www.phcppros.com/articles/698-maryland-waterworks-crew-unearth-century-old-wooden-water-pipe

Maryland waterworks crew unearth century-old wooden water pipe
August 1, 2015
Contractors for the Washington Suburban Sanitary Commission (WSSC) digging in the Maryland suburbs to install a new water line found a 6-inch wooden water pipe, buried around 1915.
The pipe, which is made out of of slats of wood, is wrapped in reinforcing steel wire.
More details here.