I received a call from a homeowner who reported that their under-sink water filter was producing a strange taste and smell in their drinking water. Upon inspection, I found that the carbon filter was expired and needed to be replaced. I also found that the faucet was corroded and needed to be replaced. After replacing the filter and faucet, I tested the system to ensure that it was producing clean and tasty drinking water. The homeowner was pleased with my work and glad to have a better-tasting water supply.