Point Loma's extensive inventory of galvanized steel and early copper plumbing makes water testing especially revealing — and especially important. Galvanized steel pipes corrode internally over decades, shedding rust, iron, and sediment directly into the water flowing through them. Early copper pipes with lead-based solder (standard until 1986) can leach both lead and copper at levels that exceed EPA action limits, particularly in first-draw water that has sat in contact with pipe walls overnight.Homewerx performs dual-point testing on Point Loma homes: a baseline sample at the water main, and first-draw plus flushed samples at the kitchen tap. The difference between the two points reveals exactly what your home's aging plumbing is contributing to your water. For galvanized homes, we typically find elevated iron, sediment, and manganese. For copper homes with lead solder, first-draw lead levels can be significantly higher than flushed samples — indicating that standing water in contact with solder joints is picking up lead. These findings directly inform decisions about repiping priority, filtration needs, and whether immediate health precautions (like running water before drinking) are warranted.