Cyanobacteria Mitigation Program

HAB at Lake Anna

Kick the HAB

Help LACA Kick the HAB at Lake Anna by making a tax-deductible donation to the Kick the HAB fundraising effort. If we do not successfully raise the necessary funds, we will have to cut back the mitigation program.
Collected: $135,909.01
Goal: $110,000.00

Program Overview 

LACA is excited to announce the “Kick the HAB” @ Lake Anna campaign. The goal of the campaign is to pilot a Cyanobacteria monitoring and mitigation program during the upcoming 2022 recreational season.  “Kick the HAB” is a fund-raising campaign focused on generating the funding needed to execute our Cyanobacteria Mitigation Program (CMP) pilot/demonstration in 2022.  The ultimate goal of LACA's CMP, if a major effort is approved in future years, is to control cyanobacteria population densities in the upper lake region to minimize or eliminate Virginia Department of Health (VDH) recreational “no-swim” advisories on Lake Anna. 

LACA has conducted water quality monitoring at Lake Anna in partnership with the Virginia Department of Environmental Quality (DEQ) since 2002.  In addition, for the past three years we executed a more frequent and intensive cyanobacteria monitoring project focused on the problematic cyanobacteria issues found in the upper lake region tributaries. In addition, LACA volunteers spent the past four years investigating and researching various approaches, methodologies, and emerging technologies aimed at Harmful Algae Bloom (HAB) mitigation, remediation, and prevention.  This investigation/research convinced us that the underlying causes of the HABs at Lake Anna are complex, deep-rooted, and difficult to precisely identify and that the solutions we decide to pursue need to be multi-faceted, and they will be expensive and will take a lot of effort over a long timeframe.

The data and information we generated from our research and analysis provides several potential paths forward to fight the cyanobacteria issues we have experienced over the past five years. Our action plan for Cyanobacteria Mitigation, Remediation and Prevention includes an extensive list of both short range and long range prospective actions.  Mitigation actions we have evaluated tend to be more cost-effective and targeted for more immediate impacts.  The most promising of these ideas with the greatest potential near-term impact on HABs at Lake Anna and safest environmental outcomes are the mitigation technology we will evaluate during the 2022 recreational season.  

LACA developed a Cyanobacteria Mitigation Program Pilot/Demonstration for 2022 that we are currently executing.  The original program plan is outlined in a Program Overview that was approved for execution by the LACA Board of Directors.  LACA’s program managers updated the program plan each week based on data obtained from the application events conducted as part of the program.  

AOI-Pamunkey Monitoring Stations

AOI-Goldmine Monitoring Stations

AOI-Duckinhole Monitoring Stations

AOI-Beverly Monitoring Stations

Updated Program Schedule

  • Application events are planned to be 2-day activities
  • LACA has conducted four application events to date
  • Data from Application Events 1-3 informed LACA's decision to modify our plan for Application Events 4 and 5.  Please see the Application Event #4 webpage for information on this decision and the actions taken by LACA.

Application Event




June 16-17



July 14-15



July 18-19



August 11


Lake Guard Oxy Product Information

Lake Guard®️ Oxy is manufactured by BlueGreen Water Technologies.  It is part of BlueGreen’s innovative line of Lake Guard®️ remedies designed to effectively mitigate/remediate algae and cyanobacterial blooms (blue-green algae) in lakes and oceans of any size within 24-48 hours or less. The formulations are based on tried-and-tested algaecides/cyanobacteriocides that are verified safe for both humans and the environment. The addition of a patented biodegradable coat simplifies administration, making the formulation buoyant and transportable by wind and current to affected regions of water bodies without human intervention. These formulations, used in conjunction with BlueGreen’s extensive and advanced data science capabilities, hold the key to solving a host of pervasive worldwide environmental problems.

The Lake Guard®️ Oxy formulation is NSF / ANSI / CAN 60 Certified, US EPA approved, and approved by the Virginia Department of Agriculture and Consumer Services (VDACS).  The product's effectiveness against Cyanobacteria is so high that only small quantities are needed to make a massive impact.

The active ingredient in Lake Guard®️ Oxy is sodium percarbonate (a chemical that has long been used safely as an algaecide/cyanobacteriocide).  This ingredient is fully approved for safety.  Upon contact with water, Lake Guard®️ Oxy releases hydrogen peroxide which immediately causes oxidative stress in any surrounding cyanobacterial populations, prompting an auto-catalytic cell-death cascade.  The by-products of this highly effective remedy — water and oxygen — are completely harmless to the surrounding environment.

LACA conducted extensive research over the past eight months on the use of hydrogen-peroxide products in freshwater lakes, rivers and reservoirs.  This research led us to BlueGreen Water Technologies, and we initiated dialogue with them in December 2021 concerning the use of their Lake Guard Oxy product at Lake Anna.  LACA reviewed a number of peer reviewed research and academic papers on hydrogen-peroxide products and attended multiple seminars (via Zoom and other web conferencing platforms) on Cyanobacteria mitigation and remediation approaches.  The most economical and lowest risk approach that we identified is the use of hydrogen-peroxide to control the growth of Cyanobacteria in Lake Anna.  Based on the research and science-based approach, LACA selected the BlueGreen Water Technologies product Lake Guard Oxy for our Cyanobacteria Mitigation Program - 2022.  Please see our current Lake Guard Oxy Product Overview and our Library of Research Papers and Reports for additional details.

The Lake Guard Oxy Product was applied by SOLitude Lake Management, a licensed, certified applicator in Virginia.  The authorization to discharge this product in Lake Anna is granted under the General Permit issued under Virginia Administrative Code, 9VAC25-800-30.  SOLitude is the company that was contracted by Louisa County and the Lake Anna Advisory Committee (LAAC) to conduct an Algal Bloom Assessment and Recommendations for Part of Lake Anna in 2021-2022.  A copy of the LAAC Final Report is included in the Library, and you can click here to download a copy

BlueGreen Water Technologies website

Safety Data Sheet (SDS) for Lake Guard Oxy

EPA Labeling Instructions for Lake Guard Oxy

National Science Foundation (NSF) Listing for BlueGreen Water Technologies

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