Virginia Regulatory Town Hall
Agency
Virginia Department of Health
 
Board
State Board of Health
 
Guidance Document Change: The Guidance for Cyanobacteria Bloom Recreational Advisory Management requires revision for the Harmful Algal Bloom (HAB) response season, beginning in April 2025. The proposed revision includes the DEQ and VDH staff recommendations, which allow for more extensive and targeted monitoring of algal toxins in recreational freshwater areas during a HAB, and for using toxin data alone for recreational advisory determinations. These recommendations are based on a review of current processes for HAB monitoring and managing recreational HAB advisories, final recommendations from the U.S. Environmental Protection Agency (EPA) on protecting human health risks from incidental ingestion while recreating in freshwaters, data collected from Virginia HAB investigations with paired cell counts and toxin assays, and budget and staff efficiencies. This approach is supported by both VDH and DEQ agency secretaries.
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5/21/25  12:58 pm
Commenter: Denise Parroco

Proposed HAB Advisory Protocol
 

We have been homeowners at Lake Anna since 2016, and since that time have noted increases in the HAB in the lake.  We have personally encountered the cancellation of guest rentals out of fear and concern about the matter, and are aware of illnesses caused as a result of HAB.  I am concerned that the proposed protocol in "Guidance for Cyanobacteria Bloom Recreational Advisory Management", which eliminates cell counts as a primary trigger, could shift the protocol towards a more reactive approach.  This could potentially delay public notification and increase the risk of exposure to harmful cyanotoxins, especially during the early stages of bloom development when cell densities can be high even before toxin levels spike. This protocol does not provide enough advance warning regarding HAB to ensure the public safety of both residents and guests.  Cell counts provide valuable information and are early indicators of potential risks.  HAB is an ongoing issue that must be addressed on multiple fronts including, visual observation, toxin testing and cell counts.  Please keep this important matter a priority to ensure continued mitigation funding.  

Thank you.

 

 

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