A swim advisory has been issued by the Seneca-Cayuga Nation Environmental Department for Elk River and Sycamore Creek in Ottawa County due to elevated E. coli bacteria levels.

 Officials urge the public to avoid swimming or water contact in those waters. Recent testing shows bacteria levels have exceeded safety limits set by the State of Oklahoma for high-use recreational waters. E. coli, a fecal indicator bacteria, can signal the presence of other harmful pathogens in the water. Health risks associated with exposure include abdominal pain, nausea, fatigue, diarrhea, and in rare cases, vomiting or fever.

 Officials say consumers should avoid swallowing water or swimming with open cuts or if you're feeling ill. Bathe thoroughly after swimming or any water contact, and refrain from swimming or engaging in water activities in Elk River and Sycamore Creek until further notice.

 The advisory does not currently apply to Grand Lake or Buffalo Creek, however, the Environmental Department is monitoring those areas.

 The advisory will remain in place until test results show bacteria levels have returned to safe levels.