Hawke’s Bay Wide Backflow Prevention Installation.
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Isaac’s are certified to carry out testing and installation of backflow preventers as an Independent Qualified Persons (IQP).
Backflow is the unwanted reversal of water flow in a plumbing system. It can occur when the normal flow of water is disrupted, causing (possibly) contaminated water to flow backward into the reticulated water supply.
| Which types of backflow preventers are used? | Risk | Activity | Device | Testing |
|---|---|---|---|---|
| 1. Reduced Pressure Zone Device (RPZ) | High | Uses or produces toxic or bacterial matter that may cause death or serious illness if leaked into the main water supply | Reduced pressure zone | Annual |
| 2. Testable double check valve | Medium | Produces backflow that can endanger health | Testable double-check valve | Annual |
| 3 Dual check valve | Low | Could cause a nuisance from colour, smell or taste but does not endanger health | Dual check valve | Non-testable. Replaced as part of routine asset renewal programme. |
How did you decide where to install them?
The devices are installed at the property boundary and are installed where a risk to backflow has been identified. All properties require a backflow preventer appropriate to the risk that is being managed.
We are an accredited Meter Installation and Verification Company registered with both the Hawke’s Bay Regional and District Council. The Regional Council has been working with councils across New Zealand, as well as with Irrigation New Zealand (INZ) – to ensure national consistency with Water Meter Regulations. By using a Blue Tick Accredited company like Isaac’s Plumbing Pumping and Electrical to undertake your work, you will know that we are aware of the rules and regulations that must be complied with on your behalf.
What does this means in short?
We are certified by Irrigation new Zealand for water meter testing, installation, and bore security.
