Trusted by homeowners, HOAs, and property managers across North County.
Free estimate
Get Your Free Estimate Today
Tell us what you need and we will get back to you fast with a clear price. Got a test notice from your water district? Have it handy, it tells us everything we need.
- Fast response during business hours
- Upfront pricing, no surprises on the invoice
- Certified testers on every job
Prefer to talk it through?
REVIEWS
Trusted by Homeowners, HOAs and Property Managers Across North County
Real reviews from real customers on Google. We keep them coming the old fashioned way: show up on time, work clean, and only recommend what you actually need.
Water district compliance
Got a backflow test notice from your water district?
That letter has a deadline, and missing it can mean fines or a water shutoff. We make it painless, so you can sleep easy knowing your water is safe and up to code.
Beat the deadline
Same day and expedited testing available when the district clock is ticking.
About us
Meet the Local Team Behind Mr. Backflow
Mr. Backflow is a family owned and operated company based in Carlsbad. Backflow is not a side service for us, it is all we do, which is why property managers and HOAs across North County keep us on speed dial.
We show up on time, work clean, and recommend only what you actually need. If a $450 repair will do the job, nobody here will sell you a $2,500 replacement
Complete Backflow Services for Homes, Businesses & HOAs in North County
We provide full-service backflow solutions—testing, repairs, replacements, and new installations—handled by certified experts. Whether you need an annual inspection or an urgent repair, we’ve got you covered.