Individuals on mains water usually don’t get much visible sediment (compared to individuals relying on tank water, for example); however, ultra-fine particles (i.e., particles that are smaller than 100 micron, the width of a human hair) can clog up carbon filters much quicker than anticipated and reduce water pressure. The issue of elevated sediment is especially prevalent in areas with known water quality issues or an influx of sediment; for example, due to public works, flooding, and drought, which are all common causes of elevated total suspended solids levels in mains water. So, whilst carbon filters do block sediment and it is possible to run a dual carbon system, consider whether a triple filter system with a sediment pre-filter and dual carbon set-up is more suitable.

Dual Carbon
Dual carbon will give the best result for reducing the maximum amount of chemicals on a whole house scale on mains water. The combination of filters we most commonly recommend is the maximum chemical reduction combination, which consists of:

Filter 1: 5 Micron sediment filter
Filter 2: 20 Micron low pressure drop coconut carbon – reduces chlorine without compromising on water pressure
Filter 3: Your choice of carbon block:
0.5 Micron chloramine reduction coconut carbon – composed of catalytic carbon, which has exceptional adsorption abilities (and can help to reduce chloramine, unlike standard activated carbon, which requires a longer contact time to reduce this chemical)
0.5 Micron lead (heavy metals) reduction coconut carbon – if you don’t get chloramine in your water source, consider this cartridge for the added benefit of reduced lead and other heavy metals