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Protecting Mackay’s Water Supply with Expert Backflow Services
Backflow can pose a serious risk to your water supply—especially for businesses, multi-unit dwellings, and properties with irrigation or fire systems. At DePinto Agencies in North Mackay, we provide certified backflow testing and prevention services to help protect your drinking water from contamination. If your system hasn’t been tested recently or your backflow device is due for inspection, we’ll take care of it quickly and compliantly, with minimal disruption to your day.
- Licensed Backflow Specialists
- Fast, Hassle-Free Testing
- Fully Compliant Reports
Our team is qualified to test, maintain, and lodge results for backflow prevention devices across
residential,
commercial, and industrial properties. For prompt, professional service throughout Mackay, call
07 4969 0511 and get your backflow testing sorted with ease.
Safe, Compliant Solutions
Backflow occurs when water flows in the opposite direction, pulling contaminants like chemicals, bacteria or sediment into your clean water system. Backflow prevention devices are required by law in many Queensland properties and must be tested annually by a licensed technician. Whether you manage a café, school, warehouse, or rental property, regular testing ensures your backflow device is working as intended—and keeps your water supply safe.

At DePinto Agencies, we conduct thorough on-site testing and submit results directly to the local authority. If your device needs maintenance or replacement, we’ll let you know and provide a clear plan of action. With over 25 years of plumbing experience and membership in the Master Plumbers Association of Queensland, you can rely on us to keep your water supply secure and your compliance up to date.
What is backflow and why is it dangerous?
Backflow is the unwanted reverse flow of water from a property’s internal plumbing system back into the main water supply. This reversal can carry contaminants such as pesticides, chemicals, or waste into clean water lines. It poses serious health risks and may result from sudden changes in water pressure, such as during firefighting or burst mains. Preventing backflow is essential for maintaining safe, potable water for both the property and the broader community.
How often does backflow testing need to be done?
In Queensland, backflow prevention devices must be tested annually by a licensed tester. The results must then be lodged with the local water authority. Regular testing ensures the device is still working correctly and that your property remains compliant with safety regulations. Failing to complete testing on time can result in fines and compromise your property's insurance coverage or liability protections.
What happens during a backflow test?
During a backflow test, a licensed plumber will shut off the water briefly, inspect the backflow device, and run a series of checks to verify pressure levels and valve operation. The test confirms whether the device prevents reverse flow effectively. If the device passes, the plumber completes the compliance paperwork and lodges it with your local council. If it fails, they will advise on repairs or replacement options and arrange a retest if needed.
