POINT PLEASANT -- Health officials lifted a water quality advisory on June 11 at a Point Pleasant beach along the Manasquan River, but issued new advisories at three new swimming sites in Monmouth and Ocean counties.
Water samples collected June 10 showed that bacteria levels of Enterococci at the River Avenue beach in Point Pleasant had fallen to levels considered safe for swimming, according to data from the New Jersey Department of Environmental Protection. Earlier in the week, this bacteria common in feces were discovered at levels (260 colony forming units per 100 milliliters of water) that exceeded the state's safe swimming threshold, which is 104 colony forming units per 100 milliliters.
As health officials lifted the advisory at the River Avenue beach, they issued other warnings at Cedar Bridge Manor Park in Brick, where Enterococci measured at 150 colony forming units in samples collected June 10, according to the environmental department.
A swim advisory was also issued at Keyport Beach, where water samples collected June 10 had bacteria levels at 180 colony forming units, according to the state department.
Plum Island on Sandy Hook also tested high for bacteria, with levels at 170 colony forming units in samples taken June 10, according to the Department of Environmental Protection.
In large amounts, Enterococci can signal that other illness causing organisms, like viruses, are present in water. These microbes can cause gastrointestinal distress and skin infections, as well as infections of the ears, nose and throat.
Children, older adults and people with weak immune systems are the most at risk of becoming sick after contact with contaminated water.
In the right conditions, like a sunny day, bacteria levels in water can fall quickly when the microbes are exposed to UV light, according to the University of Nebraska.
In Cape May County, a swim advisory remains at 104th Street at the bay in Stone Harbor.
Despite the advisories, the beaches remain open to swimming. If subsequent water tests show lasting high bacteria counts, health officials will close the beaches.
Amanda Oglesby is an Ocean County native who covers education and the environment. She has worked for the Press for more than 17 years. Reach her at @OglesbyAPP, [email protected] or 732-557-5701.