I met with a customer today who was concerned about a persistent foul odor in their home's water supply. After investigating, I determined the issue was likely caused by bacteria growth in the water heater tank. I recommended installing a whole-house water filtration and purification system to effectively remove any contaminants and eliminate the unpleasant smell. I will return next week to complete the installation of the new Aquasana filter system, which will provide the customer with clean, fresh-smelling water throughout their home.