There are approximately 35 environmental coastal monitoring (ECM) stations within the state. Stations are located at areas where primary recreation may be occurring, but the area is not regulated as a public recreational bathing beach. The DEP has divided the coast into three regions, sampling occurs at one region a week and regions are sampled on a rotating basis. Samples are analyzed for the presence of Enterococci, a type of bacteria found in animal and human waste that is an indicator of possible poor bathing water quality. When a sampling site for ECM fails to meet the primary recreation standard of 104 colony forming units of enterococci per 100mL of sample (cfu/100 mL), an advisory is posted on this website. An advisory remains until the station is resampled and results are within the standard. Resamples are collected again when the sampling rotation returns to that region. Therefore, an advisory can last for several weeks before resamples are collected. DEP samples, analyzes, coordinates response activities, and administers the ECM.
The DEP does not authorize swimming in locations other than lifeguarded areas. See njbeaches.org for water quality, status, and locations of coastal public recreational bathing beaches.