Water · WA · South West WA

Bunbury (Aqwest supply)

Supplied by Aqwest · Harvey Dam + Collie River + bores

Water chemistry

Soft-Moderate

Hardness (mg/L CaCO₃)

90–110

German degrees (°dH)

5–6.2

TDS (ppm)

130–200

Typical pH

7.3-8.0

Aqwest confirmed ~100 mg/L - much better than Perth metro.

Filter choice scales with weekly coffee volume. Pick the tier that matches your usage.

Single machine, household use

BWT BESTMAX PREMIUM V (FS23P00A00) or Brita C150 (102828)

Up to ~10 kg coffee/week

BWT BESTMAX PREMIUM M (FS24P00A00) or Brita C300 (102826)

10–30 kg coffee/week

BWT BESTMAX PREMIUM XL (FS28P00A00) or Claris Ultra 500-M (4339-81)

30+ kg coffee/week, multi-group

BWT BESTMAX PREMIUM 2XL (FS30P00A00) or Claris Ultra 1000-L (4339-82)

RO system: Not required
Filter head required: BWT Besthead (FS00Y90A00) for BWT; Brita Head (1013637) G3/8" BSP for Brita; Claris Head (4339-90) 3/8" BSP for Claris
Flow meter: BWT WM1000 for commercial; Everpure Claris Flowmeter (4339-30) for Claris systems
Test kit: BWT TK550 Carbonate Hardness Test Kit (TK550)