Okaloosa County investigates massive suspected contamination event in Cinco Bayou

Okaloosa County investigates massive suspected contamination event in Cinco BayouCounty water and sewer crews conducted emergency inspections of local lift stations and wet wells after a sudden environmental incident caused severe oxygen depletion and widespread aquatic die-offs across 3.5 miles of local waterways.

A rapid-onset environmental incident in Cinco Bayou and Five Mile Bayou resulted in gray water, severe sulfur odors, and the death of thousands of crabs and fish.

Okaloosa County Water and Sewer personnel conducted emergency inspections of all local lift stations and wet wells to rule out municipal wastewater spills.

The Florida Department of Environmental Protection (FDEP) and the Department of Health are collaborating with local officials to identify the point source of the contamination.

Initial field tests indicated critically low oxygen levels in the water, with comprehensive water quality test results expected in the coming days.

Okaloosa County, Florida, is investigating a significant water quality anomaly in Cinco Bayou and Five Mile Bayou after a rapid-onset contamination event caused widespread ecological damage. The incident, which first came to light over a weekend, impacted approximately 3.5 miles of the local waterway. Chairman Trey Goodwin reported that the water turned gray and emitted a severe sulfur-like odor that could "knock you down." The event triggered a massive die-off of aquatic life, killing thousands of crabs and forcing fish and eels to flee the water onto seawalls and banks. Initial field tests conducted by county personnel revealed critically low dissolved oxygen levels in the affected waters, which explained the rapid aquatic mortality. In response to the crisis, Okaloosa County Water and Sewer mobilized an emergency response team to determine if municipal wastewater infrastructure was the source. Utility staff, led by Mike Hackett alongside Brian Williams and Kenyon Miles, conducted physical inspections of every county lift station and wet well in the vicinity. According to Goodwin, the utility reviewed operational data and physical sites to eliminate municipal wastewater infrastructure as the point source. The City of Fort Walton Beach's public works department conducted similar investigations of their local systems. State regulators, including the Florida Department of Environmental Protection (FDEP) and the Department of Health, have been engaged to assist in identifying the source of the contamination. Comprehensive water quality testing is currently underway, with multiple levels of analysis expected to provide further details to investigators in the coming days. While the exact point source remains unidentified, local utility and state agencies continue to monitor the bayou's changing conditions.