I’ll add to this: do some research for your specific utilities authority and what they put in to treat the water. For example, mine is well water but is treated with chlorine and flouride, so I found one online matching my need:

SITAFL 17-Stage Shower Filter For Hard Water, Gift Box Suit, With 4 Filter Cartridge Replacement, Remove Chlorine, Fluoride, and Salt, Moisturize Hair, Nails, and Skin, Fixed All Standard Showerheads https://www.amazon.com/dp/B08D6FS71F/ref=cm_sw_r_cp_api_glt_fabc_AH56VXRVSFMYCBTWT1Q6?_encoding=UTF8&psc=1