 who live in Keaukaha and Panaeva. Several said their kids were in the water all day on Friday and only learned through social media and word of mouth that the water might have been unsafe for swimming due to high bacterial levels. Others noticed some signage during mid to late afternoon that day. Department of Health said the county started erecting warning signs starting at 2 p.m. that said it was unsafe to swim or fish because of sewage-contaminated water. Yikes. And exposure could result in illness.