By LRWP Monitoring Outreach Coordinator Jocelyn Palomino

Every Thursday from May to October, the Lower Raritan Watershed Partnership and Rutgers Cooperative Extension of Middlesex County run a volunteer-based monitoring program along the Raritan river. During the summer, we collect water quality samples at six non-bathing public access beach sites, provide our samples to the Interstate Environmental Commission for analysis in their laboratory and report the results to the public on Friday afternoons. Our mission is to share this data with the community and partners to ensure the safe use of the Raritan river for all.

Our lab results for water quality samples taken on Thursday September 19, 2024 show Enterococcus bacteria levels exceeding the EPA federal water quality standard of 104 cfu/100mL at FOUR of our monitoring sites this week. Problem sites are indicated by red frowns on the map and chart which includes: Riverside Park (Piscataway), Rutgers Boathouse (New Brunswick), Edison Boat Basin (Edison) and 2nd Street Park (Perth Amboy). Green smiles on the chart and map indicate the sites with bacteria levels safe for recreation, which include: Ken Buchanan Waterfront Park (Edison) and South Amboy Waterfront Park (South Amboy).

Pathogens/Enterococci levels are used as indicators of the possible presence of disease-causing bacteria in recreational waters. Such pathogens may pose health risks to people coming in primary contact with the water (touching) through recreational activities like fishing, kayaking or swimming in a water body. Possible sources of bacteria include stormwater runoff, Combined Sewer Overflows (CSOs), improperly functioning wastewater treatment plants, leaking septic systems, animal carcasses, and runoff from manure storage areas.

Our goal in reporting these results is to give residents a better understanding of the potential health risks related to primary contact during water-based recreation. If you decide to recreate on Raritan this weekend, please keep this data in mind and wash up properly after any activities!

Just two more weeks left of summer monitoring!! As always, BIG thanks to our volunteers who joined us in the field this week: Irene Riegner, Sofi Grossman, Frank Dahl, and Art Allgauer.

Frank Dahl manning the YSI at Riverside Park in Piscataway, catch a glimpse of the real-time numbers Frank was looking at in the second picture. Photo Credit: Jocelyn Palomino

Stagnant waters at the Rutgers Boathouse caused a scummy buildup across the surface of the Raritan, we also spotted a dead fish among the pile of debris next to bottles, bottles, and more bottles! Photo Credit: Jocelyn Palomino

Tuesday’s Supermoon greatly affected the tides Thursday morning, some of our sites were too flooded to access but luckily we had waders ready, Photo Credit: Art Allgauer

The carcass of what appeared to be a juvenile black-backed gull washed up on the boat ramp at LR4- Ken Buchanan Waterfront Park, Photo Credit: Jocelyn Palomino

At LR5- South Amboy Waterfront Park, we also had some interesting finds as a result of aquatic life being washed up from the high-tide. Apart from dozens of horseshoe crabs molts, we spotted a dried up Manta stingray right along the shoreline- which was a first for us! Photo Credit: Jocelyn Palomino (left) and Art Allgauer (right)