Your Keurig Maintenance Schedule: Weekly Parts Wash to Biannual Descaling

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The water tank holds cold liquid indefinitely, making it vulnerable to stagnant water scale and bacterial accumulation. Never put the reservoir or its lid in a high-heat dishwasher; commercial dishwashers warp the thin acrylic housing and ruin the rubber base valves.

Hand-wash the tank once a week using warm, mild dish detergent and a soft sponge. Skip rough scrubbing pads, which leave tiny micro-abrasions along clear plastic walls that give bacteria and mold spores a foothold. Rinse the valve on the bottom of the reservoir under running water to clear loose grains of dust or carbon grit.

Replace the small charcoal water filter cartridge clipped inside the base bracket every 60 days or after 60 tank refills. Soak the replacement cartridge in cold tap water for 5 to 10 minutes before installation, then rinse it under a cold stream for thirty seconds. This saturates the activated carbon, stops loose black dust from slipping into the boiler lines, and pulls out trace chlorine before it alters the flavor profile of the beans.