Hello Lee S,
I'm glad ot hear you are happy with your Delta faucet and I am sorry to hear you are having a issue with water spots. Here is some basic cleaning and care information:
Always blot dry any water from faucet surface. Allowing water to evaporate on the surface can lead to build up of mineral deposits. Cleaning with a damp non-abrasive sponge and buffing it dry with a clean soft cloth should help keep your product looking beautiful. To remove water spots, use warm water and a soft, damp cloth. Hard water stains and calcium build up may be removed using a 50/50 solution of white vinegar and water. Make certain that you rinse thoroughly with water afterward. Also take care to protect surfaces that may be damaged by vinegar. The white vinegar can stain porous stones like granite, limestone and marble. You can also use a cleaner called " bar keepers friend" which works very well with removing water spots.
If additional cleaning is required, all of our finishes may be cleaned with the following household cleaners: 409, Fantastic, or Windex, when used according to the manufacturers' instructions for use. Avoid using the following which can damage your finish:
Avoid industrial cleaners and abrasive cleaners, such as those used for toilet bowls, green Scotch-Brite heavy duty scrub sponges, Scrubbing Bubbles Bathroom Cleaner and Lysol Basin Tub and Tile Cleaner, Lime Away and Soft Scrub.