New Zealand schools see fewer E. coli detections in water
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Taumata Arowai, the Water Services Authority in New Zealand, reported a 16 percent decrease in E. coli detections in drinking water at schools with their own supplies during 2025.
The authority collaborated with the Education Ministry to improve water safety practices. This work resulted in fewer long-term drinking water advisories for schools, dropping from 17 to seven in the same period, and increased reporting of issues to the authority. The report also showed broader improvements in public water supplies.
Large council supplies meeting or nearly meeting requirements increased from 49 to 77 percent between 2023 and 2025. The number of supplies with bacterial treatment barriers rose from 96 to 98 percent, while those with protozoal barriers, which protect against single-celled bacteria and viruses, increased from 76 to 90 percent. Despite these gains, Taumata Arowai noted ongoing challenges.
At the end of 2025, at least one water supply in 33 council areas lacked a basic treatment barrier, and 51 supplies still missed protozoa barriers, impacting 311,000 people. Steve Taylor, head of operations at Taumata Arowai, stated the authority will continue working with suppliers to address these gaps and issued four directions in 2025 requiring action to protect drinking water.
