This time, lab results from a sample collected on Nov. 30 show high levels of microcystin, according to a news release from Thurston County.
“Microcystin is a liver toxin which accumulates over time,” the news release stated.
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Children shouldn’t use the water for teeth brushing either, officials say.
“Our primary concern is for public safety,” said Thurston County Health Officer Dr. Rachel Wood.
The health warning will remain in effect until samples are within safe levels for two weeks in a row.
A water station is open at Camp Thunderbird, 11740 Summit Lake Road NW.
Residents can bring containers to fill at the water station from 4 to 7 p.m. Last spring, the lake had an outbreak of Anatoxin-A, which is a neurotoxin, prompting Thurston County Board of Health to declare a state of emergency at the lake in May.
Lisa Pemberton: 360-754-5433, @Lisa_Pemberton