Mix one part distilled white vinegar and one part clean water in a mop bucket or similar container.
Soak paper towels in vinegar solution until thoroughly saturated.
Protect any vulnerable areas of granite, slab or marble by covering them with cloth rags. Prolonged contact with acidic cleaners can damage stone counter surfaces.
Remove saturated paper towels from vinegar solution and apply them to faucet, pressing to ensure contact in heavily soiled areas.
Wrap all soiled areas of the faucet with paper towels and allow them to stand for one hour. Check paper towels periodically, and re-apply vinegar if dry.
Remove the paper towels from the faucet, and scrub with an old toothbrush.
Wipe hard water residue away with a clean rag, rinse well with water and buff dry with a cotton dishtowel or cleaning rag.
Clean aerators or other removable faucet parts by soaking in vinegar/water solution for one hour. Rinse clean.