Property size
Larger buildings with more fixtures and connections take longer to survey.
Cross-Connection Control
Cross-Connection Control Surveys
A systematic survey of your plumbing system to find and eliminate cross-connections — the points where contaminated water could enter your clean supply.
What is a cross-connection control survey?
A cross-connection control survey is a systematic evaluation that identifies points in a water system where clean and non-potable water could mix if backflow occurs. Trained specialists inspect your property and plumbing to spot these risks and recommend safeguards — typically backflow prevention device installation — to eliminate them.
- Identifies hidden cross-connection hazards
- Recommends the right backflow protection for each risk
- Supports compliance with cross-connection control programs
- Protects the public drinking water supply from contamination
Cross-Connection Control
Find the risks before they become problems
Cross-connections are easy to miss and costly to ignore. Our certified specialists evaluate your entire system, document every potential hazard, and give you a clear plan to address them.
Full-system review
We inspect your property and plumbing for every potential cross-connection.
Risk assessment
Each hazard is rated so you know what needs protection first.
Clear recommendations
A documented plan for the right backflow device at each point.
Compliance support
We help you meet cross-connection control program requirements.
How It Works
Our process
1
Survey
We inspect your property and plumbing system in full.
2
Identify
Every potential cross-connection is located and documented.
3
Assess
Each hazard is rated by contamination risk level.
4
Recommend
You receive a clear plan to eliminate or mitigate each risk.
On the Job
A thorough, hands-on survey
Our specialists physically inspect your plumbing to locate every potential cross-connection, then document each hazard with a clear plan to protect it.
Why cross-connections matter
Backflow at a cross-connection can pull hazardous materials into the drinking water supply.
| Cause | How it happens | Risk |
|---|---|---|
| Back pressure | Private system pressure exceeds the City supply | Contaminants forced into clean lines |
| Back siphonage | City supply pressure drops below the private system | Non-potable water drawn into the supply |
Who needs a cross-connection control survey?
A cross-connection survey is the first step in many municipal backflow programs — it identifies where contaminated water could enter the clean supply and determines what protection each point needs. Properties with complex plumbing or higher-hazard processes benefit most.
- Properties that received a survey notice from the City or region
- Industrial and manufacturing sites with process water connections
- Commercial kitchens, labs, and medical or dental facilities
- Buildings with irrigation, boilers, or auxiliary water systems
- Multi-residential and institutional buildings
- Any site unsure where its cross-connection hazards are
What to expect during a survey
Our specialists walk your property and inspect the plumbing system to locate every point where potable and non-potable water could connect — fixtures, equipment hookups, irrigation, mechanical systems, and process lines. Each potential cross-connection is documented and rated by contamination risk. You receive a clear report identifying every hazard and the appropriate backflow protection for each, giving you a concrete plan to meet your municipality’s cross-connection control requirements.
What affects survey cost?
Survey cost depends mainly on the size and complexity of your property’s plumbing. We scope the work up front and provide a clear quote.
Plumbing complexity
Industrial process water and auxiliary systems require more thorough inspection.
Number of hazards
More potential cross-connections means more documentation and assessment.
Follow-up devices
Any backflow devices recommended are quoted separately after the survey.
Received a cross-connection survey notice? Contact us to schedule and get a quote.
Questions, Answered
Frequently asked questions
Commercial, industrial, institutional, and multi-residential properties — especially those with complex plumbing or higher contamination risk — benefit from a survey to ensure no hidden hazards exist.
You receive a documented report of any cross-connections found, along with recommendations for backflow prevention devices to eliminate the risks.
Many cross-connection control programs require properties to identify and protect against cross-connections. A survey is the first step in meeting those requirements.
Yes. We provide installation, testing, and ongoing annual testing for any backflow prevention devices identified in the survey.
You receive a documented report of every cross-connection found, each rated by risk, with a recommended backflow prevention device for each point so you can plan compliance.
It varies by municipality. Many programs require an initial survey and periodic re-surveys (for example, every five years). We can confirm the requirement for your area.
Yes. We provide installation, testing, and ongoing annual testing for any backflow prevention devices identified in the survey — one team for the whole process.
More Services
We handle every backflow need
Backflow Testing
Certified testing, digital reporting, and full compliance with Toronto’s Backflow Prevention Program — handled end-to-end for your property.
Backflow TestingInstallation
Compliant installation of RPZ and double check valve assemblies by OWWA-certified plumbers — sized and installed correctly for your property the first time.
InstallationRepair & Replacement
Failed a test or have a non-compliant device? We repair or replace it, retest, and re-file with the City — restoring compliance without unnecessary delays.
Repair & ReplacementReady to get started?
Book service or request a quote — we serve commercial and industrial properties across the GTA.