Historical Water Quality
Passed water quality tests 60-95% of the time
This status is based on the latest sample, taken on August 28th, 2025 Arundel Rivers Federation updates the status of this beach as soon as test results become available. These results were posted to Swim Guide on August 29th, 2025 at 13:59.
Capital SUP - NOT ACTIVE is sampled Weekly from May 22nd to August 29th.
About Capital SUP - NOT ACTIVE
Current Weather
Source Information
Arundel Rivers Federation monitors a variety of recreational and stream locations in the South, West, and Rhode rivers every Thursday from the week before Memorial Day through Labor Day. Sample results are generally reported on Fridays and Swim Guide is updated as soon as possible to reflect the latest results. Samples are measured for Enterococci bacteria, which serve as an indicator bacteria for pathogens in the water. Analysis is performed using the membrane filtration method (see http://water.epa.gov/scitech/methods/cwa/bioindicators/upload/method_1600.pdf). The Environmental Protection Agency has set a threshold of 104 colony forming units per 100 milliliters (cfu/100ml) as the single test limit for weekly testing. Samples recording less than 104 cfu/100ml are therefore considered "safe levels." Samples recording 104 cfu/100ml or greater are considered "unsafe" due to the increased risk of illness. Anne Arundel County Department of Health also advises advises that after a 1/2" rainfall, all Anne Arundel County beaches are under a no swimming/no direct water contact advisory for 48 hours due to predicted elevated bacteria levels from rainwater runoff and increased health risks.
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