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Plumbing in O'Fallon: winter lows around 22°F mean exposed pipes can freeze and burst; 23% of homes in St. Charles County were built before 1980, when galvanized and older pipes were common; flash floods here can back up drains.
In St. Charles County, July highs average about 88°F and January lows about 22°F, with roughly 42 inches of rain a year.
Over the last 10 years the National Weather Service recorded hailstorms, damaging thunderstorm winds and flash floods in St. Charles County, with hail up to 3 inches across. After a storm, a quick roof and gutter check catches damage before it turns into a leak.
The typical home in St. Charles County was built around 1995, about 31 years ago, and 23% were built before 1980.
St. Charles County has had 17 federal disaster declarations in the last 25 years, most often for severe storms; the latest was Severe Storms And Flooding (2022).
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Insulate pipes in crawl spaces and outside walls, drip faucets on the coldest nights, and know where your main shut-off is.
Galvanized steel and polybutylene pipes are past their life in most homes — low pressure, rusty water or repeated leaks are the signs.
Yes if water is spreading or near electrics — turn off the main and choose Emergency when you book; we call you at the first opening.
Dardenne Prairie · Lake St. Louis · Cottleville · St. Paul · Josephville · Weldon Spring Heights · St. Peters · Weldon Spring