Best 3-stage shower filters

Top pick: PHILIPS 3-Stage Shower Water Filter — it's the one that's genuinely built as a three-stage unit, with a compact body that fits a standard ½" shower arm and targets chlorine and impurities. Best balance of real filtration and a well-known brand.

Who the others suit:

• Aquabliss SF500 — if you want more filtration media and a tool-free install; a step up in capacity.
• SF220 Daily Essential — the simpler, cheaper Aquabliss route if you just want chlorine reduction.
• Bright Showers Universal — if you want a brass fitting and a basic carbon filter on a tight budget.
• Bangcool handheld — if you'd rather have a filtered handheld head with spare cartridges than an inline filter.

Skip the "12-stage"/"15-stage" listings if you specifically want three stages — they're multi-media cartridges, not 3-stage units.