Watermark  ·  The Range

Four systems. One philosophy.
Built around the home, the estate, and the road.

Every Watermark filter shares the same four-stage architecture, the same NSF-equivalent rated media, and the same biological brief. Choose by household size, water volume, and ambition.

Sort · Recommended
A note on ordering.  Each Watermark system is configured to your postcode and installed by us. To begin, send your postcode via the survey form below — we'll come back with a tailored quote, an installation window, and (if you'd like one) a glass of water.
Modern timber kitchen with considered lighting
Whole House · Most Popular

Whole House 3+1

Three primary stages plus a polishing fourth. Designed for the average four-bedroom British home with a single mains feed.

£599·00 →
Filtered water poured slowly into a glass
Under-Sink

Better than Bottled
Undersink 4-part

Compact four-stage filtration where it matters most — at the kitchen tap. A complete bottled-water replacement.

£399·00 →
White wildflowers under open sky
Under-Sink · 2-part

Undersink 2-part

Two-stage option for tenants and smaller kitchens. Sediment plus chlorine and chloramine removal. Filter swaps annually.

£249·00 →
Marble bathroom with brass fixtures
High Flow

Whole House 25 L/PM

For larger families and homes with multiple simultaneous draws. Higher flow rates, identical four-stage protection, swap-out servicing once a year.

£899·00 →
Sunlight refracting through clear water
Estate · Made-to-Order

Grand Designs

Bespoke whole-estate systems built to spec. Larger volumes, stainless housings, integrated UV polish. As featured on Channel 4.

£9,999·00 →
Ultra Showers — chlorine-free festival showers
Event · Hire

Ultra Showers

Single-bay 4-metre filtered shower for festivals, retreats and boutique camps. 99.99999% sterile at the showerhead.

£POA →
The Portable Well at a UK festival
Event · Hire

The Portable Well

A flight-cased, 400 L/h chlorine-free standpipe-fed filtration rig. As wholesome as nature intended — on a muddy field, in a marquee, at a wedding, anywhere a tap can run.

£POA →
Send your postcode for a tailored quote
Annual servicing

One visit a year.
Done.

Every Watermark system comes with annual swap-out servicing. We arrive, we rotate the filters, we test the chemistry — and you go back to not thinking about water for another twelve months.

  • 2-part system£125 swap-out
  • 4-part system£160 swap-out
  • Whole House 3+1£199
  • Whole House 25 L/PM£249
  • Grand Designs£399