Mark 4 Plumbing specializes in water service line installation and repair for homes and businesses throughout Philadelphia. Our experienced team, led by Mark Leuzzi Sr., ensures your water lines are installed using high-quality materials to deliver clean, pressurized water from the main to your building. Whether you're upgrading an aging system or dealing with a water line emergency, we provide timely, efficient service backed by over 45 years of skill. We also help homeowners navigate local permits and inspections to keep your water service project compliant and stress-free.