The Regional Council is this morning warning that swimming at Lyall Bay and Island Bay “poses an unacceptable health risk.”
The information is shown in an online map in which the council assesses “recreational water quality.”
The map lists of total of 13 local swimming beaches with the unacceptable risk.
Titahi Bay and Plimmerton and Kerehana Bay are also included.
The Regional Council explains:
We advise against swimming or other types of contact recreation for up to two days after heavy or prolonged rainfall. This is because urban or agricultural runoff often affects water quality at these times. Warning signs will not always be erected when high bacteria levels coincide with rainfall. Sites with a red or amber safety alert will be re-sampled on a daily basis until results return to a safe level.