A beach is marked Grey when current water quality data is not available.įor more information go to King County Swimming Beach Bacteria Monitoring website: /swimbeach. Public Health Seattle & King County is alerted when bacteria or state algal toxin thresholds are exceeded and determines the health and safety implications of the bacteria and algal toxin data collected, and they work with King County WLRD and the local park manager to post an advisory.Ī beach is marked Green (open) when both of these protocols are met.Ī beach is marked Red (closed) when these criteria are not met and the public health officials have closed the beach.Ī beach may also be marked Red if there is a Harmful Algal Bloom (HAB) reported at the beach. The King County Water and Land Resources Division (WLRD) collects and analyzes the samples. The unit of measure is a CFU which stands for Colony Forming Units. The three-day average is calculated using the geometric mean (geomean). coli values for the three most recent sampling days is over 200 CFU/100 mL.

coli value is over 1000 CFU/100 mL – OR - The average of the E. Local health officials use the following protocol to make closure determinations – A day’s average E. Results are generally posted to the King County Lake Swimming Beach Bacteria Monitoring page by noon on Wednesday. Water quality data is collected weekly, usually on Tuesdays. The King County Department of Natural Resources and Parks monitors water quality at designated swimming beaches in the county from May to September. Grey means there is no current water quality information, the beach is under construction, there has been an event that has rendered water quality information unreliable or unavailable. Red means the water at the site has water quality issues or there is an emergency. This status does not indicate current water quality. This means that this site has been issued a Blue Flag status for the current swimming season. We may manually set the status for a specific beach if we have concerns about the sampling protocol, if there is an emergency, if monitoring practices don't exist or have recently changed, or other reasons that render this site 'special.' Red means the beach failed water quality tests 40% of the time or more. Yellow means the beach passed water quality tests 60-95% of the time. Green means the beach passed water quality tests 95% of the time or more.

This means that rather than displaying current data it displays the beach's average water quality for that year. When swimming season is over or when a beach's water quality data has not been updated frequently enough (weekly) it goes into historical status. Additional Information About 0 Hidden Lake Parkway 32, Nebo, McDowell County, NC, 28761 0 Hidden Lake Parkway 32, Nebo, McDowell County, NC, 28761 is currently for sale for the price of 27,000 USD. Grey means water quality information for the beach is too old (more than 7 days old) to be considered current, or that info is unavailable, or unreliable. Red means the beach’s most recent test results failed to meet water quality standards. Green means the beach’s most recent test results met relevant water quality standards.

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