NYC faces a growing infrastructure crisis underground. The city has approximately 7,500 miles of sewer lines and 7,000 miles of water mains, many dating back over 100 years. NYC DEP handles approximately 400 water main breaks per year. Aging pipes lead to increased maintenance costs, water loss, sewer backups, and potential health hazards from lead pipes. The city has invested billions in infrastructure upgrades, but the scale of the problem is enormous. Property owners should be proactive about assessing and replacing their private sewer and water service lines, which are the property owner responsibility from the building to the city main.