For marine/salt water influenced waters there is currently no legislated safe swimming limit. Councils vary in their monitoring methodologies between faecal coliforms and Enterococci. Because E. coli is one of 4-5 bacteria that make up the faecal coliform group, Wai Kōkopu monitors E. coli at marine/salt water influenced sites.
Our reasoning for using this method is that E. coli monitoring, in addition to the Regional Council’s monitoring scheme, may allow for a better understanding of the sources of faecal pollution and public health risks. (Microbiological Water Quality Guidelines (MfE, 2003)).
Our safety limits for shellfish flesh and shellfish gathering waters are based on those set out in the Regulated Control Scheme - Bivalve Molluscan Shellfish for Human Consumption (2021).