Water · WA · Greater Perth

Perth Southern Suburbs (desalination blend)

Supplied by Water Corporation · Kwinana Desalination + groundwater

VERY-HARD-RO-ESSENTIAL-TEST-ON-SITE

Desalination blending raises TDS further. RO essential.

Water chemistry

Very Hard

Hardness (mg/L CaCO₃)

150–250

German degrees (°dH)

8.4–14

TDS (ppm)

400–800

Typical pH

7.5-8.5

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

Single machine, household use

Everpure LVRO-75E (EV997500) + 4CM (EV962780)

Up to ~10 kg coffee/week

Everpure LVRO-75E (EV997500) + 4CM (EV962780) + BWT TDS Pen

10–30 kg coffee/week

Everpure MRS-350 RO (EV997036) + 4CM (EV962780)

30+ kg coffee/week, multi-group

Everpure MRS-600 RO (EV997052) + 4CM (EV962780)

RO system: MANDATORY - Everpure LVRO-75E or MRS-350/600 + 4CM (EV962780)
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)