(Portland, OR) -- The Oregon Health Authority will start issuing warnings about dogs that have gotten sick or died, because they drank water from a river or lake that might be contaminated with toxic algae blooms. They often receive reports from veterinarians about dog illnesses related to water, but the cause isn't immediately known. Testing for the toxic algae can take two weeks. The notifications about dogs are expected to give earlier warnings about the potentially dangerous toxic algae blooms.