No Trace Of Cryptosporidium Parasite Found In Latest Druid Lake Reservoir Tests

BALTIMORE COUNTY - The Baltimore City Department of Public Works (DPW) has confirmed that the most recent samples from the Druid Lake Reservoir showed no signs of the microscopic parasite Cryptosporidium. The results were officially presented to the DPW on October 3.

On September 28, 2023, DPW identified a minimal concentration of Cryptosporidium (0.09 Oocyst/Liter) during their routine reservoir inspection. Typically found in lakes and rivers, this microorganism can lead to gastrointestinal issues, especially for those with weakened immune systems.

Out of an abundance of caution, the Maryland Department of Health and the Maryland Department of the Environment advise people with severely weakened immune systems to continue to:

• Drink bottled water, OR
• Boil water for one minute before consuming, OR
• Filter tap water using a filter labeled to ANSI/NSF 53 or 58 standards or a filter designed to remove objects 1 micron or larger. These may be labeled “absolute 1 micron.” (i.e., not Brita-type filters)

The DPW also highlighted ongoing efforts to cover the remaining untreated water reservoirs at Druid Lake and Ashburton. The department expects these projects to be completed later this year, providing additional protection against Cryptosporidium and other potential contaminants.

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