Results shown below are the latest readings from the 2011/12 summer monitoring. Because there is a delay between the sampling and reporting of these results it is possible the water quality has changed. We recommend you use the following rules of thumb:
Colour code:
| Green | Should be safe for swimming |
| Amber | Should be satisfactory for swimming |
| Red | Could be a health risk for swimming |
| Site name | Date | Category |
| Waikawa Beach | 23 April 2012 | Green |
| Waikawa Estuary | 23 April 2012 | Green |
| Hokio Beach | 23 April 2012 | Green |
| Hokio Estuary | 23 April 2012 | Amber |
| Wairarawa Stream | 23 April 2012 | Green |
| Waitarere Beach | 23 April 2012 | Green |
| Foxton Beach | 23 April 2012 | Green |
| Kaikokopu Stream | 23 April 2012 | Green |
| Himatangi Beach | 23 April 2012 | Green |
| Manawatu River Estuary | 23 April 2012 | Green |
| Castlecliff Beach | 23 April 2012 | Green |
| Mowhanau Stream @ Beach Bridge | 23 April 2012 | Red |
| Kai-Iwi Beach | 23 April 2012 | Green |
| Whanganui River @ Town Bridge | 23 April 2012 | Green |
| Duddings Lake | 23 April 2012 | Green |
| Lake Wiritoa | 23 April 2012 | Amber |