Frequently Asked Questions

What is the Beach Monitoring Program?

The Oregon Beach Monitoring Program (OBMP) monitors recreational water quality at ocean beaches from May to September each year. We work with the Oregon Department of Environmental Quality (DEQ) to collect and test water samples. When bacteria levels are above the beach action value (BAV), we issue a health advisory for water contact. 

The goal of the OBMP is to protect the public's health by providing information about water quality, strengthening water quality standards at beaches and promoting scientific research.

How are sites chosen for monitoring?

OBMP works with DEQ to determine beaches that need monitoring based on several established criteria. These include:

• Pollution hazards
• Previous monitoring data and test results
• Type and amount of beach use
• Public input
  

When are sites re-evaluated?

As part of an adaptive sampling plan, the OBMP re-evaluates beaches and sampling locations every other year to ensure that resources are best used to protect public health.

How often is the water tested?

During the monitoring season, ocean water is sampled at monitored beaches on a 3-week rotating schedule. The schedule can be viewed on our "Beaches we Monitor" page.

When a water sample exceeds the BAV, a health advisory is issued at that beach. The water is then sampled again within 48 hours. 

What do you test for?

Ocean water is sampled for a type of fecal bacteria called enterococcus. When enterococcus is found in the water, it can mean that other types of bacteria are present too. Enterococcus can cause some people to become sick, but is generally considered less harmful than other kinds of fecal bacteria. 

Where does the bacteria come from?

Bacteria in coastal waters can come from different sources, both near the shore and inland. These include:

• Development
• Sewage treatment plants
• Leaking septic tanks
• Storm water runoff
• Boating waste
• Human and animal waste 

High bacteria levels are often associated with rainstorms. Because of this, people are advised to avoid water contact for 48 hours after heavy rain.

How will I know if there is a beach advisory?

Beach advisories are announced in a few different ways:

1. Information about advisories is shared with the media (television, newspaper, radio), local authorities and the public (via the OBMP listserv). 
2. Advisory information is posted on OHA webpages (Current Beach Conditions and Recreational Advisories).
3. Advisory signs are posted at the impacted beach. 

What does it mean when an advisory is issued?

When a health advisory is issued for a particular beach, it means that contact with the water is discouraged. Avoid any activities where you might swallow water, like swimming, surfing, diving and kayaking. Wash your hands thoroughly before eating if you've been in or around water that has above normal bacteria levels. 

Pet owners are advised to keep their pets out of the water during an advisory to keep them from drinking it.

What will happen if I swim in water with high levels of bacteria?

Exposure to bacteria in the water can cause symptoms like: 

• Nausea
• Diarrhea
• Stomach cramps
• Chills
• Fever

Skin rashes and infections of the eyes, ears, nose and throat may also occur. Contact your health care provider if you experience any of these symptoms, and consider submitting an illness report.

Children, the elderly and individuals with weakened immune systems have a greater chance of getting sick when they come into contact with contaminated water. Learn more about water-related illnesses. 

Can I still go to the beach when there is an advisory?

Absolutely! OBMP does not close beaches and only issues health advisories for water contact. There are plenty of fun, safe activities to do at the beach that don’t involve water contact. These include: 

• Walking and playing on the beach
• Flying kites
• Picnicking
• Visiting local shops

Where can I get more information about the program?

Browse this website or contact us.