The City of Bloomington’s most recent water quality testing has shown a notable increase in taste and odor compounds. For the past month, levels had been steady in the 4-5 nanograms per liter (ng/L) range but have recently risen to 9-10ng/L.
The rise appears to be linked to ongoing dry conditions. A significant lack of rainfall has dropped Lake Bloomington’s water level by more than a foot, creating conditions that may be contributing to the increase in taste and odor compounds.
In response, City staff promptly activated temporary powdered activated carbon (PAC) treatment, which is expected to reduce levels within the week. The City has also started supplementing Lake Bloomington’s supply by blending in water from Evergreen Lake, which is currently testing lower for these compounds.
“The lack of rainfall this summer has clearly impacted our water supply, and our staff is taking the necessary steps to keep our water quality high,” said Mayor Dan Brady. “We appreciate the community’s patience as these treatments and adjustments take effect.”
The City will continue to provide updates.
