With BRITA, every tap becomes a source of fresh tasting water that never runs out and is an alternative to bottled mineral water. Innovative 4-stage filtration with natural activated carbon from coconut shells & ion exchanger pearls: filters trace impurities such as certain herbicides, pesticides and pharmaceuticals & reduces taste-impairing chlorine and metals like lead & copper. The digital indicator counts down the time of cartridge usage and flashes after 4 weeks (150L) to remind you on the filter exchange.