As freezing temperatures in the Philadelphia region are expected to persist through Sunday, water utilities are bracing for a surge in frozen pipes, leaks and water main breaks. Well, the same thing happens in your plumbing,” said Kinya Kirby, a water customer care manager for the Philadelphia Water Department. The last time Philadelphia faced freezing temperatures for more than seven days was in January 2018, when the water department responded to 366 water main breaks. Sunday’s snowstorm could compound the issue, the water department said, as heaps of snow remain unplowed. The water department is urging ratepayers to clear their curb boxes of snow and ice so workers can respond quickly.