You need a water softening system.
White rings around faucet on granite.
I get that they do not sit directly on the granite but soapy water certainly does get onto the granite particularly around the soap bottle and sponge.
Scrub the granite sink with the scrubbing pad.
And your hard water may be contributing as well.
You can also use a single edge razor blade to gently scrape away the residue or a safe on stone pad to scrub the area softly before rinsing and drying.
Hard water stains around the faucet.
Rinse the granite sink thoroughly with hot water.
Maybe they used plummer s putty at your faucet connections.
The ugly white or yellowish rings around the faucet base aren t unusual.
There was a thread here a few weeks months ago about a similar sounding situation.
Dampen a nonabrasive scrubbing pad with water and apply 2 or 3 drops of mild dish detergent.
Hard water can create a calcium buildup which is also called limescale or lime deposits.
For this kind of stain use a specially formulated granite cleaning product like granite gold daily cleaner and scrub with a soft bristled brush then rinse and dry with a soft cloth.
When hard water sits on a granite surface and dries it leaves a visible mineral deposit that often creates white rings especially around faucets.
It had to do with using plummer s putty to seal faucets at stone level.
For really stubborn stains try using a poultice or extractor.
A water filter may not be sufficient to deal with hard water.
It was deemed not a good idea as a plummer s putty ingredient tends to bleed through granite and leave the type rings you describe.