Introduction
Backflow prevention is crucial for a clean and safe water supply in residential and commercial properties. At Robinson Plumbing we protect your water systems from contamination. This article explains the risks of backflow, the importance of prevention devices and why maintenance is not optional.
What is Backflow and Why Does It Happen?
Backflow is the reverse flow of water in your plumbing system which can pull contaminants into your drinking water supply. Two main causes are:
- Back Pressure: When the internal water pressure is greater than the mains supply, water flows backwards.
- Back Siphonage: A sudden drop in mains pressure—caused by a burst water main or fire fighting—can suck contaminated water back into the supply.
Why is Backflow Dangerous?
Without prevention backflow can:
- Contaminate your water with chemicals or waste.
- Pose serious health risks from bacteria or toxins.
- Damage plumbing systems and appliances by introducing pollutants.
Backflow Prevention Devices
Backflow prevention devices stop reverse water flow and keep drinking water safe. Here are the most common:
- Air Gap: A physical gap between a water outlet and contamination points.
- Double Check Valve: Two valves working together to prevent backflow.
- Reduced Pressure Zone Device: For high risk situations.
- Dual Check Valve: For low risk properties.
What Backflow Device is Right for You
The right device for your property depends on the risk level:
- Low Risk: For minimal contamination risks.
- Medium Risk: Requires more robust prevention.
- High Risk: Needs the most protection.
Installing Backflow Prevention Devices
A licensed plumber should install your device. Proper placement in your water supply system is critical for it to work. For high risk properties a reduced pressure zone unit may be required.
Maintenance and Testing: Non-Negotiable
Maintenance is crucial to keep backflow prevention devices working. This includes:
- Inspections: Regular checks to ensure devices are working.
- Testing: Annual backflow test reports to prove the system is working.
- Repairs: Quick fixes to keep your water supply safe.
Compliance and Record Keeping
Backflow regulations are not optional—they’re law. Compliance means:
- Meeting Local Standards: Standards vary by location.
- Keeping Records: Keep records of device installation, testing and repairs for inspections.
Common Backflow Situations
These everyday scenarios can cause backflow:
- Hose in Water: A garden hose left in a bucket or pool can suck water back into the system.
- Bore Pump Connections: Poorly installed pumps can introduce contaminants.
- Fire Fighting: Sudden pressure drops during an emergency can cause backflow.
Water Quality Protection
To protect your drinking water supply:
- Regular Testing: Get your device tested annually.
- Quick Repairs: Fix faults as soon as you find them.
- Stay Informed: Learn how to protect your water.
Contact Robinson Plumbing
At Robinson Plumbing we do backflow prevention services, installations to annual testing. We have years of experience and can help with any property type. Protect your health, property and water quality today.
