Harmful Algal Bloom 

Posted July 28, 2022 5:00pm
From the Somerset County Health Department:
Please be aware that a Harmful Algal Bloom or HAB has been confirmed in the Millstone River at locations in leading from the Carnegie Lake to Blackwells Mills Road. NJDEP and Somerset County CEHA have posted various access points to the river. The sign designates that swimming, wading or water sports advised against at this time. Humans, and pets should not drink or ingest the water. The act of fishing or consuming fish from these waters should be done so with caution. Attached is a photo of the river and of a posting.
A harmful algal bloom (HAB) is an algal bloom that can be dangerous to people, animals or the ecology. Some, but not all, HABs produce chemicals that can be toxic to humans and animals if ingested, inhaled, or if contacted by skin or mucous membranes. These toxins can also accumulate in fish and shellfish which can cause illness when either are consumed. HABs can occur in both the freshwater and marine water environments. For additional information on freshwater cyanobacterial HABs, please visit www.state.nj.us/dep/wms/bfbm/CyanoHABHome.html.
The NJDEP Algal Bloom Sampling Status Dashboard and map can be found here: https://njdep.maps.arcgis.com/apps/dashboards/49190166531d4e5a811c9a91e4a41677