The Purely S1 replacement cartridge — black fibre filter body capped in white at both ends, studio shot on dark blue
Close-up of the S1 replacement cartridge's white end cap and centre water channel
Shower filtration

S1 Replacement Cartridge

4.8 · 240 reviews
$80CAD

The Purely S1 replacement cartridge is designed to refresh your shower filtration and keep your S1 performing at its best. Built to reduce chlorine, and common shower water contaminants for cleaner-feeling water, softer skin, and healthier-looking hair.

Select your cartridge

Simple Replacement

Quick 5-minute, tool-free cartridge swap with no tools or plumber needed.

Protection + Results

Protects your hair and skin from over 80 contaminants — reducing the chlorine that dulls your hair, dries your skin, and fades your colour.

Up to 1 Year

Up to 45,000 L of filtered shower water before your next cartridge change.

Free Canada-wide shipping
30-day satisfaction guarantee
Up to 1 Year of Protection

Order summary

SystemS1 Replacement Cartridge
Total
$80

Final taxes calculated at checkout. Ships within 1–3 weeks.

Backed by our 30-day Pure Promise