AN Irrigation Co Sprinkler Systems · Backflow Testing
Backflow Testing in Calgary, AB That Keeps Your Sprinklers Legal
Every irrigation system in Calgary ties into the same drinking water your house does, and the device that keeps lawn water from flowing back into that supply has to be tested every year. We handle that test at spring start-up for a flat $130, check the device is holding the way it should, and file the report with the City, so you stay compliant without tracking a single deadline.
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AN Irrigation Co Sprinkler Systems tests irrigation backflow devices in Calgary for a flat $130, including filing the passing result with the City inside the 30-day reporting window. Calgary's Water Utility Bylaw requires the annual test when your system starts up for the season, so we run it during spring start-up in one visit.
- Backflow Testing: $130
- Service area: Calgary, Airdrie, Cochrane, Okotoks, and Chestermere
- Estimates: free, written, and itemized before any work starts
Upfront, written pricing. Your exact number is confirmed on a free on-site assessment before any work starts.
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The Short Version
AN Irrigation Co Sprinkler Systems provides backflow testing in Calgary, AB.
AN Irrigation Co Sprinkler Systems serves Airdrie, Calgary, Chestermere, Cochrane, Okotoks and the surrounding Calgary area.
AN Irrigation Co Sprinkler Systems is registered in Alberta as a partnership of Andre Dostic and Nashton Fromm-Robinson.
AN Irrigation Co Sprinkler Systems backs its work with a 1-2 year warranty on all parts and labour.
AN Irrigation Co Sprinkler Systems is a fully insured irrigation contractor.
From Our Job Sites
Real work, our own photos
An in-ground irrigation valve box with solenoids and wiring during an AN Irrigation repair
See more in the full photo gallery.
“Backflow prevention devices are a critical component of every irrigation system and should be regularly tested and maintained to ensure proper operation and compliance with local requirements.”
AN Irrigation Co Sprinkler Systems
The Difference
Why homeowners choose AN Irrigation Co Sprinkler Systems for backflow testing
More about how we work
Source Trail
Records and local rules behind the work
These are the real organizations and public rules behind our work, and they are the only ones we name. If we cannot show you the paperwork for something stronger, such as a manufacturer program or an extra trade credential, we do not put it on this page.
Alberta business record
AN Irrigation Co Sprinkler Systems is a business registered in Alberta, and that registration is what the name on your invoice traces back to. A business registration is not a trade licence, and we do not present it as one.
Alberta registry lookup →WCB-Alberta clearance
We keep worker-coverage documentation current and can produce it for a job or a vendor that asks. It is what stands behind saying our crew is covered, and we do not stretch it into a badge it is not.
WCB-Alberta →Liability documentation
Liability-insurance documentation is available to you before work begins. That is exactly what being fully insured means everywhere it appears on this site.
Zensurance
Calgary water rules
Our backflow pages point at the City of Calgary's own public cross-connection rules so you can read them yourself. We do not claim a tester or manufacturer credential we cannot put paperwork behind.
City of Calgary Cross Connection Control →
Trusted for backflow testing across the Calgary area
Real project photos from our own crews: finished lawns, running zones, and a written price you approve before any work starts.
Rotor heads throwing long arcs across an open lawn below a treed slope
Why Calgary requires an annual backflow test
Every lawn sprinkler system in Calgary connects to the same municipal line that feeds your kitchen tap, and that connection is where the risk lives. Water is supposed to flow one direction, from the city main out to your heads. When pressure in the main drops, during a water-main break, a hydrant flow, or heavy demand nearby, the flow can reverse and pull water backward out of your irrigation lines toward the drinking supply.
A backflow prevention device sits at that junction to stop the reverse flow. Calgary's Water Utility Bylaw requires the device on every irrigation system to be tested each year, at the time the system is turned on for the season.
More about backflow testing
The rule is part of the city's cross-connection control program, and it applies whether your system is a single-zone front lawn or a twelve-zone property. The test has to be done when the system comes online in spring, and the result submitted to Calgary Water Services within thirty days.
Skip it and the consequences run from fines to a water-service interruption, with the property owner on the hook for any damage a failed device allows.
Skip it and the consequences run from fines to a water-service interruption, with the property owner on the hook for any damage a failed device allows. Pairing the test with your spring start-up is the simplest way to keep the date from slipping, since the bylaw ties the two together anyway.
What cross-connection protection actually guards against
Cross-connection is the plumbing term for any point where drinking water can meet something you would never want to drink. On an irrigation system, the water sitting in the lines and around the heads is in contact with soil, lawn fertilizer, pet waste, and standing groundwater.
Under normal pressure none of that moves toward the house. Under back-siphonage, when the main loses pressure, or back-pressure, when something downstream pushes harder than the supply, that contaminated water can travel the wrong way into the pipe your family drinks from.
The backflow device is the mechanical stop that prevents it. Most residential irrigation systems use a pressure vacuum breaker or a double check valve assembly, mounted above ground just past the shutoff.
A device installed too low, or one whose internal check has worn out, gives the appearance of protection while doing none.
A pressure vacuum breaker has to sit at least a foot above the highest sprinkler head it protects, because it relies on that elevation and an air inlet to break any suction before it can pull water back. A device installed too low, or one whose internal check has worn out, gives the appearance of protection while doing none. The yearly test is what tells the difference between a device that works and one that only looks like it does.
What a backflow test involves
A backflow test is a short, methodical check of the device's internal parts. We attach a calibrated differential pressure gauge to the test cocks built into the assembly, isolate the device, and read whether each check valve holds a tight seal under pressure.
On a pressure vacuum breaker we also confirm the air inlet opens at the pressure it is supposed to, since that inlet is what breaks a siphon. The numbers off the gauge either meet the passing threshold or they do not, so the result is a measurement rather than a judgment call.
When a device fails, it is almost always a worn check spring, a fouled seat, or freeze damage from a winter the assembly was not fully drained. Those are rebuildable. We carry the common repair kits, rebuild or replace the device where we can, and retest until it passes before anything gets filed.
Only a passing result goes to the City, and you get a copy for your own records.
A device that sat through an Alberta winter with water trapped inside is the usual spring casualty, one more reason the fall blowout and the spring test belong on the same calendar. Only a passing result goes to the City, and you get a copy for your own records.
Staying compliant without tracking it yourself
The paperwork is the part homeowners forget, and the City counts it as strictly as the test itself. A passing test still has to reach Calgary Water Services within thirty days to keep your address in good standing, and a test that never gets filed reads the same as a test that never happened. We submit the result for you inside the window and keep the confirmation, so a compliance rule turns into something you never have to think about.
If you have just bought a home with an existing system, there is a good chance you have no record of whether the backflow was ever tested, and a City notice is a poor way to find out. A first test tells you the device is sound and puts your address on record. From there it becomes a yearly line item folded into your spring start-up: the system comes online, the backflow gets tested and filed, and your sprinklers stay legal and your water stays protected without a deadline for you to track.
Side by Side
The two devices on most Calgary systems
| Pressure vacuum breaker (PVB) | Double check valve assembly (DCVA) | |
|---|---|---|
| Where it sits | Above ground, at least a foot above the highest head it protects | Above ground, just past the shutoff |
| How it protects | An air inlet breaks a siphon before water can pull back | Two check valves seal against reverse flow |
| The annual test | Checks and the air inlet both verified with a gauge | Each check verified to hold under pressure |
| Common failure | Freeze damage when left undrained over winter | A worn check spring or fouled seat |
Watch For These
Signs you need backflow testing
- A notice from the City reminding you your annual backflow test is due
- An irrigation system being turned on for a new season
- A device that was never tested after last year's start-up
- A backflow assembly that sat through winter and may have frozen
- A new home where you have no record the sprinkler system was ever tested
Seeing one of these? Call (587) 600-6451 or request a free estimate.
Our Process
The AN Irrigation Co Sprinkler Systems backflow testing process
- Step : 01
Locate and check the device
We find your backflow assembly, confirm it is the right type for your system, and make sure it sits at the height and orientation the code requires before testing.
- Step : 02
Run the test
Using a calibrated gauge on the device's test cocks, we verify each check valve holds under pressure and the air inlet opens when it should, exactly as the annual test requires.
- Step : 03
Repair or rebuild if it fails
If a check valve leaks by or a poppet cracked over winter, we rebuild or replace the device and retest, so you leave with a device that actually passes.
- Step : 04
File the result
We submit the passing test to the City within the reporting window and hand you a copy, so your system is on record for the year.
Real Google Reviews
What Calgary-area homeowners say about our work
5.0 rating on Google. Every review here is a real customer’s own words, copied exactly as they wrote it.
The guys were out at our home today in Cochrane, they were thorough and fairly priced. The boys diagnosed my shorted station, fixed 2 leaks and adjusted placements of heads for better coverage.
I contacted Andre for a service check and wiring clean up, him and his business partner Came to my home in Okotoks as planned, we walked the system, they fixed all issues and I was a happy camper...
...Got them to set up an app based system for my dad to manage his irrigation in his yard and he's been raving to me nonstop about how much he loves it!
Best pricing I found in the city... they even made my system more efficient so it uses less water but still has great coverage.
Good to Know
Backflow testing: frequently asked questions
How much does backflow testing cost?
A flat $130 for the annual test on a residential irrigation system, including submitting the result to the City. If the device fails and needs a rebuild or replacement, we quote that repair separately and upfront before doing it.
Do I really have to test my backflow every year?
Yes. Calgary's Water Utility Bylaw requires the backflow device on an irrigation system to be tested annually, when the system is turned on at the start of the season. It is a cross-connection rule that applies to every irrigation system tied to the city supply.
What does the test actually check?
A backflow device holds city water from siphoning or being pushed back out of your sprinkler lines. The test puts a calibrated gauge on the device, confirms each internal check valve seals under pressure, and confirms the air inlet opens. A device that passes is doing its one job. A device that fails gets rebuilt and retested.
Can you test it during my spring start-up?
Yes, and that is the ideal time. The bylaw ties the annual test to system start-up, so pairing the two means the backflow gets tested the same visit your system comes online, with one booking instead of two.
What if my device failed over the winter?
It happens. A backflow assembly is one of the most freeze-vulnerable parts of a system, and a cracked check or a split poppet shows up at the spring test. We rebuild or replace the device on the spot where we can, retest it, and only file a passing result.
Do you cover Rocky View County and Foothills County for backflow testing?
We cover Calgary and all four quadrants of the city, plus Airdrie to the north, Cochrane to the northwest, Chestermere to the east, and Okotoks to the south. The acreage belts of Rocky View County and Foothills County sit between and around those, and we take backflow testing calls out there too. If you can water a lawn there, we can look after the system doing it.
Where We Work
Backflow testing across the Calgary area
Calgary's cross-connection rules cover every irrigation system in the city, and the neighbouring towns follow their own water bylaws. Book backflow testing in Calgary, or see the local pages for Airdrie, Cochrane, Okotoks, and Chestermere for how each town handles irrigation and water rules.
More about where we take backflow testing calls
Getting To You
Where we take backflow testing calls
- Calgary, AB, all four quadrants, worked out of our own Calgary base
- Airdrie, AB, north, a straight run up the QE2
- Cochrane, AB, northwest in the Bow Valley, where Highway 1A meets Highway 22
- Chestermere, AB, east against the city limits, along the Trans-Canada
- Okotoks, AB, south past the city edge on Highway 2A, along the Sheep River
Between and around those sit the acreage belts of Rocky View County and Foothills County, and we take those calls too. Distance matters less than you would think: a crew already running a route through the north end is in Airdrie in minutes, and a job in Okotoks books the same way one in southeast Calgary does. Tell us where you are and we will tell you when we can be there.