
Cleaning the plastic reservoir of a Keurig is essential for maintaining the quality and taste of your coffee, as well as ensuring the longevity of your machine. Over time, mineral deposits, mold, and bacteria can accumulate in the reservoir, affecting both the flavor of your brew and the health of your appliance. To effectively clean it, start by unplugging the Keurig and disassembling the reservoir. Wash it with warm, soapy water, using a soft brush or sponge to remove any visible residue. For deeper cleaning, consider using a mixture of white vinegar and water to dissolve mineral buildup, followed by a thorough rinse to eliminate any lingering vinegar taste. Regular maintenance, such as monthly descaling and weekly washing, will keep your Keurig’s reservoir in optimal condition.
| Characteristics | Values |
|---|---|
| Cleaning Frequency | Monthly or every 3-6 months, depending on usage. |
| Materials Needed | White vinegar, water, soft cloth, mild dish soap, toothbrush (optional). |
| Steps | 1. Disassemble the reservoir. 2. Rinse with warm water. 3. Fill with equal parts vinegar and water. 4. Let sit for 30-60 minutes. 5. Scrub gently with a soft cloth or toothbrush. 6. Rinse thoroughly with water. 7. Dry completely before reassembling. |
| Vinegar Solution Ratio | 1:1 (equal parts white vinegar and water). |
| Soaking Time | 30-60 minutes. |
| Alternative Cleaning Agents | Baking soda paste, Keurig descaling solution. |
| Avoid | Abrasive scrubbers, harsh chemicals, bleach. |
| Drying Method | Air dry or pat dry with a clean cloth. |
| Reassembly | Ensure all parts are dry before reassembling. |
| Maintenance Tips | Regularly refill with fresh water, avoid leaving water stagnant. |
| Safety Precautions | Unplug the Keurig before cleaning, avoid submerging electrical components. |
| Environmental Considerations | Dispose of vinegar solution responsibly, avoid chemical cleaners. |
| Compatibility | Suitable for all Keurig models with plastic reservoirs. |
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What You'll Learn
- Remove and Disassemble: Safely detach the reservoir from the Keurig and take it apart for cleaning
- Wash with Soap: Use warm, soapy water to scrub away residue and stains from the plastic
- Descale Solution: Apply a descaling solution to remove mineral buildup and hard water stains
- Dry Thoroughly: Air-dry all parts completely to prevent mold and ensure no moisture remains
- Reassemble and Test: Put the reservoir back together and test it to ensure proper function

Remove and Disassemble: Safely detach the reservoir from the Keurig and take it apart for cleaning
Before beginning the cleaning process, ensure your Keurig is turned off and unplugged for safety. The first step in cleaning the plastic reservoir is to remove it from the machine. Locate the reservoir, which is typically at the side or back of the Keurig, depending on the model. Most Keurig reservoirs are designed for easy removal; simply lift the reservoir straight up or press a release button (if available) to detach it from the base. Be gentle but firm to avoid any damage. Once removed, place the reservoir on a clean, dry surface, preferably near the sink for easy access to water and cleaning supplies.
After detaching the reservoir, inspect it for any removable parts. Many Keurig reservoirs have a lid that can be separated from the main body. Check if the lid is attached by a hinge or if it can be completely removed. If it’s removable, lift it off carefully. Some models may also have a water filter assembly inside the reservoir, which can be taken out for thorough cleaning. Gently pull out any filters or additional components, keeping track of their positions for reassembly later.
Next, disassemble the reservoir further if possible. Some reservoirs have a base or a bottom cap that can be unscrewed or detached. Turn the reservoir upside down and examine the base for any screws, tabs, or twist-off mechanisms. If there’s a twist-off base, rotate it counterclockwise until it comes loose. For reservoirs with tabs, gently press or squeeze the sides to release the base. If screws are present, use a screwdriver to remove them carefully, ensuring you keep the screws in a safe place.
Once all removable parts are separated, lay them out in an organized manner. This includes the main reservoir body, lid, filter assembly, and any other components. Organizing the parts will make reassembly easier and ensure nothing is misplaced. If your reservoir has a water level indicator or markings, take note of their position to avoid confusion later. Now that the reservoir is fully disassembled, you’re ready to proceed with the cleaning process, ensuring every part is thoroughly sanitized.
Finally, before cleaning, inspect each part for any signs of damage, such as cracks or leaks. If any component is damaged, consider replacing it to maintain the efficiency of your Keurig. Disassembling the reservoir not only allows for a deeper clean but also helps you identify potential issues early. With the reservoir and its parts safely detached and laid out, you can now focus on cleaning each piece individually, ensuring your Keurig continues to function optimally.
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Wash with Soap: Use warm, soapy water to scrub away residue and stains from the plastic
Cleaning the plastic reservoir of your Keurig with warm, soapy water is one of the most effective ways to remove residue, stains, and buildup. Start by unplugging the machine and allowing it to cool completely to ensure safety. Carefully remove the reservoir from the Keurig, as this will make it easier to clean thoroughly. Fill your sink or a large basin with warm water, adding a few drops of mild dish soap to create a soapy solution. Dish soap is ideal because it is gentle yet effective at breaking down oils and stains without damaging the plastic.
Submerge the reservoir in the warm, soapy water and let it soak for 10–15 minutes. This soaking period helps loosen any stubborn residue, such as coffee oils or mineral deposits, that may have accumulated over time. After soaking, use a soft-bristled brush or a non-abrasive sponge to scrub the interior and exterior of the reservoir. Pay special attention to areas where stains or buildup are visible, such as the bottom and sides. Avoid using abrasive materials like steel wool, as they can scratch the plastic and create surfaces where bacteria can grow.
For hard-to-reach areas, such as the spout or crevices, use a small brush or a cotton swab dipped in the soapy water to ensure thorough cleaning. Gently scrub these areas to dislodge any hidden residue. Once you’ve scrubbed the reservoir, rinse it thoroughly with clean, warm water to remove all soap traces. Soap residue left behind can affect the taste of your coffee, so ensure the reservoir is completely rinsed.
After rinsing, shake off excess water and allow the reservoir to air dry completely before reattaching it to the Keurig. If you’re in a hurry, you can pat it dry with a clean, lint-free cloth, but air drying is best to prevent any fibers from clinging to the plastic. Once dry, reattach the reservoir to the machine, ensuring it is securely in place. This method not only keeps your Keurig’s reservoir clean but also helps maintain the quality and taste of your brewed coffee.
For regular maintenance, consider washing the reservoir with warm, soapy water at least once a month, or more frequently if you use your Keurig daily. This routine cleaning prevents the buildup of bacteria, mold, and mineral deposits, ensuring your machine remains in good working condition. By incorporating this simple cleaning step into your Keurig care routine, you’ll extend the life of your machine and enjoy better-tasting coffee every time you brew.
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Descale Solution: Apply a descaling solution to remove mineral buildup and hard water stains
To effectively clean the plastic reservoir of your Keurig using a descaling solution, start by selecting a suitable descaling product. You can choose between commercial descaling solutions specifically designed for coffee makers or opt for a homemade solution, such as a mixture of equal parts white vinegar and water. Ensure the solution is safe for use with plastic components to avoid damage. Once you have your descaling solution ready, pour it into the empty water reservoir of your Keurig. Fill the reservoir to its maximum capacity to ensure thorough coverage of all internal surfaces.
Next, place a large mug or container on the drip tray to catch the liquid during the descaling process. Turn on your Keurig and initiate the brewing cycle without inserting a K-Cup. Allow the machine to run the descaling solution through its system, which will help dissolve mineral buildup and hard water stains from both the reservoir and the internal pipes. Repeat this process until the reservoir is empty, discarding the solution in the mug after each cycle. This step is crucial for ensuring that all traces of minerals and stains are removed.
After running the descaling solution through the machine, rinse the reservoir thoroughly to eliminate any residual descaler. Fill the reservoir with fresh water and run multiple brewing cycles without a K-Cup, discarding the water each time. This rinsing process ensures that no descaling solution remains in the system, which could affect the taste of your coffee. Repeat the rinse cycle at least 3-4 times or until the water runs clear and free of any vinegar or descaler odor.
For stubborn mineral deposits or hard water stains in the reservoir, consider using a soft brush or sponge to manually scrub the affected areas after descaling. Dip the brush or sponge in the descaling solution and gently clean the interior surfaces of the reservoir, paying attention to corners and crevices where buildup tends to accumulate. Avoid using abrasive tools or harsh chemicals that could scratch or damage the plastic. Once cleaned, rinse the reservoir again with fresh water to remove any loosened debris or remaining descaling solution.
Finally, reassemble your Keurig and perform one last rinse cycle with fresh water to ensure the machine is ready for use. Regularly descaling your Keurig, typically every 3-6 months depending on usage and water hardness, will help maintain the cleanliness of the plastic reservoir and extend the life of your machine. By following these steps and using a descaling solution effectively, you can keep your Keurig’s reservoir free from mineral buildup and hard water stains, ensuring optimal performance and better-tasting coffee.
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Dry Thoroughly: Air-dry all parts completely to prevent mold and ensure no moisture remains
After cleaning the plastic reservoir of your Keurig, it's crucial to dry all parts thoroughly to prevent mold and ensure no moisture remains. Moisture left behind can create a breeding ground for mold and mildew, which can affect the taste of your coffee and even pose health risks. To avoid this, start by shaking off any excess water from the reservoir and its components. Use a clean, dry cloth or towel to gently pat down the surfaces, absorbing as much moisture as possible. Be thorough and pay attention to crevices and corners where water might accumulate.
Once you've removed the majority of the moisture, it's time to let the parts air-dry completely. Place the reservoir, lid, and any other removable components on a clean, dry surface, preferably in a well-ventilated area. Avoid using heated drying methods, such as a dishwasher or hairdryer, as high temperatures can warp or damage the plastic. Instead, allow the parts to air-dry naturally, which may take several hours or even overnight, depending on the humidity and airflow in your environment. Ensure that all surfaces are fully exposed to the air, and consider using a drying rack or clean towel to elevate the parts and promote airflow.
While air-drying, periodically check the reservoir and its components for any remaining moisture. If you notice water droplets or damp spots, use a clean, dry cloth to gently absorb the moisture and allow the area to continue air-drying. Be particularly vigilant around seals, gaskets, and other areas where water might become trapped. These areas are prone to mold growth, so it's essential to ensure they are completely dry before reassembling your Keurig. If necessary, use a soft-bristled brush or cotton swab to gently remove any residual moisture from tight spaces.
To expedite the drying process and ensure thoroughness, consider using a clean, dry microfiber cloth to gently buff the surfaces of the reservoir and its components. This can help remove any remaining moisture and leave the plastic with a streak-free finish. Additionally, if you live in a humid environment, you may want to use a dehumidifier or open windows to promote airflow and reduce moisture levels in the air. By taking these extra precautions, you can minimize the risk of mold growth and ensure that your Keurig's plastic reservoir is completely dry and ready for use.
Before reassembling your Keurig, double-check that all parts are entirely dry. Inspect the reservoir, lid, and other components for any signs of moisture, and if necessary, allow them to air-dry for a bit longer. Remember, even small amounts of residual moisture can lead to mold growth over time, so it's better to err on the side of caution. Once you're confident that everything is dry, reassemble your Keurig according to the manufacturer's instructions, and enjoy your freshly cleaned and maintained coffee maker. By prioritizing thorough drying, you'll help extend the life of your Keurig and ensure that every cup of coffee tastes its best.
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Reassemble and Test: Put the reservoir back together and test it to ensure proper function
Once you’ve thoroughly cleaned the plastic reservoir of your Keurig, the next step is to reassemble it properly to ensure it functions as intended. Begin by carefully placing the cleaned reservoir back into its designated slot on the machine. Ensure it aligns perfectly with the base and fits snugly into the grooves. Double-check that the water inlet and outlet ports are properly aligned with the machine’s connections to avoid leaks. Gently press the reservoir down until it clicks into place, confirming it is securely attached. Avoid forcing it, as this could damage the components.
After reassembling the reservoir, fill it with fresh, clean water to test its functionality. Turn on the Keurig and allow it to heat up as usual. Once the machine is ready, run a test brew without a K-Cup to flush out any residual cleaning solution or water that may have been left behind during the cleaning process. Discard the water from this first brew and observe the machine for any signs of leaks or malfunctions. This step is crucial to ensure the reservoir is working correctly and that no cleaning agents remain in the system.
Next, perform a second test brew with a K-Cup to ensure the machine is brewing at the correct temperature and water flow rate. Pay attention to the speed and consistency of the brew cycle. If the water flows too slowly or unevenly, it may indicate a blockage or improper reassembly. If everything appears normal, proceed with a full brew and check the taste of the coffee to ensure there are no lingering cleaning solution flavors. This step confirms that the reservoir and the entire system are functioning properly.
Finally, inspect the reservoir and surrounding areas one last time for any signs of water leakage or misalignment. Wipe down the exterior of the reservoir and the machine to remove any spills or residue from the testing process. Regularly reassembling and testing the reservoir after cleaning not only ensures optimal performance but also extends the lifespan of your Keurig. By following these steps, you can confidently use your machine knowing it is clean, safe, and fully functional.
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Frequently asked questions
It’s recommended to clean the plastic reservoir of your Keurig every 3-6 months, depending on usage, to prevent mineral buildup and ensure fresh-tasting coffee.
The best way is to use a mixture of equal parts white vinegar and water. Fill the reservoir, let it sit for 30 minutes, then rinse thoroughly with fresh water to remove any residue.
No, bleach is not recommended as it can leave harmful residues. Stick to white vinegar and water or a mild dish soap solution for safe and effective cleaning.

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