Some Wentzville residents say their tap water has started to taste and smell strange, and city officials admit they have noticed the complaints too. The city says it is now working with the regional utility that supplies much of Wentzville’s water, while stressing that routine testing still shows the water is safe to drink.
City leaders say they are stepping up monitoring and will keep the public updated as crews track down the source of the off flavors. In the meantime, they are urging residents to report any persistent or widespread issues so sampling crews know exactly where to look.
In a notice posted Friday on the city’s official Facebook page, the City of Wentzville said it is in communication with Public Water Supply District No. 2 and that “drinking water remains safe to drink,” describing the statement as an interim advisory while additional checks are completed. According to the notice, officials will share more information as it becomes available and have included guidance for residents who continue to notice unusual tastes or smells.
Where Wentzville's water comes from
Wentzville’s drinking water system blends local groundwater wells with purchased wholesale water. The city buys from St. Charles County Public Water Supply District No. 2, which in turn purchases water from the St. Louis City system, according to the city’s Consumer Confidence Report filed with the Missouri Department of Natural Resources. Wentzville's 2025 Consumer Confidence Report also records a monitoring entry for chlorine for PWSD #2 in June 2025, information the report includes to help customers understand supply-chain conditions. That supplier chain helps explain why a taste or odor issue in one system might be noticed in neighboring communities.
What taste and odor complaints usually mean
State regulators and water experts say most taste and odor events are annoying rather than an immediate health threat. Common culprits include algal or organic compounds in source water, short-term changes in disinfectant levels, or minerals reacting with household plumbing.
Per guidance from the Missouri Department of Natural Resources, sharp chemical smells such as turpentine or solvents are uncommon and should be reported to your water supplier, while earthy or musty tastes are more often linked to naturally occurring organic material. A technical review in Water Biology and Security describes how seasonal shifts in source water and adjustments in treatment can trigger these taste-and-odor episodes and outlines the steps utilities take to dial them back.
How to respond and who to contact
If your tap water tastes or smells off for more than a day, officials suggest running several minutes of cold water from an unused faucet and cleaning or replacing any point-of-use filters. If the issue sticks around, they recommend using bottled water for sensitive uses and reporting the problem to the city so crews can log and investigate it.
The city lists its utilities contact numbers for service and billing on the Wentzville Utilities page, and customers can reach Wentzville Utilities at (636) 639-2155 or (636) 327-5101 during business hours. For household steps such as flushing and filtering, municipal water guides often recommend letting cold taps run for a few minutes and using carbon filtration where appropriate. A household guide from DC Water offers practical tips for handling minor taste and odor concerns at the tap.
The city says it will continue to monitor testing results and share new information as soon as it has it. Residents with ongoing concerns are urged to follow official City of Wentzville channels for updates, with the latest advisory posted by the City of Wentzville on its Facebook page.
