Cross-connection inspections look for places where the drinking water system touches equipment or lines that could contaminate it. We note each connection, whether it's protected, and what kind of device it needs if it isn't.
- PriceFree quote
- ReportWritten list
- Best forCommercial sites
- Follow-upInstall if needed
Pricing
| Backflow size | Flat fee per backflow |
|---|---|
| Under 4" | $105 |
| 4" and larger | $175 |
Includes the test and filing with your water district. No hidden fees.
Want to get on the schedule? Call or book online.
What we look for
- Medical and dental equipment
- Boilers, chillers and cooling towers
- Irrigation and fertilizer injection systems
- Hose connections and utility sinks
- Commercial kitchens and dish machines
What a cross-connection is
Any place drinking water could mix with something harmful is a cross-connection. Examples include a hose left in a chemical tank, sprinklers with fertilizer injection, boiler water with treatment additives, and medical or dental equipment lines.
Water is supposed to flow in one direction, from the main to you. A sudden drop in street pressure, from a main break or heavy hydrant use, can pull water backward. That's backsiphonage. A pump, boiler or elevated tank on your side can push water backward. That's backpressure.
Both can carry contaminants into the public supply. A properly chosen device at each cross-connection keeps that from happening.
How the inspection works
We start at the meter and follow the water through the property. Along the way we check irrigation, mechanical and boiler rooms, kitchens, labs, wash bays, hose connections and any equipment tied to the water lines.
Each connection gets noted: what it serves, how risky it is and whether it's protected. Existing devices are checked to see if they match the hazard. Unprotected connections get a recommendation.
You get a written summary afterward. Since water districts set their own rules for formal surveys, and some require a cross-connection control specialist, let us know what your district asked for and we'll make sure the work matches.
Properties that commonly get surveyed
Districts usually focus on businesses and larger properties: restaurants, clinics, dental offices, car washes, factories, schools, hotels and apartment buildings.
A change in how a space is used is a common trigger. When a shop becomes a restaurant or an office becomes a medical suite, the risk changes and the district may ask for a fresh look.
Owners also request inspections on their own before buying, remodeling or going through an audit. If you received a letter from your district, it should spell out what's required and the deadline. Forward it to us and we'll handle the rest.
Choosing the right device for each connection
Protection depends on the hazard. An air gap, an open space between the outlet and what it fills, is the strongest option. For high hazards where an air gap won't work, an RP assembly is the standard.
Lower hazards may be fine with a double check. Connections only at risk of backsiphonage, such as many irrigation systems, can sometimes use a PVB or SVB if the layout fits.
The district decides what's acceptable for each situation. After the inspection, we can quote the needed devices, install them, test them and file the first reports, all in one plan.
Common hazards by business type
Hazards tend to follow the type of business. Restaurants have beverage systems, dish machines and chemical dispensers on hoses. Clinics and dental offices have equipment and sterilizer lines. Car washes inject chemicals. Factories have process water, cooling systems and storage tanks.
We know where to look first, but every connection gets checked, because one-off setups show up all the time.
Finishing the job
If the inspection leads to new backflow devices, each one needs a startup test once it's installed. Those reports tell your district the connections are now protected.
From then on, every new device joins your yearly testing schedule. If you'd like, we'll track the due dates for all of them so nothing slips.
Pricing a cross-connection inspection
Pricing depends on the size of the property and how many water connections it has. A small storefront is a quick walk-through, while a multi-building campus takes much longer.
Call with the address, the type of business and any letter from your district. We'll give you a free quote before scheduling.
If something isn't protected
We'll show you what needs protection and quote the installation.
Questions
How long does a cross-connection inspection take?
A small commercial space may take an hour. Larger sites with several buildings take longer, and we'll estimate when you call.
Who needs a cross-connection inspection?
Usually commercial, industrial, medical and multi-unit properties, or any site your water district asks to be surveyed.
What happens with what you find?
You get a list of each connection and what it needs. You decide what to fix and when.
Does my district require this?
Some do for commercial and multi-unit sites, especially after a change of use. Check your letter or ask us.
Is this the same as a backflow test?
No. A test checks a device that's already installed. A cross-connection inspection checks whether you have the devices you need.
Do homes ever need one?
Rarely, but it can come up with wells, pools or home businesses. Call if your district asked.
How we handle cross-connection inspection in Corona
Our approach is simple. Show up when we say we will, do the work right, and handle the paperwork so you don't have to. Every tester is certified, every gauge is kept in calibration, and filing with your water district is included.
Pricing is clear. Tests are a flat $105 for devices under 4 inches and $175 for 4 inches and larger, and anything beyond the test is quoted before we start. We're available seven days a week from 6am to 12pm, with emergency calls answered 24/7. Most Corona appointments are within the same week, and you'll have a copy of your report by email when we're done.
Cross-Connection Inspection near Corona
We offer cross-Connection Inspection throughout Corona and nearby cities, including Norco, Eastvale, Home Gardens, Weisel and Arlington. Most appointments are available within the week, and you can call or book online.