"Obliviously it was state-of-the-art in the 1920s when it was installed, but we don't use cast-iron anymore," Arian Collins, City of San Diego spokesperson, told 10News. "Even though it lasted a long time we find that the PVC lasts a lot longer."
Collins said the city is working to replace all of the cast-iron plumbing running through the city's water lines — about 70 miles worth of piping to go. He added the city hopes to have that all replaced or under construction within the next five to six years.
Thursday's break was the second in the area, though on an unrelated line, in just a year. Some residents affected this week were also wrapped up in lawsuits with the city over 2017's break.