The type of backflow preventer you need depends on what's on your side of the meter. High-hazard uses like medical offices or chemical irrigation need an RP. Lower-hazard lines can use a double check. Irrigation often uses a PVB or SVB. Your district has the final say, and we confirm it before we quote.
- PriceFree quote
- TimeUsually 1 day
- TestIncluded
- FilingIncluded
Want to get on the schedule? Call or book online.
How we choose
- Pipe size and water demand
- Where it can be installed and tested
- What the water is used for
- Your district's requirements
Matching the device to the risk
The type of backflow preventer you need depends on what could get into the water if it flowed backward. Districts group connections into hazard levels, and each level allows certain devices.
High-hazard uses, like medical and dental offices, car washes, chemical feeds and many commercial kitchens, generally need an RP assembly or an air gap. Lower-hazard connections, such as many fire sprinkler systems, can often use a double check. Irrigation systems that only face backsiphonage may use a pressure vacuum breaker or spill-resistant vacuum breaker.
Your water district has the final word. Before we quote, we confirm what the district requires for your connection so you don't pay for the wrong device.
Sizing the device
The device needs to handle your water flow without cutting pressure too much. Every preventer has some pressure loss, and a too-small one can mean weak showers upstairs or poor sprinkler coverage.
We check the pipe size, how much water you use at peak times, and the pressure at the meter. Most homes land on 3/4-inch or 1-inch devices. Commercial and fire services usually start at 2 inches.
Oversizing has its own downsides: more cost, more space and sometimes more trouble passing tests. We pick the size that fits your actual demand.
Paperwork before the install
Many water districts want to know about a new backflow device before it goes in. Some require plans for commercial installs, some only need the first test report afterward. Cities may require a plumbing permit, especially on commercial jobs or when the device is going on a fire line.
We'll tell you what's likely needed for your project and include it in the plan. If a permit is required, the timeline accounts for it.
After installation, the device is tested and the first report is filed. That puts it on the district's list and starts its annual testing schedule.
When people need a new device
New buildings are the most common reason. Commercial projects and homes with new irrigation usually need protection before the water service is signed off.
Adding equipment is another. Installing sprinklers, a pool, a boiler or a fire sprinkler line often brings a new requirement. Changing how a space is used, like store to restaurant, can too.
Other times a district review finds an unprotected connection. In every case, we confirm the right type, size it, install it and file the first test report.
Preventers for sprinkler systems
New sprinkler systems and big landscape renovations are among the most common reasons for a new preventer. Depending on the district and the system, irrigation may use a PVB, an SVB, a double check or, with fertilizer injection, an RP.
We'll look at the yard's slope, where the valves are and whether any chemical feed is planned, then recommend the device and location that fits.
Commercial and fire line installs
Commercial projects usually mean bigger devices plus plans, permits and coordination with other trades. Fire services typically use detector assemblies of 4 inches or more.
We coordinate with your contractor so the device goes in at the right stage and the startup test is complete ahead of final inspection.
Understanding your installation quote
Every installation quote lists the device type and size, the labor, any fittings or piping changes, and protection like a cage or cover if you want one. It also includes the startup test and filing the first report with your water district.
If permits are needed, we'll say so and include them or explain how they're handled. There's no charge for the quote, and you'll know the total before we schedule the work.
Already have a device that seems like the wrong type? We can review it against your district's requirements and tell you whether it needs to be replaced or can stay.
Need help deciding?
Start with our device comparison or give us a call.
Questions
Do you pull permits?
When a permit is required, we let you know and include it in the plan.
Will my district need to approve it?
Many do. We check the requirements and handle the paperwork with you.
Is installation priced up front?
Yes. You get a free quote after we look at the site.
Can the wrong size cause problems?
Yes. Too small can drop pressure, and too big can cost more and be harder to keep passing.
Can I install a PVB instead of an RP to save money?
Only if your district allows it for your hazard. For high-hazard uses, an RP is usually required.
Will the district add the new device to its records?
Yes. Filing the first test report puts it on their list and sets the first annual due date.
Working with a local backflow company
When you call us about backflow preventer installation, you're talking to a company that focuses on backflow prevention. That focus means we know the devices, the test procedures and what your water district expects to see on the report.
Here's what you can count on: certified testers, calibrated gauges, a price before any work, and filing with your district included. Testing is $105 flat per device under 4 inches and $175 for 4 inches and up. We pick up seven days a week from 6am to 12pm, book most visits within the week and take emergency calls 24/7. Every customer gets a copy of the report for their records.
Backflow Preventer Installation in Fontana and nearby
Need backflow Preventer Installation outside Fontana? We also cover Rialto, Rancho Cucamonga, Colton, San Bernardino and Ontario. Same-week visits are normal, and booking takes a couple of minutes.