Don’t drink the water.

That’s what state health officials are saying about Odell Lake.

The Oregon Health Authority issued a recreational use health advisory Friday after high levels of cyanobacteria and the toxins they produce were found in the mountain lake southeast of Willamette Pass along Highway 58.

Water monitoring detected the cyanotoxins at concentrations that can be harmful to humans and animals, the health authority said.

Cyanotoxins are produced by algae blooms. The same toxic algae has been a problem this year at Detroit Lake, a reservoir not only popular with recreationists but the source of Salem’s drinking water. Since late May, the city repeatedly has issued tap water advisories warning young children and other vulnerable groups to drink bottled water.

At Odell Lake, health officials warned against drinking water directly from the lake. The toxins cannot be removed by boiling, filtering or otherwise treating the water, they warned.

Ingesting water with cyanotoxins can cause an upset stomach, vomiting, diarrhea, possible liver and kidney damage, sickening or, in extreme cases, killing people and animals. Other symptoms of exposure include numbness, tingling, dizziness and — in people with skin sensitivities — a red, puffy rash.

However, with proper caution, people can enjoy activities at the Klamath County lake such as fishing, camping, hiking, picnicking and bird watching, the health authority said.

On Friday evening, a Deschutes National Forest spokeswoman said the state health advisory would be posted at all of its campgrounds and day-use areas around the lake. Water from taps at its Sunset Cove and Trapper Creek campgrounds is safe to drink, the spokeswoman, Cassidy Kern, said. A third campground, Princess Creek, does not have a water system.

John McDevitt, general manager at Odell Lake Lodge & Resort, said the property draws water from a well, which is tested regularly and safe to drink.

Kern said a follow-up sample will be taken once the algae bloom has cleared.

If the toxin levels have subsided, the health advisory will be lifted.

“I wouldn’t expect it to last all summer,” she said.