Studies show that over 40% of Keurig owners have attempted to clean their water reservoirs in the dishwasher, despite manufacturer warnings against this practice. You’ll find that while tossing your Keurig tank in the dishwasher might seem like a convenient solution, it could lead to costly damage or even void your warranty entirely. Before you consider this risky shortcut, you’ll want to understand the proper cleaning methods that can extend your coffee maker’s life while keeping your morning brew safe and delicious.
The Official Keurig Guidelines for Water Tank Cleaning

When it comes to cleaning your Keurig water reservoir, the manufacturer provides specific guidelines to maintain peak performance and safety. According to Keurig’s official water reservoir care instructions, you should never place the tank in the dishwasher.
Instead, follow these approved cleaning steps:
- Hand wash with mild dish soap and warm water
- Rinse thoroughly to remove all soap residue
- Wipe the exterior with a soft, damp cloth
- Air dry completely before reattaching
“Regular maintenance using our recommended cleaning methods guarantees ideal brewing performance and extends the life of your machine,” states Keurig’s product care guide. You’ll want to clean your reservoir weekly to prevent mineral buildup and maintain water freshness. For deeper cleaning, Keurig recommends using their descaling solution every 3-6 months, depending on your water hardness.
Understanding Your Keurig Reservoir Components

A thorough understanding of your Keurig water reservoir’s key components will help you properly maintain and troubleshoot your coffee maker. Your reservoir consists of several essential parts:
- Main Tank: Made from BPA-free, clear plastic that allows you to monitor water levels
- Valve Assembly: Located at the base, controlling water flow into the brewing system
- Fill Line Markers: Indicating minimum and maximum water capacity
- Filter Housing: Optional component for models supporting water filtration
“The reservoir materials are specifically designed to withstand regular cleaning and daily use,” explains coffee equipment specialist Mark Thompson. Understanding these components helps determine proper cleaning frequency, which should typically occur every 3-6 months depending on usage. You’ll want to inspect the valve assembly monthly for mineral buildup and guarantee the fill lines remain clearly visible.
Safe Methods for Cleaning Your Water Reservoir

Three proven methods exist for safely cleaning your Keurig water reservoir, each providing thorough sanitization without risking damage to the components. “Regular cleaning helps prevent calcium deposits and bacteria growth while extending your machine’s lifespan,” notes appliance maintenance expert Sarah Chen.
Method 1: Hand wash with warm soapy water every 1-2 weeks, using gentle dish soap and a soft cloth.
Method 2: Create a vinegar solution (1:1 ratio with water), soak for 30 minutes, then rinse thoroughly.
Method 3: Use Keurig’s descaling solution monthly, following reservoir materials guidelines for best results.
“The cleaning frequency depends on your water type and usage patterns,” explains Chen. “Hard water users should clean weekly, while soft water users can extend to bi-weekly maintenance.”
Risks of Dishwashing Your Keurig Tank
Despite popular assumptions, placing your Keurig water reservoir in the dishwasher poses significant risks to both the tank and your coffee maker’s functionality. “The intense heat and harsh detergents can warp the plastic, compromise watertight seals, and even create micro-cracks that lead to leaks,” explains appliance repair specialist Mark Rodriguez.
Dishwasher damage isn’t always visible right away, but plastic degradation occurs with each wash cycle. You’ll likely notice these issues within 2-3 dishwasher cycles:
- Cloudy or distorted plastic
- Loose-fitting reservoir
- Water leakage around seals
- Difficulty removing or inserting tank
- Irregular water flow
“Even if your dishwasher has a ‘gentle’ cycle, temperatures above 130°F can permanently alter the reservoir’s structural integrity,” warns Rodriguez. These changes may void your Keurig’s warranty and require costly replacements.
Step-by-Step Manual Cleaning Process
Properly cleaning your Keurig water reservoir requires just a few basic supplies and about 10 minutes of hands-on time. “The key to maintaining your reservoir’s longevity is gentle, regular cleaning with the right products,” says Rodriguez.
Follow these steps for ideal reservoir hygiene:
- Remove the reservoir and discard any remaining water
- Mix 1 cup of white vinegar with 2 cups of warm water
- Wipe the inside with a soft cloth dipped in the solution
- Use a small brush to clean hard-to-reach corners
- Rinse thoroughly with clean water 3 times
- Let air dry completely before reattaching
“Manual cleaning should be done weekly to prevent mineral buildup and bacteria growth,” notes Rodriguez. For stubborn stains, let the vinegar solution sit for 30 minutes before wiping.
Maintenance Tips for Long-Term Reservoir Care
While regular cleaning is essential, implementing proper maintenance habits will greatly extend your Keurig reservoir’s lifespan and performance. “Daily maintenance makes a huge difference in preventing mineral deposits and ensuring clean-tasting beverages,” explains Rodriguez, who recommends emptying the reservoir nightly and refilling it with fresh water each morning.
To maximize reservoir longevity, follow these maintenance practices:
- Use filtered water instead of tap water to reduce mineral buildup
- Wipe down exterior surfaces weekly with a damp microfiber cloth
- Check rubber seals monthly for wear or damage
- Maintain a regular cleaning frequency of deep cleaning every 3-4 months
- Store the reservoir in a dry, room-temperature location when not in use
- Replace the water filter cartridge every 60 days or 60 tank refills
- Avoid using hot water in the reservoir, as it can damage the plastic
Frequently Asked Questions
Can I Use Vinegar to Clean the Water Reservoir if It’s Cloudy?
You can use vinegar’s cleaning benefits to remove cloudiness from your water reservoir. Fill it with equal parts vinegar and water, let it sit, then rinse thoroughly with clean water.
How Often Should I Replace My Keurig Water Reservoir?
Check your reservoir every 6 months for damage, cracks, or cloudiness. You’ll need to replace it if it’s leaking, discolored, or has lingering smells, regardless of its age.
Why Does My Reservoir Leak After Washing It?
Your reservoir’s leaking could be due to improper reservoir maintenance, including damage to seals during washing. For leak prevention, hand-wash gently and check that all seals are properly seated after cleaning.
Can I Store the Water Reservoir in the Refrigerator?
Don’t store your Keurig reservoir in the refrigerator. Cold water temperature can cause condensation and potential mold growth. If you’re concerned about storage duration, keep it room temperature and clean.
Is It Normal for the Reservoir to Have a Slight Odor?
Like a stagnant pond, your reservoir can develop unwanted smells. You’ll want to tackle reservoir maintenance regularly with vinegar solutions or descaling products for effective odor removal and fresh-tasting coffee.