The swim beach at Vancouver Lake will remain closed at least through the weekend after new test results revealed elevated levels of cyanotoxins in the water.

Clark County Public Health has been monitoring cyanobacteria blooms, also known as blue-green algae, at Vancouver Lake since June 12. Public Health closed the swim beach on July 24 after test results revealed cyanotoxins above recommended threshold levels.

Results from water samples collected Monday show that cyanotoxins remain above threshold levels. As a result, the swim beach closure will remain in place. Public Health will continue to collect weekly water samples to test for toxins and update advisories as conditions change. Water samples will be collected again next week.

Public Health is advising against all recreating in the lake, including swimming, kayaking, paddle boarding, canoeing and water skiing.

Blue-green algae can pose a significant health risk if the cyanobacteria or toxins are ingested, inhaled or come into contact with skin. Inhaled bacteria or toxins can cause wheezing, coughing, chest tightness and shortness of breath. Skin contact can lead to rash, itching, blisters and eye irritation.

If water with cyanotoxins is accidentally swallowed, symptoms can include abdominal pain, diarrhea, vomiting, numbness of the lips, tingling in fingers and toes, and dizziness. The toxins can be fatal to pets that drink the water.

E. coli test results

On Monday, Public Health also collected water samples from Vancouver Lake to test for bacteria. One of five samples came back with elevated levels of E. coli bacteria. Results from follow-up samples collected on Tuesday show that E. coli levels have dropped below threshold levels.

Public Health will continue routine monitoring of bacteria levels at Vancouver Lake and the county’s two other designated swim beaches – Klineline Pond and Battle Ground Lake – through Labor Day.

Current advisories are posted on the Public Health public beaches webpage.

CONTACT
Marissa Armstrong
communications specialist
Public Health
564.397.7307
marissa.armstrong@clark.wa.gov