Water filters for rented homes
Renting narrows the options usefully. Anything that drills a worktop, cuts into the rising main or needs a drain connection is out unless your landlord agrees in writing — and most will not for a tenancy of a year or two.
What is left is more than you might think, and covers the complaints most people actually have.
Fit freely — no permission needed
A filter jug. No installation at all, no plumbing, and it goes with you. The cheapest way to improve drinking water taste and the right answer for a short tenancy.
A shower filter. Screws between the shower arm and the head, unscrews in a minute, leaves nothing behind. Genuinely useful if chlorine bothers your skin.
A tap-mounted filter. Clamps onto the tap spout. Effective on taste, though they fit only standard threaded spouts and look like what they are.
A countertop filter. Sits on the worktop with a diverter on the tap. More capacity than a jug, fully reversible, takes up space.
Ask first — but often agreed
An under-sink filter feeding the existing tap. No new hole, no worktop alteration, and the whole thing can be removed leaving only the isolation valve connection. Many landlords will agree to this, particularly if you are paying for it and offering to leave it behind.
An inline fridge filter. If the property has a plumbed fridge, this is a five-minute swap. Ask, but it is rarely contentious.
A scale inhibitor at the boiler. In a hard water area this protects the landlord's boiler, which makes the conversation easier than most. Frame it that way.
Get any agreement in writing, and keep it. Tenancies outlast the memories of the people who agreed things.
Avoid entirely in a rented property
Anything drilling the worktop. A separate filter tap needs a hole, and the hole is permanent. This is a deposit dispute waiting to happen.
Water softeners. Rising main, drain connection, substantial space. Not a tenant installation under any circumstances.
Three-way taps. Replacing the landlord's tap is an alteration to their fixture, whatever your intentions about putting the old one back.
Whole-house filtration. Same reasoning as a softener.
What to buy for what problem
Water tastes of chlorine: a jug, a tap-mounted filter, or an under-sink filter if your landlord agrees.
Skin dries out after showering: a shower filter.
Kettle furs up constantly: nothing you can fit will fix this. Softening is the only real answer and it is not a tenant's decision. Descale the kettle and accept it, or raise scale protection with the landlord as a boiler-protection question.
Fridge water tastes stale: replace the fridge's own cartridge. It is a consumable and it is usually the tenant's to change.