Water Leak Repair In Apartments, National CityDetailsClient Residential ClientCompleted July 2026Timeframe Same Day ServiceLocation National City, San DiegoCategoryPlumbingShare this page... Back To GalleryRepaired pinhole leak in hot water main line for an apartment complex in National City. Used Copper type L; which is of higher quality to prevent leaks in the future on our repair. The leak was caused by an old copper pipe. Project Photos