
Yesterday afternoon, Moscow Mills officials issued a precautionary boil water advisory for the entire municipal water system. Residents were advised to boil tap water for at least three minutes before using it for drinking, cooking, brushing teeth, preparing food, or washing dishes. The advisory will remain in effect until tests confirm the water is safe.
The advisory was reported Wednesday by First Alert 4, which notes that the notice applies to all customers served by the Moscow Mills water system and lists the precautions residents are expected to follow. The station reports that the city is the source of the advisory.
What residents should do
During a boil order, public health guidance is to stick with boiled or bottled water for anything that might end up in your mouth. That includes drinking, food preparation and oral hygiene. The Missouri Department of Natural Resources notes that boiling water for three to five minutes will kill most microbes and recommends boiled or bottled water for infants, immunocompromised people and others at higher risk. Let boiled water cool before using it. If bottled water is used, the agency says to follow package instructions for infants and young children.
Rules for restaurants and daycares
Food service operators and child care centers may need to hit pause on some kitchen routines or switch to an approved alternate potable water supply until the order is lifted. The St. Louis Department of Health advises options such as using pre-washed, packaged produce, turning off water lines to beverage dispensers and steering clear of ice made from tap water during the advisory.
How long will the order last?
According to the city notice reported by First Alert 4, the advisory will remain in effect "until testing confirms the water is safe." State procedures typically require bacteriological samples after pressure issues are resolved, and those analyses often return results within about 24 hours, though timing can vary by system. The Missouri Department of Natural Resources provides additional detail on how testing and boil orders work.
Local context and resources
Moscow Mills' public water system serves a relatively small community. Utility data indicate the Moscow Mills PWS serves roughly 4,800 people and draws from groundwater sources, according to TapWaterData. Residents with questions can contact the Moscow Mills utility office for updates and follow state and local channels for official lift notices.
What to expect when it’s lifted
After the boil water advisory is lifted, residents are typically advised to discard ice and beverages made with tap water during the advisory, run faucets until the water is clear, and sanitize dishware or run the dishwasher on a full cycle. Residents should monitor official city channels and the Missouri Department of Natural Resources’ boil order list for updates and post-advisory instructions.









