"The advice from health authorities has always been to avoid swimming for three days after heavy or prolonged rainfall, and this new regime will show why this remains sound advice."
She says the key thing to remember is that although the monitoring is likely to reveal more exceedances of contamination guidelines this summer, it won't necessarily mean overall water quality is getting worse.
"This summer we expect to see more exceedances of contamination guidelines because now we'll sometimes be sampling at times when run-off has contaminated the water. As in the past, all results will be available online.''
The council has been monitoring recreational water quality for the past 25 summers and Abby says the work has served the region well.
"Up until now, our system's been designed to target weather conditions when people are most likely to be swimming. It has also allowed us to focus on identifying contamination from other sources, which would be masked by run-off contamination. This summer our focus will be on keeping people informed of the suitability of rivers, lakes and beaches for swimming and recreation during a range of conditions. We'll also be bringing the monitoring programme into alignment with new national policy requirements."
She says it's important to remember that in general, coastal waters are of very good quality and freshwater swimming spots are mostly of good quality.
"There can be some problem areas from time to time."
This year the council will be monitoring waters at 40 sites across coastal beaches and freshwater swimming spots. Results are graded using a traffic light system: green is good for swimming, orange means caution is advised, while red means a site is currently unsuitable for swimming.
Monitoring started on November 1 and results will be posted at www.trc.govt.nz and www.lawa.org.nz as soon as they are available – look for the "Can I Swim here?" pages. District councils will issue any warnings that may be necessary. Contamination guidelines are set nationally.
The first test results will be available today. For more information see https://www.trc.govt.nz/environment/maps-and-data/can-i-swim-here