Kaiwaka Wastewater Treatment Plant Upgrade Enhances Environmental Protection
The Kaiwaka wastewater treatment facility has been upgraded with a $227,000 Supercritical UV system, tripling its disinfection capacity. This project prevents the need for a costly $1 million expansion and aims to protect local waterways effectively during heavy rain.

The Kaiwaka wastewater treatment plant now features a Supercritical UV (SCUV) system, enhancing its wet-weather wastewater disinfection capacity at a cost of $227,000. The upgrade, completed in early 2026, avoids an anticipated expansion exceeding $1 million.
This technology, developed by NovoLabs, utilizes ultraviolet light to ensure effective treatment under high-flow conditions, safeguarding local waterways and the Kaipara Harbour. The project emphasizes cost efficiency and innovative solutions in managing increased wastewater flows during heavy rain. The upgrade is significant for maintaining community confidence in local infrastructure and environmental protection measures.




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