• Columbia, MO experienced widespread water discoloration due to mineral disturbances during water treatment plant upgrades.
• The City of Columbia assures residents that the discolored water, caused by excess calcium bicarbonate, is safe to drink.
• The city expects the discoloration to flush through the system within 24 hours and is conducting water main flushing.

On May 7, 2025, residents of Columbia, Missouri, reported discolored water coming from their faucets. The City of Columbia issued a press release acknowledging the "widespread water discoloration" and assuring residents that the water is safe to drink. The discoloration is attributed to excess minerals, specifically calcium bicarbonate, disturbed during work on the main transmission line as part of the McBaine Water Treatment Plant upgrade. The city anticipates the issue resolving within 24 hours.

• What: Widespread water discoloration in Columbia, Missouri, due to excess minerals released during upgrades to the McBaine Water Treatment Plant.
• Who: City of Columbia, Columbia residents, contractors working on the McBaine Water Treatment Plant.
• When: May 7, 2025, with discoloration expected to clear within 24 hours. Water main flushing from 7:30 a.m.-3:30 p.m. each day for about two weeks beginning on May 5, 2025.
• Where: Columbia, Missouri, specifically affecting residents connected to the water system. Boil advisory issued for Oak Street, south of West Worley Street.

The City of Columbia's prompt response to the water discoloration issue with a public announcement is crucial in reassuring residents about the safety of their drinking water. The explanation of the cause, attributing it to excess minerals disturbed during the treatment plant upgrade, helps to alleviate concerns. The ongoing water main flushing indicates a proactive approach to managing water quality. The issuance of a boil advisory for a specific area suggests localized concerns that require further attention.

Columbia, Missouri, experienced discolored water due to mineral disturbances during treatment plant upgrades. The city assures residents the water is safe and anticipates the discoloration resolving quickly. Water main flushing is underway, addressing the issue and improving water quality.