Cabarrus Today

Water levels at Lake Fisher, a key raw water source for the City of Concord, have dropped significantly, resulting in reduced water clarity in some areas. The Concord Water Resources Department is actively working to address the discoloration in the water supply. Despite its appearance, officials assure residents that the water remains safe for consumption and does not require boiling.

Lake Fisher's water level has decreased by approximately 7.5 feet below normal. This decline has led to an increase in air being drawn into the city's water intake structure, which has heightened turbidity—an indicator of cloudiness—in the treated water supply.

To adapt to these changes, the Water Resources Department has adjusted the city's intake valves to align with Lake Fisher's fluctuating levels. This involves closing valves above the current water line and opening those below it.

As lake levels fall, sediment from the lake bottom, containing manganese—a mineral found naturally in rocks and soil—enters the water intake system. While manganese is essential for health in small amounts and is present in many foods, higher concentrations due to low lake levels have affected the city's ability to completely remove it during treatment.

The department conducts daily tests for manganese and works continuously to enhance removal processes. Efforts are underway to flush discolored water from the system; however, ongoing low levels at Lake Fisher necessitate further measures to improve clarity quickly. To alleviate pressure on Lake Fisher, additional water is being sourced from Lake Howell and Albemarle.

This change requires altering flow directions within pipes, potentially causing temporary discoloration. The Water Resources Department ensures that all safety standards are maintained despite visual issues with the water.