The department conducted the tests in conjunction with the Puget Sound Institute.
It's possible, however, that the opioids could affect fish, which are known to respond to the drugs, James added. However, this is the first time scientists at the Puget Sound Institute discovered opioids in shellfish. When humans ingest opioids, traces of the drug end up in the toilet, CBS News said.
While the mussels themselves likely don't metabolize the drug - and therefore shouldn't be affected by it - the fact that it's there raises concerns about the fish in the area.
The reason mussels are the preferred test subject to track toxins in marine life is because they are filter feeders, eating microscopic plants and animals that they strain out of seawater.
Of the 18 locations scientists used, three showed traces of oxycodone. "They receive the water that comes from our toilets and our houses and our hospitals, and so these drugs, we're taking them, and then we're excreting them in our urine so it gets to the wastewater treatment plant in that way", Lanksbury said.
Also in 2016, the National Oceanic and Atmospheric Administration estimated that almost 300lbs (136kg) of pharmaceuticals, personal care products and industrial compounds ended up in the Puget Sound each day, some at high enough concentrations to negatively impact fish.
"Hopefully our data shows what's out there and can get the process started for cleaning up our waters", she said.
"We sent 18 samples (of mussels) to a laboratory up in Canada and asked for a suite of pharmaceutical and personal care products", Lanksbury said. Citizen science volunteers stake the cages to the inner tidal area of the Puget Sound at low tide, and the scientists collect them after several months.
She says mussels at a restaurant or store are healthy because they come from clean locations.
Almost two decades ago, the U.S. Geological Survey conducted a study and found "measurable amounts" of medications in a whopping 80 percent of water samples that were collected from 139 steams across 30 states. Two of the areas were close to the historic naval shipyard district, and the other one was in Elliot Bay near Harbour Island, Seattle.
Every other year, the department specifically monitors herring, English sole, Chinook salmon and mussels for contaminants.
It outlawed all abortions until 2014, when the procedure started being allowed in rare cases when a woman's life was in danger. He said there appears to be "a greater than 2-to-1 majority in favor of amending our constitution".
It is a journey that has attracted a lot of attention - last night's Game 5 pulled in a 7.0 in metered market ratings for TNT . Kevin Durant scored 29 points for the Warriors, who lost in Game 5 of a playoff series for just the second time since 2015.
Bale told BT Sport : "I need to be playing week in, week out, it hasn't happened this season for one reason or another". "It was handsome to be at Real Madrid ", the Portugal forward told television network beIN Sports after the game.
Output in the South American nation fell to just 1.43 million barrels per day in April, down almost 700,000 bpd from 2016 levels. Here is a look at how share prices for two blue-chip stocks and two exchange traded funds reacted to this latest report.
There is no real treatment but supportive care is given to the affected patients, which means treating the symptoms differently. Some can also experience atypical pneumonia and severe respiratory problems, including acute respiratory distress.
In the clip shared on her Twitter account, McGowan filmed a selfie video in which she said, "Happy Birthday, Harvey Weinstein ". When another asked him, "What can you say?" He will reportedly face criminal charges of rape and criminal sexual act.
Experts are divided over why Kim has unleashed such a strong diplomatic charm offensive. "That hasn't changed ", Trump added. The South Korean president called on both sides to hold working-level talks that may help resolve these differences.
But he endured a scoreless first half, which put a spotlight on him after the Cavaliers separated a bit during the second quarter. Following Cavs head coach Tyronn Lue's conference call with the media, the team formally announced that Love will miss Game 7.
Trump not backing down on 'spy' allegations
He gave important attention to the alternative scenario that he and some of his conservative allies have been promoting. No matter what ludicrous charge Trump makes, the entire political system reacts as though it might be true.
Tropical Storm Warning In Effect
Rick Scott declared a state of emergency in all 67 counties on Saturday in preparation for Subtropical Storm Alberto . Phil Bryant authorized the use of the National Guard "and other state resources ... should they become necessary".
2 injured in IN school shooting, suspect arrested
Southern Illinois University Carbondale says Seaman was a defensive lineman on the Salukis football team from 2007 to 2010. Sandy McWilliams, a member of a landscaping crew, said six officers with assault rifles entered a home.
Real Madrid vs. Liverpool - Football Match Report
And it appears Carragher couldn't help himself in getting caught up in the excitement ahead of Saturday evening's final. However, Carragher has always known the England midfielder would make it with the Champions League finalists.