Swimming Water Quality
The map below provides a summary of monitoring results from more than 80 popular coastal, river and lake recreation sites around the Bay of Plenty. Sites are monitored for faecal contamination (bacterial monitoring) from October to March each year and for toxin-forming algae species (algal bloom monitoring) from October to June each year. Click on the area of interest for more detailed information.
You should avoid swimming in rivers for 48 hours (two days) after heavy or prolonged rain. This is because the water can be contaminated by farm and urban run-off.
If you suspect an algal bloom is present, don't swim or take part in an activity that may result in accidental consumption or exposure to water affected by algal blooms.
The Three Tier System for Swimming Water Quality
Highly likely to be uncontaminated. 'Suitable' for bathing, but requiring water managers to continue surveillance or routine monitoring.
Potentially contaminated. 'Potentially unsuitable', requiring water managers to undertake further investigation to assess suitability for recreation.
Highly likely to be contaminated. 'Highly likely to be unsuitable', requiring urgent action from water managers, such as public warnings.
- For further information on microbiological water quality monitoring, visit our monitoring information page.
- For further information on toxin-forming algae species visit our algae page.
- For more information on the health impacts and symptoms from accidentally coming into contact with contaminated water, please go to the Toi Te Ora - Public Health website.
- Visit the Rotorua Lakes Lake Health Warnings page for information on algal blooms in our lakes and our Rivers Health Warnings page for information on algal blooms in our rivers, or contact us on 0800 884 880.