What’s the way to store distilled water?

Distilled water is water that has been boiled and condensed to remove impurities, minerals, and contaminants. It is used for a variety of purposes including drinking, cooking, automobiles, medical equipment, and scientific experiments. Properly storing distilled water is important to maintain its purity and prevent contamination. There are a few key factors to consider when storing distilled water:

Container Material

The material of the storage container is important because some materials can leach chemicals into the water over time. The best containers to store distilled water are:

– Glass – Glass is inert and will not contaminate the water. Glass jugs, bottles, and jars are ideal.
– Stainless Steel – Stainless steel is also inert and good for storing water long-term. Stainless steel tanks, barrels, and containers are commonly used.
– Food-Grade Plastic – Plastic made from food-grade polyethylene or polypropylene is acceptable. These do not contain bisphenol-A (BPA) or phthalates that can leach into water. Look for the recycle codes #2, #4 or #5.

Avoid these container materials:

– PVC plastic – Can leach phthalates into water over time.
– Other plastic containers – These may contain BPAs or other chemicals.
– Ceramic containers – Glazes and colorings may contain lead or other impurities.

Container Cleaning

Any container used should be thoroughly cleaned and rinsed before filling with distilled water. Detergents should be washed away, and containers should be sterilized with heat, chlorine bleach, or another sterilizing agent. This prevents contamination from any residues.

Container Sealing

The container needs an airtight seal to prevent airborne microbes, dust, chemicals, etc. from getting into the water. A screw-top lid is adequate for bottles and jugs. Stainless steel tanks should have a sealed lid. Ensure gaskets and seals fit tightly.

Light Exposure

Exposure to light can allow algae and bacteria to grow in distilled water over time. Store containers in a dark pantry, cabinet, or closet. Tinting plastic bottles or using opaque stainless steel can help block light.

Temperature

Storing distilled water at room temperature is ideal. Extreme heat or freezing can negatively impact the water quality and cause plastic containers to leach chemicals. Find a storage place that maintains a temperature between 60°F-80°F.

Shelf Life

Distilled water can be safely stored up to 5 years before needing to be refreshed. Mark the fill date on bottles or tanks and replace once expired. Properly stored water may last up to 10 years before chemical leaching or microbial growth causes issues with quality and taste.

Choosing a Container

When selecting a container for storing distilled water, consider these recommendations:

Container Type Volume Range Pros Cons
Glass Bottles 1 cup – 1 gallon – Inert material
– Easy to clean & sterilize
– Clear to see water level
– Heavy & easily broken
– Smaller volumes
Stainless Steel Tank 5 – 55 gallons – Durable & reusable for years
– Large volume capacity
– Opaque to block light
– More expensive
– Heavy when full
Plastic Jug 1 – 5 gallons – Lightweight
– Lower cost
– Recyclable
– May leach chemicals
– Scratches can harbor bacteria

– Glass bottles are ideal for home or drinking use given their chemical stability. Various sizes from 1 cup up to 1 gallon are available. However, glass breaks easily.

– For large volume needs, stainless steel tanks from 5 to 55 gallons are recommended. These have a longer lifespan but a higher upfront cost. Weight when full can make moving difficult.

– Food-safe plastic jugs from 1 to 5 gallons provide a balance of affordability and chemical resistance. Scratches and age can impact durability. Check recycling codes and replace old containers.

The amount of distilled water needed and desired length of storage should determine the ideal container size and material. Small batches for short-term use can use glass bottles, while large supplies benefit from reusable stainless steel tanks.

How to Clean Containers

Proper cleaning and sterilization of any container before filling with distilled water is critical. Here are step-by-step instructions:

Glass Bottles & Jars

1. Wash with hot soapy water. Use a bottle brush to scrub inside.

2. Rinse 3-5 times with clean, hot water to remove all soap residue.

3. Fill bottle with 2 tbsp of chlorine bleach and top with warm water. Let soak 5 minutes.

4. Empty bleach solution and rinse again until no bleach smell remains.

5. Let air dry fully upside down on a clean dish rack.

Stainless Steel Tanks & Barrels

1. Remove any gaskets or seals and set aside.

2. Wash with hot soapy water using a sponge or rag. Rinse thoroughly.

3. Fill tank 20% full with a sterilizing solution like food-grade chlorine or iodine.

4. Seal tank and gently rock back and forth to coat all inside surfaces.

5. Drain solution and rinse 3-5 times with clean, hot water.

6. Let air dry fully with lid removed before replacing gaskets and seals.

Plastic Jugs

1. Wash with hot soapy water. Use bottle brush to scrub inside.

2. Rinse 3-5 times with clean, hot water to remove all soap residue.

3. Fill 20% full with 1 tbsp household chlorine bleach and top with warm water. Let soak 2 minutes.

4. Empty bleach solution and rinse again until no bleach smell remains.

5. Let air dry fully upside down on a clean dish rack. Avoid drying with towel to prevent lint.

Always inspect containers for any cracks, scratches, or defects that could allow contamination. Damaged containers should be discarded and replaced.

How to Sterilize Containers

In addition to washing, containers can be sterilized using heat, chemical sterilants, or irradiation.

Heat Sterilization

– Glass bottles or jars can be sterilized by baking in an oven at 350°F for at least 10 minutes. Remove with gloves or tongs.

– Stainless steel tanks or drums can be steamed or boiled with water inside for 20-30 minutes to sterilize.

– DO NOT sterilize plastic jugs with heat as it can release toxic chemicals.

Chemical Sterilization

– A diluted bleach solution of 1 tbsp bleach to 1 gallon water can be used to sterilize containers. Soak or rinse fully before using.

– Food-grade sterilants like Star San or iodophor can be used per instructions to sanitize. Rinse thoroughly after.

– Always have good ventilation when using chemical sterilants.

UV Irradiation

– Bottles and containers can be sterilized using UV-C irradiation. Specific devices are made for this purpose. Exposure times vary based on volume.

– UV irradiation is effective at killing bacteria, viruses, and other microorganisms through damaging their DNA/RNA.

– Safety precautions are needed since UV light can damage eyes and skin. The water itself does not become radioactive.

For most home or drinking purposes, thorough washing with hot water and soap followed by an optional bleach rinse is sufficient preparation prior to filling containers with freshly distilled water.

How to Store Containers

Once containers are clean, dry, and filled with distilled water, proper storage is important. Follow these tips:

– Store in a cool, dry place around 60°F to 80°F. Avoid temperature extremes.

– Keep in a dark place like a pantry or cupboard to prevent light exposure.

– Ensure containers are securely sealed. Tighten lids, replace gaskets, and use parafilm if needed.

– Shelving should be clean. Use a waterproof barrier if needed. Keep stored off concrete floors.

– Organize by fill date and use older water first to rotate supply. Mark expiration dates.

– Glass bottles can be prone to breaking. Wrap in towels on shelves or place in plastic bins.

– Larger stainless steel barrels may need to be secured in place to prevent tipping. Use care when moving full containers.

– Keep areas ventilated. Avoid storing other chemicals nearby that could taint odor or flavor.

With the proper storage location and conditions, distilled water can retain purity and fresh taste for up to 5 years before needing to be re-distilled or replaced in containers.

Alternative Storage Methods

In addition to glass, stainless steel, and plastic containers, there are some other methods for storing distilled water:

Break-Resistant Plastic Bottles

– BPA-free polyethylene terephthalate (PETE) plastic bottles with thicker walls resist breaking if dropped. Brands like Nalgene offer these.

– Clear construction allows you to see water levels while blocking light.

– Durable for short-term storage needs up to 6 months.

Water Bricks

– Multi-gallon sealed plastic bricks of water are made for longer-term emergency storage.

– Contain 3-5 gallons each. Stackable and secure lids prevent leaks.

– Long shelf life of 5+ years. Resistant to temperature swings.

– Can develop odor/taste from plastic. Periodic refreshing recommended.

Water Storage Barrels

– High-density polyethylene (HDPE) food-safe barrels hold 20-60+ gallons.

– Sturdy construction, resealable bung caps, wide openings for cleaning.

– Compatible with pump kits for easy pouring. Protect spout from contamination.

– Heavy when full. Must be kept in place and requires spigot/spout.

– Can harbor mold if not fully dried after washing. Replace gaskets periodically.

For emergency situations where no power or water supply may be available for long periods, alternatives like water bricks offer viable bulk options for stockpiling reserves of distilled water. But for everyday usage, glass, stainless steel, and good-quality plastic containers tend to be the best choices based on affordability, chemical resistance, and convenience.

Common Storage Mistakes

Even with distilled water’s purity, improper storage conditions can lead to contamination and shorter shelf life. Avoid these mistakes:

– Using poor-quality containers that leach chemicals – Stick to food-grade materials. Don’t reuse old soda bottles.

– Not cleaning or sterilizing containers adequately before filling – Always wash and sanitize first.

– Failure to disinfect container lids and spouts – These high-touch areas also need cleaning.

– Letting sediment or biofilm accumulate – Periodically wash containers to remove gunk buildup.

– Allowing temperature fluctuations – Don’t store near heat sources or freezing.

– Stacking containers too high – Piles can topple and break. Leave room for removal.

– Leaving lids loose – Securely tighten or contents can evaporate and become contaminated.

– Exposing to sunlight – Keep bottles in dark places or use opaque stainless steel.

– Storing near chemicals – Don’t allow petroleum, paint, etc. fumes to taint flavor.

With vigilance and proper storage protocols, distilled water can maintain purity and fresh taste for years. But cutting corners with cleaning, lids, temperature, or exposure will shorten how long the water remains pristine.

Shelf Life & When to Replace

So how long can you store distilled water before it needs to be replaced?

– 2-3 months – Minimum lifespan if reusing old plastic bottles
– 6-12 months – Typical duration for glass bottles before taste changes
– 1-2 years – For “aged” water in climate-controlled environments
– 3-5 years – Ideal shelf life with refreshed stainless steel tanks
– 5-10 years – Maximum lifespan for unopened water bricks

Signs your distilled water needs replacing:

– Cloudiness or particles – Indicates microbial growth
– Musty or moldy smell – Bacteria or algae present
– Chemical taste – Leaching from container
– Ice crystals inside – Partial freezing occurred
– Labeled expiration date passed – Refresh every few years

While distilled water can technically be stored indefinitely, taste and quality benchmarks recommend replenishing your supply every few years. Rotate containers to use oldest water first, and replace any that show signs of cloudiness or contamination.

Frequently Asked Questions

Is it safe to drink stored distilled water that sat for years?

Distilled water stored properly for less than 5 years should remain chemically pure and safe to drink, though taste may start to suffer. Discard any water with foul odors, particles, or algae growth. When in doubt, re-distill old water instead of consuming.

Why does distilled water go bad in plastic bottles?

Low-quality plastic bottles can cause distilled water to go bad faster due to chemical leaching. BPA and phthalates from the plastic get into the water over time, causing an unpleasant taste and odor. Use only food-grade plastic bottles.

How long does distilled water last unopened?

Unopened distilled water stored in glass or food-grade plastic may last 12-24 months before tasting stale. Keeping in cool, dark conditions can extend this to 3 years. Bulk boxes of water bricks can last 5-10 years factory sealed.

Can you reuse glass distilled water bottles?

Glass bottles can be reused to store distilled water provided they are thoroughly cleaned and sterilized in between each use. Wash with soap and hot water, rinse well, and sanitize using heat, bleach, or other disinfecting methods.

Should distilled water be refrigerated after opening?

Refrigeration can help extend the shelf life of opened distilled water by slowing microbial growth. However, it is not required if stored in clean containers and cool, dark cupboards. Refrigerate only if planning to keep opened more than 6 months.

Conclusion

Distilled water requires proper storage to maintain purity. Use glass, stainless steel, or food-grade plastic containers thoroughly cleaned and sanitized. Store filled containers in cool, dark places away from chemical fumes. Limit light exposure and secure lids. Follow expiration dates and refresh supply every 2-5 years for best quality. With the right storage practices, distilled water will retain a clean, fresh taste for all intended uses.

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