The answer to 'lifespan of faucet' is that a well-maintained faucet can typically last 15-20 years. Faucets are designed to withstand daily use, but their lifespan can vary depending on factors like water quality, frequency of use, and proper installation and maintenance.
Proper maintenance, such as regularly cleaning and replacing washers or seals, can extend the life of a faucet. However, over time, the internal components like the cartridge, springs, and valves can wear down, leading to leaks, drips, and reduced water pressure. When these issues start to occur, it's often time to consider replacing the entire faucet assembly.