my brita is filtering super slow, like it takes an hour to fill the pitcher. filter is new.

Diagnosis

A Brita pitcher that takes an hour or more to filter is almost always caused by an air lock inside the filter cartridge. When a new Standard filter isn't properly pre-soaked, tiny air pockets get trapped between the carbon granules. Water can't push through those air gaps efficiently, so filtration slows to a painful drip — sometimes taking 45 minutes to over an hour for a single pitcher fill. A properly functioning Brita Standard filter should fill the lower reservoir in about 10 to 15 minutes.

Other common causes of slow filtering:

• Sediment buildup in the filter. If you have hard water or high-sediment tap water, mineral deposits can clog the filter media much faster than normal. You'll notice this more with well water or older municipal pipes.
• An expired or overused filter. Standard filters are rated for 40 gallons or about 2 months of typical use. After that, the carbon becomes saturated and the pores close up. If you've been using the same filter for 3+ months, it's done.
• Filter installed incorrectly. If the filter isn't seated properly in the reservoir tray, water may be trying to squeeze through a partially blocked channel.
• Water temperature. Cold water filters more slowly than room-temperature water. If you're filling from a very cold tap (below 40°F), expect somewhat slower filtering — though not drastically slower.

How to Fix It

Start with the most common cause — trapped air — and work down the list:

1. Remove and re-soak the filter. Take the filter out of the pitcher. Submerge it completely in a bowl of cold tap water for 15 minutes. You should see small air bubbles rising from the filter — that's the trapped air escaping. This single step fixes the problem about 80% of the time.
2. Tap the filter underwater. While it's soaking, gently tap the filter against the bottom of the bowl a few times. This dislodges stubborn air pockets deep inside the carbon bed. Don't shake it violently — you'll break the carbon into finer particles that make things worse.
3. Rinse under running water. After soaking, hold the filter under cold running tap water for 20 seconds, rotating it to flush from all angles.
4. Reseat the filter firmly. Press it back into the reservoir tray until you feel or hear a click. The filter should sit snugly with no wobble. On the Standard Everyday pitcher, align the groove on the filter with the ridge in the tray.
5. Fill and test. Fill the reservoir with cold water and time the filtration. A healthy Standard filter should process a full reservoir in 10 to 15 minutes. If it's under 20 minutes, you're fine.

If That Didn't Work

If soaking and reseating didn't improve flow rate:

• Check how long the filter has been in use. If it's been more than 2 months or 40 gallons, replace it. There's no way to restore a saturated filter — the activated carbon is physically full of the contaminants it's been absorbing.
• Assess your water hardness. If you live in an area with hard water (high calcium and magnesium), filters clog faster. You can check your water hardness on your city's annual water quality report or with a cheap test strip from any hardware store. Hard water areas may need filter changes every 4 to 6 weeks instead of every 2 months.
• Try a different filter from a new package. Manufacturing defects happen. If the filter is new and properly soaked but still drips at a glacial pace, it may have an unusually dense carbon pack. Swap in another one.
• Clean the pitcher reservoir. Remove the filter and check the tray and water channels for buildup. White or green mineral deposits can partially block the water path. Scrub with warm water and white vinegar, rinse thoroughly, then reinstall the filter.
• Consider upgrading to the Brita Longlast or Elite filter if slow filtering is a recurring issue. These use a pleated carbon block that maintains more consistent flow rates over their longer 6-month lifespan. However, note that Longlast filters are only compatible with certain Brita pitcher models — check the compatibility list on the filter box or brita.com.

Heads Up

• Never use hot water to speed up filtering. Hot water damages the carbon media and can cause the filter to release contaminants it previously captured. Always use cold tap water.
• A completely stopped filter is different from a slow filter. If zero water passes through after 30+ minutes, the filter likely has a manufacturing defect or a severe air lock. Remove it, soak for a full 30 minutes, and try again. If still nothing, replace it.
• First use is always slowest. Brand new filters almost always run slower on the first fill. By the second or third pitcher, flow rate typically improves as trapped air works its way out naturally.
• Don't overfill the reservoir. Pouring water above the max fill line doesn't create more pressure — it can actually overflow around the filter edges, bypassing filtration entirely.