Coldstream Ceramic Water Filter – Sentry Filter for Countertop and Undercounter Systems (CF115W)


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Replacement Sentry Filter, 2.1″, 9.5″, CO, ¼” BSP SM, COE, CS, T

Out of stock


This ceramic water filter is suitable for use in all the Coldstream Undercounter and Countertop systems and is also suitable for your existing 10” water filtration system. Capacity 3,000L

The Coldstream Sentry water filter is made using our unique, specially formulated ceramic material, giving protection against waterborne bacteria and removing particles and microplastics from your water. The filtering process allows the essential salts and electrolytes to remain, leaving great tasting water that’s healthy and safe, straight from your tap.


  • Healthy salts and electrolytes remain in the water
  • Removal of microplastics
  • Removal of particles
  • Maximum microbial protection
  • No electricity required

Additional information

Weight 0.29 kg
Dimensions 29.5 × 7 × 7 cm

Coldstream Filters and Purifiers Remove






Heavy Metals

Pesticides & Herbicides


but essential salts and electrolytes are maintained

Providing Clean, Safe Drinking Water

We make the very highest standard of drinking water filtration systems and purifiers, capable of providing the cleanest, safest drinking water straight from the tap.

Coldstream filters and purifiers are made at our state-of-the-art UK manufacturing facility using our unique ceramic injection moulding technology. Our business is environmentally powered by energy generated from wind power and solar panels.

We remove pollution, we don’t create it.