Established in 1986, NOAA’s National Mussel Watch Program has been systematically monitoring nearly 600 chemical contaminants (including legacy organic contaminants, trace metals, and contaminants of emerging concern) and biological indicators for the establishment of baseline contamination levels in coastal waters around the U.S., including the Great Lakes, Puerto Rico, and U.S. Virgin Islands. CSS employee owners have played an integral role in supporting this effort.

Each year the Mussel Watch Program Coordinator — a role filled by a CSS employee owner — devises a schedule, organizes missions, establishes local partnerships, and ships materials to collection sites. Additionally, the program coordinator meets with the partners and collection teams prior to collection missions to provide specific guidance on collecting and preparing samples, packing sample bags, filling in data sheets, taking photos, packing the coolers with ice, and shipping samples to the laboratory. This coordination is critical to ensuring collection missions are successful.

Cooler packed with ziploc bags of oysters and ice.
Mussel Watch Program Coordinator instructs teams to double bag oysters and pack them on ice.

A substantial collaboration in the 2026 South Atlantic Coast collection survey was with the South Carolina Department of Natural Resources (SCDNR). CSS employee owners joined SCDNR for sample collection along the South Carolina coast, leveraging their boats, equipment, and resources. Two teams volunteered to collect samples at 16 sites, coinciding with adjacent SCDNR collection sites needed for their own projects and research. For each site, the team collected three resealable bags of oyster samples, and recorded water quality data at each location. The team double bagged the samples, packed them on ice in coolers with specific labeling, and shipped them to the laboratory where they will be analyzed.

Three people collect oysters along a river bank.
The team collects oysters quickly to avoid being stranded at low tide in the Ashley River.
Person in a boat next to an island covered in oyster shells.
The team battled a strong current and waves while collecting oysters in the middle of Charleston Harbor.

CSS employee owners will work with the Mussel Watch Program federal lead to summarize the laboratory results and publish a series of technical memoranda. This data and information can help regional managers and stakeholders understand historic and current trends as they develop strategies to monitor and assess contaminants in the region. 

Visit the website to learn more about the Mussel Watch Program. 

This effort supports the RPI-CSS joint venture contract with NOAA’s National Centers for Coastal Ocean Science.

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