- ✓No plumbing needed. Benchtop filters connect via a diverter on the tap aerator. Gravity filters need nothing at all. Countertop RO clips to the tap. All are portable — take them when you leave.
- !For Sydney, Brisbane, Adelaide and GWW Melbourne (chloramine cities): ensure your benchtop or pitcher filter uses catalytic carbon with an NSF 42 chloramine claim. Standard carbon filters provide limited benefit in these cities.
- →Adelaide renters: countertop RO is strongly recommended. Adelaide's 480 mg/L TDS and high sodium make the taste improvement from RO the most noticeable of any Australian city — and a countertop unit needs no installation.
- →Shower filters also need no plumber — screw onto the existing shower arm, take with you when you move. For chloramine cities, only Vitamin C shower filters have documented effectiveness.
- →If you want a permanent under-sink filter, ask your landlord in writing — many agree when the request is framed around licensed installation, WaterMark fittings and no structural changes.
The renter constraint — what you can and can't install
In most Australian states, tenants need written landlord permission to modify plumbing. Under-sink and whole-home filters require a plumbing connection — they are permanent modifications. Many landlords approve these when asked, but it is not guaranteed and you cannot rely on taking the system with you when you move.
The practical solution is to focus on portable, non-plumbed filtration that you own outright, can set up in minutes, and can take with you when you leave. For the majority of renters, the goal is better drinking and cooking water — not whole-home treatment — and that goal is achievable without touching a single pipe.
Filter types that need no plumber
Benchtop / countertop filter
Connects to the kitchen tap via a diverter valve that screws onto the existing aerator — no modification to the tap or pipework. You direct the flow to the filter when you want filtered water, back to the tap normally otherwise. Takes 5 minutes to fit and 5 minutes to remove when you move out. Cost: $80–$250 for the unit. Cartridges: $40–$100 per year.
Available in carbon block (taste and chloramine) and multi-stage (carbon + ceramic). For chloramine cities (Sydney, Brisbane, Adelaide, GWW Melbourne), ensure the unit specifies catalytic carbon and carries an NSF 42 chloramine claim.
Benchtop RO system
A countertop reverse osmosis system connects to the tap via a diverter or clips onto the aerator — no under-sink plumbing required. Produces pure RO water into a jug or glass. Slower than under-sink RO but fully portable. Cost: $300–$600. Ideal for renters who want fluoride removal, Adelaide renters (highest TDS of any capital), or formula-fed infant households. Waste water goes down the kitchen drain via a small tube.
Gravity filter (Berkey-type)
A two-chamber stainless steel vessel — fill the top with water from any source and gravity draws it through ceramic and carbon elements into the bottom chamber. No connection to plumbing at all. Sits on the bench or a small stand. Capacity 8–22 litres. Ideal for households filtering large volumes, or for water sources beyond town water. Black Berkey-type elements remove bacteria, protozoa, VOCs and heavy metals to tested levels.
Cost: $300–$600 for a quality unit. Element replacement: every 3,000–5,000 litres depending on the element. A common choice for renters in houses or share accommodation where a benchtop filter is inconvenient.
Pitcher / jug filter (Brita-type)
The most accessible entry point — available in supermarkets, completely portable. Sits in the fridge. Carbon-based filtration improves taste and reduces free chlorine. Cost: $30–$80 for the jug. Cartridges: $40–$80 per year for 2–3 replacements.
The significant limitation: standard pitcher filters have limited effectiveness against chloramine. For Sydney, Brisbane, Adelaide and GWW Melbourne renters, taste improvement will be modest unless the pitcher specifically uses catalytic carbon — check the NSF 42 certification and confirm it includes a chloramine claim.
For renters in Sydney or Brisbane: check whether your pitcher filter is NSF 42 certified specifically for chloramine, not just free chlorine. A Brita Standard cartridge, for example, is rated for free chlorine reduction — Sydney and Brisbane use chloramine. The Brita Maxtra+ Pro (with activated carbon and ion exchange) has better chloramine performance but still not as effective as a dedicated catalytic carbon benchtop unit.
Best option by city
| City | Main concern | Best portable option |
|---|---|---|
| Melbourne | Occasional chlorine taste | Basic pitcher filter or benchtop carbon. Melbourne has excellent water — any basic portable filter is sufficient. |
| Sydney | Chloramine taste, fluoride (1.0 mg/L) | Benchtop catalytic carbon for taste. Countertop RO if fluoride reduction is important (formula feeding, personal preference). |
| Brisbane | Chloramine, seasonal earthy taste (MIB/Geosmin) | Benchtop catalytic carbon handles chloramine. Gravity filter or countertop RO for seasonal taste events. |
| Adelaide | Chloramine, high TDS (480 mg/L), sodium | Countertop RO is strongly recommended. Adelaide has the highest TDS of any capital — the difference in taste quality with RO is the most noticeable of any city. |
| Perth (renting) | Free chlorine, varies by zone hardness | Benchtop carbon sufficient for chlorine and taste. Hard water (scale) requires whole-home TAC — not addressable with portable filtration alone. |
Shower filters — worth it for renters?
A shower filter screws directly onto the existing shower arm — no plumber, no landlord permission needed, completely portable. If you move, unscrew and take it with you. For renters who shower frequently and are sensitive to chlorine or chloramine, the investment is low ($40–$150) and the setup is trivial.
The same caveat applies as for benchtop filters: in chloramine cities (Sydney, Brisbane, Adelaide, GWW Melbourne), only Vitamin C (ascorbic acid) shower filters have documented effectiveness against chloramine. KDF and standard carbon shower filters address free chlorine only — largely irrelevant in these cities.
Getting a landlord to agree to an under-sink filter
If you want a permanent under-sink installation and your landlord hasn't agreed, a well-framed request often succeeds. Points that help:
- Licensed plumber installation — provides documentation and professional standard workmanship
- The system will be left in place at end of tenancy (adds value to the property) or can be removed cleanly
- No structural changes — a plumbing connection to an existing line under the sink
- WaterMark certified fittings (required for any licensed plumber installation)
Put the request in writing and get approval in writing. In a competitive rental market, many landlords agree to reasonable requests from reliable long-term tenants.
For taste and chloramine (Sydney, Brisbane, Adelaide): benchtop catalytic carbon filter, $80–$250, no plumber, takes the connection off the tap. For fluoride and TDS (Adelaide especially): countertop RO, $300–$600.
For renters who want the simplest possible option: check whether your city uses chloramine, then buy a certified pitcher or benchtop filter that specifically addresses that disinfectant. See our suburb lookup to understand your specific water.