We sometimes get questions from members and potential members about whether Woodside Lake is safe to swim in. The answer is ABSOLUTELY! This is one of the benefits of a spring fed lake.
Specifically, Woodside Lake is tested once a month in May through September (i.e. swimming months) for fecal coliform bacteria. According to the Virginia Department of Health (using EPA standards), the presence of fecal coliform bacteria should not exceed an average of 200 fecal coliforms MPN per 100 ml from two or more samples (see http://www.fairfaxcounty.gov/hd/streams/recstate.htm). Woodside Lake was last tested on July 22, 2014. The results of the two collections were 18 and 1.8, for an average of 9.9, which is well below the recommended upper limit of 200 fecal coliforms MPN per 100 ml.
If the lake is ever unsafe to swim in, the Lake Association will notify members immediately and post that information on this website.