Catlett’s public water is about the simplest system in the county. FCWSA’s two village wells, 270 and 264 feet deep, pump up into the elevated tank on Old Dumfries Road, and the height of that tank is the pressure at your tap. A house on those mains has a meter, no pump in the yard and no pressure tank in the basement. FCWSA itself calls the Catlett system fairly remote, slow to reach at times, which is why it put online monitoring on it.
The village is a small slice of the ZIP. The Census puts 138 homes in the Catlett Census place and close to 1,600 across 20119, nearly every one in Fauquier and a handful over the Prince William line. Most of those are on the roads out of town, toward Elk Run, Old Dumfries and the dairy farms the County’s plan says still operate here. Off the tower’s mains, the water at the sink comes up a well, through a submersible pump and into a tank in the house, and every piece of it is the owner’s to keep running.
The houses span a long time. Catlett grew up around a stop on the Orange and Alexandria Railroad, built through in 1852, and its historic buildings run from the 1850s into the 1950s. Across 20119, about one owner home in six predates 1960, and every home the Census counts here stands on its own lot. That mix means we meet both a century-old house whose well has outlived several pumps and a 1990s place on acreage where the tank and switch are the builder’s. The first question is which parts have been changed and when.
Then there’s Cedar Run. Its gauge near Catlett crested at 18.2 feet in July 2013 and almost 16 feet in July 2025, and at 21 feet the Route 806 bridge floods and water gets into buildings nearby. If a well head in that floodplain went under, keep the pump off until the wiring dries, then shock the well with chlorine before anyone drinks from it. Virginia Cooperative Extension says to chlorinate after any repair to a well system too, so we bring it up every time a pump comes out.