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How long can you store water with bleach?

Author

James Craig

Published Jan 17, 2026

The Ministry of Health advises water treated with bleach can be stored for 12 months. If you're storing tap water from a reticulated supply without adding bleach, replace it at least every 6 months. Store the bottles away from direct sunlight in a cool dark place.

How long will bleach treated water last?

Chemical treatments (including household bleach or iodine) can be used every 6 months to a year to keep the water potable. However, the best practice is to drain water storage, clean containers, and replace them with new potable water about every two years or sooner.

Should I add bleach to water for long-term storage?

Preparing Water for Storage

Water stored in thoroughly clean plastic or glass containers can be chemically disinfected for long-term storage by treating each gallon with 4 to 5 drops of unscented liquid chlorine bleach (Clorox or Purex type bleaches, containing 4% to 6% sodium hypochlorite).

Can you store water in bleach bottles?

Thoroughly wash plastic soda bottles or milk jugs with warm, soapy water. Use containers with screw-on tops. Sanitize the container by putting one teaspoon of household liquid bleach (5.25% sodium hypochlorite or higher) in one quart of water. Pour this solution in the container and leave it there for two minutes.

How do you store water long term?

Tips for storing safe water in a container after cleaning and sanitizing:

  1. Label container as “drinking water” and include storage date.
  2. Replace stored water every six months.
  3. Keep stored water in a place with a cool temperature (50–70°F).
  4. Do not store water containers in direct sunlight.
24 related questions found

How do you use Clorox to purify water?

Don't pour purified water into contaminated containers. Sanitize water jugs first. 2 drops of Regular Clorox Bleach per quart of water 8 drops of Regular Clorox Bleach per gallon of water 1/2 teaspoon Regular Clorox Bleach per five gallons of water If water is cloudy, double the recommended dosages of Clorox Bleach.

How long will water last in plastic bottles?

To extend the shelf life of bottled water, store it in a cool, dark area. As a general guideline, bottled water will be good for approximately 2 years or more, and bottled tap water will be good to drink for approximately 6 months.

How long can you store water in 5 gallon jugs?

As stated, the shelf life of 5-gallon bottles is up to two years. The water will not go bad at that point. Yet, it may develop a stale taste. The jug itself lasts indefinitely as it is made from food-grade plastic or glass.

Can you store tap water long term?

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).

How do you store bleach water?

Add 1/4 teaspoon (16 drops) of bleach per gallon of water if the water is cloudy and 1/8 teaspoon (8 drops) if the water is clear.

How much bleach do I add to 50 gallon water for storage?

Example of a practical application. To disinfect your 50 gallon hot water heater requires 1.5 cups of bleach left in the tank for two hours or 3/4 cup of bleach left overnight. For a 30 gallon tank, cut the amount in half. Keep in mind that a bit too much usually doesn't hurt anything.

How long can you safely store water?

If stored properly, unopened, store-bought bottled water should stay good indefinitely, even if the bottle has an expiration date. If you bottled the water yourself, replace it every 6 months. Replace plastic containers when the plastic becomes cloudy, discolored, scratched, or scuffed.

How long can bottled water be stored at room temperature?

Bottled water lasts 1-2 years when stored at room temperature. It is not required by the FDA to label water with an expiration date but generally, water will stay fresh within the year if kept out of sunlight.

What can be used to store water?

You'll need a safe container in which to store it. The general guideline is to use food-grade plastic bottles. You can also use glass bottles so long as they haven't stored non-food items. Stainless steel is another option, but you won't be able to treat your stored water with chlorine, as it corrodes steel.

How long can I store water in a 55 gallon drum?

Water Storage Barrel - 55 Gallon

Water is the #1 emergency supply to have. This barrel can store up to 55 gallons of emergency water for 5 years (when used with water preserver concentrate).

Can you drink distilled water?

Distilled water is safe to drink. But you'll probably find it flat or bland. That's because it's stripped of important minerals like calcium, sodium, and magnesium that give tap water its familiar flavor.

Can you store water in the garage?

But Cheryl Watson, a professor in the biochemistry and molecular biology department at the University of Texas Medical Branch in Galveston, advised people not to store bottled water in places that have a significant amount of heat, like a garage or a car parked outside.

Can you get sick from drinking old water?

The water left overnight or for a long period of time in an open glass or container is home to numerous bacterias and is not safe for drinking. You never know how much dust, debris, and other small microscopic particles might have passed into that glass. Water left in a bottle for a long time is not safe to drink.

Is it safe to drink bottled water left in a hot car?

In general, no one recommends storing your water in a hot car or exposed to extreme heat or direct sunlight. But a bottle of water left in the car for a day or two is extremely unlikely to do any harm at all.

How long does spring water keep?

If you are storing bottled water for emergency purposes, it is recommended to keep spring water stored for no more than one year!

Does boiling water remove chlorine?

Does Boiling Water Remove Chlorine? Yes, boiling water for 15 minutes is one way to release all the chlorine from tap water. At room temperature, chlorine gas weighs less than air and will naturally evaporate off without boiling. Heating up water to a boil will speed up the chlorine removal process.

How can you naturally purify water?

Here are some of the most effective water purification methods that have stood the test of time:

  1. Boiling. The simplest method to purify water is to boil it for a good time. ...
  2. Water Purifier. ...
  3. Reverse Osmosis. ...
  4. Water Chlorination. ...
  5. Distillation. ...
  6. Iodine Addition. ...
  7. Solar Purification. ...
  8. Clay Vessel Filtration.

How much Clorox do I store in water?

A general rule of thumb to shock chlorinate and disinfect a storage tank is to mix non-scented NSF-approved household bleach (5.25% chlorine) in the reservoir at the ratio of 1 gallon of bleach for every 1,000 gallons of water (i.e., 1 quart for every 250 gallons of water).