Certified & insured Woman-owned CA Certified Small Business

Rosie's Backflow Keeping your water supply safe.

Certified backflow testing across Placer and Sacramento counties. Annual certification and minor repairs completed on time with your water district.

Rosie the Riveter. The iconic figure in red polka-dot bandana and blue work shirt, flexed arm raised, on a red-and-yellow poster background.
Backflow testing equipment
Backflow site
Backflow preventer

When water flows the wrong way, it carries what it shouldn't.

Backflow assembly
Backflow equipment

A backflow preventer is an assembly on your property that stops contaminated water (from an irrigation line, a boiler, a fire sprinkler) from reversing into the clean supply you drink from.

Most California water purveyors require an annual test by a certified tester. If you've received a notice from your water district, you're in the right place.

Typical visit
20–30 minutes on site
Turnaround
Report filed with your purveyor within 24 hours
Required by
Most water districts, annually

Based in Loomis.
Working across the region.

Backflow repair work
Backflow site

Hi,
I'm Kasandra,

We started Rosie's Backflow Testing because this is one of those small, necessary jobs that gets done better when the person doing it actually cares about doing it well, and because the trades could use a few more of us.

Rosie is the mascot: a reminder of what women in the trades have always been capable of. Woman-owned, locally operated out of Loomis, and focused on keeping your water clean and your paperwork with the water district in order.

Kasandra

Backflow testing kit

Due for a backflow assembly test?

Backflow testing in progress
Completed backflow certification