Summit Lake Blue-Green Algae
On May 13, 2014, a lake water sample
with blue-green algae in it was delivered to our office by a
lake resident. The sample was sent to King County
Environmental Lab to test for algae toxins. The result
showed the presence of the toxin Anatoxin at a
concentration slightly above the health advisory level of 1
ug/L (part per billion). Anatoxin is a potent
neurotoxin produced by a few species of blue-green algae.
After consulting with Washington
Department of Health, county health staff collected
additional lake water samples from multiple sites around the
lake and from two drinking water taps on May 21, 2014.
Anatoxin was present in all of the samples, but in
very low amounts that were all well below the health
advisory level. The sample locations and results
Click Here for Results
As a follow up, another 4 samples
were collected May 28, 2014 and
sent for analysis. County Health Department staff will continue to sample
the lake weekly; until the algae toxin is no longer detected.
See resources below for more information.
Summit Lake Community Meeting
On Thursday, June 5, 2014 a regularly scheduled Summit
Lake homeowners meeting was held. Staff from the Health
Department were invited to attended the meeting to provide
information and answer questions property owners may have
regarding blue-green algae blooms and Anatoxin levels found in water samples taken
by a Summit Lake volunteer and county staff.
Click here for the list of questions and answers.
Volunteer for Lake Watch
Thurston County is looking for volunteers to help
"watch" local lakes for algae blooms. Volunteer
activities may include:
- Contacting us when you see an algae bloom.
- Taking samples and delivering them to the Health
Department on Lilly Road.
- Posting warning signs.
- Distributing toxic algae alerts to your neighbors.
To become a Lake Watch Volunteer, you can either
print, fill out and send us the
attached sign up form (click
you can enter your information and submit
the form electronically.