Can water sitting in a Brita go bad?

Author: Dr. Kacey Schowalter DVM  |  Last update: Sunday, March 29, 2026

If you do not change your water filter after 40 gallons of Brita or every 2 months, bacteria will grow in your filter or get mixed into your water.

How long can water sit in a Brita pitcher?

Store your BRITA filtered water in a cool place, such as the fridge. Also, protect your BRITA product from direct sunlight to avoid algae and consume the filtered water within one day.

Is it okay to leave water in Brita?

  • It is never wise to leave a pitcher of filtered water (Brita, et al) on countertop, unrefrigerated.
  • The water in the pitcher will be devoid of chlorine and as such will be readily subject to the growth of bacteria, mold and other organic growth.

How long can you let filtered water sit?

Potentially, filtered water could be stored for a few weeks, as long as it's refrigerated and kept sealed in a glass bottle. If kept at room temperature, then filtered water is best drunk within a few hours.

How long can water sit out in a pitcher?

First off, as your water sits, especially if it's uncovered for eight or more hours, the carbon dioxide in the air starts to mix with it. This chemical reaction will result in the formation of weak acid, reducing the pH level of your water.

The PROBLEM With Brita Filters

How long can water sit in a jug before it goes bad?

Although properly stored public-supply water should have an indefinite shelf life, replace it every 6 to 12 months for best taste. If the water you are storing comes from a private well, spring, or other untested source, purify it before storage to kill pathogens (see below).

Can I drink water that sat out overnight?

On its own, a clean glass of water should be perfectly fine to drink from if it's only been left out overnight. However, it can taste a bit off because exposure to carbon dioxide in the air can cause its pH to lower, resulting in a flatter flavor.

How long can water sit before bacteria?

According to Krogh, even an open glass of water that has been standing out for a number of days is safe to drink, provided it hasn't been contaminated with bacteria from dirty hands or saliva. It may taste flat and odd, but it is still safe to consume.

Can a Brita filter get moldy?

Because Brita pitchers are constantly exposed to moisture, they can grow mold and mildew. Our handy guide will show you how to get rid of mold growth in your water filter, and we'll provide tips on keeping mold out of your drinking water too!

How long does it take for filtered water to go bad?

It's important to note that warm temperatures can encourage the growth of bacteria, while exposure to sunlight can stimulate algal growth in the water. Refrigerated: Filtered water can typically be stored in a clean, covered container in the refrigerator for up to 3-5 days.

Can Brita go bad?

Brita® Water Faucet Filters:

Do unused filters expire? The shelf life of an unused Brita® filter is indefinite as long as its pouch is intact and sealed.

When should I throw out my Brita filter?

How often should I change my Brita Stream® Filter? Replace your Brita Stream® Filter every 40 gallons, or about every 2 months.

Do I need to clean the inside of my Brita?

Nothing tastes better than clean, cold, filtered water. But if you use a Brita pitcher to filter your water at home, it's important to stay on top of cleaning your pitcher to prevent mold and mildew. In addition to changing the filter, pitchers need to be washed with soap and water.

How long can you leave water in a water filter?

Ideally, you should drink filtered water within a few days of filtering it. However, it can be stored for up to six months. Just be sure to keep it in a clean, covered container in the fridge.

What is the lifespan of a Brita pitcher?

This is the most common Brita filter, usually identified as the “white ones.” They're used in pitchers, faucets, and dispensers, having the capacity to remove foul odor and bad taste. Regarding its efficacy period, you should change this filter every two months or after using 40 gallons of water.

How often should you wash a Brita water jug?

Experts recommend washing your water pitcher at least every one to two weeks to prevent bacteria, fungi, and mold from growing. If you don't keep your water pitch clean, bacteria can build up in it and could even make you sick. To properly clean your water pitcher, use warm water and soap.

How long can filtered water sit out?

If you leave unrefrigerated filtered water open in a room temperature environment, then it is safe to drink for up to 12 hours. Then carbon dioxide from the air eventually starts to mix in with the water, changing its taste. Also, other microscopic elements, such as dust and debris, can be exposed to your cup of water.

Can mold in water make you sick?

If you accidentally drink water with mold in it, you might feel sick to your stomach, get stomach cramps or have diarrhea. Allergic reactions. Some people are allergic to mold. Even a small amount of mold can trigger allergic reactions like sneezing, coughing, itching or a runny nose.

Can you drink 5 day old water?

When you leave the glass of water uncovered for about 12 hours, carbon dioxide in the air starts to mix with it. This reduces the pH level of the water and gives it an off taste. But even then this water is safe to drink.

How long can you keep water in a pitcher?

Second, we recommend not letting the same filtered water sit in your pitcher for more than 4 or 5 days. If you don't have room in your refrigerator, do your best to keep your pitcher out of the sun and away from any heat source (since heat contributes to algae growth).

Can stagnant water make you sick?

Stagnant water isn't just a minor annoyance; it can harm your health and property! Whether it accumulates in puddles, ponds, or neglected containers, the water provides an ideal breeding ground for harmful microorganisms, such as mosquitoes and waterborne pathogens, which can spread diseases.

How long can water sit before it goes bad?

Drinking water that is thoroughly disinfected can be stored indefinitely in capped plastic or glass containers that water will not rust, as metal containers may. Because the disinfectant that was in the water when you stored it will slowly go away, replacing the water every six months is recommended. 2.

What should I do if I drank dirty water?

5 Steps to Take if You Consume Contaminated Water
  1. Understand the Source of Contamination. The first step to take if you drink contaminated water is to determine the source of contamination. ...
  2. Contact Local Authorities. ...
  3. Seek Medical Attention. ...
  4. Communicate Transparently. ...
  5. Trust Your Bottleless Water Cooler.

Can you drink 20 year old bottled water?

The FDA has determined that commercially bottled water doesn't have a shelf life, since it comes from sanitary facilities subject to regular inspections and contains no additives to hasten spoilage.

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