How to Sanitise a Water Cooler: Products and Steps

How to Sanitise a Water Cooler: Products and Steps

Last Updated: 1 November 2026

Quick Summary

The best water cooler sanitiser products in Australia are a rinse sanitiser for the inside reservoir and a spray sanitiser for outside contact points like bottle caps and taps. Clean the cooler first, then sanitise, following the label directions exactly. Clean every month for family homes, or every week or fortnight for busy offices.

  • Use a rinse sanitiser for the inside reservoir and a spray sanitiser for outside contact points.
  • Clean first, then sanitise, because sanitiser cannot work well on a dirty surface.
  • Measure the rinse sanitiser with the built-in 25ml chamber for the right amount every time.
  • Rinse the reservoir with fresh water until no taste or residue remains.
  • Sanitise monthly in family homes, or weekly or fortnightly in busy offices.

Table of Contents

Water coolers can look clean on the outside and still harbour bacteria where you cannot see them, so regular upkeep of any water cooler sanitiser products in Australia matters. Water coolers that are not maintained regularly can develop a problem with the reservoir and the tap, often showing up as water that starts to taste off. A regular sanitising routine, with the right products, stops that before it starts. This guide walks through what to use and how to do it properly.

Why Water Cooler Sanitising Matters for Australian Homes and Offices

A water cooler is a warm, damp place where germs can build up over time. Every time someone fills a cup or presses the tap, they add a little more to the mix. Households and workplaces share this risk, from a family kitchen to a busy office break room. Regular maintenance remains the most effective defence against these invisible threats, and establishing a consistent routine for cleaning water containers ensures that every sip remains as fresh as the first.

Regular sanitising keeps the water tasting fresh and helps protect everyone who drinks from the cooler. It also protects the machine itself, so it runs well for longer. Skipping it is the most common reason coolers start to smell or taste odd, which is why choosing reliable water cooler sanitiser products in Australia makes such a difference.

Cleaning Versus Sanitising: What the Difference Means

These two words are often used as if they mean the same thing, but they do different jobs.

  • Cleaning removes dirt, grime and visible residue from surfaces.
  • Sanitising reduces the number of germs left on a surface after cleaning.

You should clean first, then sanitise. A sanitiser cannot do its job well on a surface covered in dirt. Think of cleaning as the groundwork and sanitising as the final step.

Choosing a Food-Safe Sanitiser for Your Water Cooler

Pick a product made for water coolers and check that it is designed to be used where drinking water is stored. Read the label before you buy, and follow the directions exactly.

Awesome Water® offers two sanitisers that cover the main parts of a cooler. You can find them on the Cooler Lovers cleaning products page.

  • Rinse Sanitiser is made for cleaning the inside reservoir. Its 500ml bottle has a built-in 25ml measuring chamber, so you use the right amount every time. Check the Cooler Lovers Rinse Sanitiser listing for the full details.
  • Spray Sanitiser is made for the outside contact points, such as bottle caps and taps.

If you want both steps covered in one order, the bundle is the simplest option.

COOLER LOVERS™ - Rinse Sanitiser
COOLER LOVERS™ - Rinse Sanitiser

Watch out: never mix sanitiser products with other cleaners. Rinse thoroughly after using any product inside the reservoir, as the label directs.

How to Clean a Water Cooler, Step by Step

Set aside about 30 minutes and gather your supplies first. You will need the rinse sanitiser, the spray sanitiser, clean cloths and a clean container for rinsing.

COOLER LOVERS™ - Spray Sanitiser →

Hands in yellow rubber gloves cleaning the tap and bottle area of a water cooler in a bright kitchen
Hands in yellow rubber gloves cleaning the tap and bottle area of a water cooler in a bright kitchen
  1. Switch off and unplug the cooler. Empty the water reservoir completely.
  2. Clean the inside. Use the rinse sanitiser as directed, measuring the amount with the built-in chamber. Let it work for the time on the label.
  3. Rinse the reservoir well. Flush it with fresh water until no taste or residue remains.
  4. Spray the outside contact points. Apply the spray sanitiser to bottle cap areas and taps, then wipe with a clean cloth.
  5. Let everything dry, then refill. Reconnect the cooler and run a few cups of water through the tap before drinking.

The steps below summarise the cleaning routine, with the time or detail each one needs.

Step What to do Time or detail
1. Switch off Switch off and unplug the cooler, then empty the reservoir Set aside about 30 minutes
2. Clean the inside Use rinse sanitiser as directed Measure with the built-in 25ml chamber; let it work for the label time
3. Rinse the reservoir Flush with fresh water Until no taste or residue remains
4. Spray outside contact points Apply spray sanitiser to bottle caps and taps, then wipe Use a clean cloth
5. Dry and refill Let everything dry, reconnect, refill Run a few cups through the tap before drinking

How Often to Sanitise a Water Cooler

The right schedule depends on how much the cooler gets used. A busy office cooler needs attention more often than one in a quiet home.

  • Busy offices and shared spaces: sanitise on a regular weekly or fortnightly routine.
  • Family homes: sanitise monthly, or sooner if the water starts to taste or smell different.
  • Any cooler: clean straight away if you notice visible slime, cloudiness or an odd smell.

Setting a fixed day in your calendar is the easiest way to keep to the routine.

Water Cooler Maintenance Checklist

Use this checklist each time you service your cooler:

  • Switch off and unplug the cooler
  • Empty the reservoir completely
  • Clean the inside with rinse sanitiser, measured with the built-in chamber
  • Rinse the reservoir with fresh water until no residue remains
  • Spray bottle cap areas and taps with spray sanitiser
  • Wipe down the outside with a clean cloth
  • Let everything dry, then refill and run a few cups through the tap
  • Note the date in your calendar for the next service

Booking Your Next Sanitising Supplies Order

Running out of sanitiser halfway through the routine is an easy mistake to make. Keep a spare bottle on hand so you can clean on schedule.

If you need both products, the Rinse & Spray Sanitiser Bundle Pack covers the inside and outside of your cooler in one purchase, which makes reordering simple. For more background on choosing a cooler for home or office use, you can also read our best water cooler for home office use guide.

COOLER LOVERS™ - Rinse & Spray Sanitiser Bundle Pack
COOLER LOVERS™ - Rinse & Spray Sanitiser Bundle Pack

Frequently Asked Questions

What can I use to sanitise a water cooler?

Use a sanitiser made for water coolers, such as the Cooler Lovers™ Rinse Sanitiser for the reservoir and the Cooler Lovers™ Spray Sanitiser for the tap and bottle cap area. Both are ready to use, so there is no need to mix anything. Follow the label directions for contact time and rinsing. Household products are not designed for this job, so check that any alternative is suitable for food-contact surfaces before using it on the reservoir.

How often should a water cooler be sanitised?

Sanitise the reservoir and external contact points on a regular schedule, and more often in busy offices or homes where many people use the cooler. The supplied product information for the Cooler Lovers™ Spray states that external sanitising can be carried out as often as necessary. Set a routine, such as monthly, and adjust it based on how often the cooler is used and how it is handled.

Do water cooler sanitiser products need to be rinsed off?

Follow the directions on the specific product you are using. Surfaces that come into contact with drinking water should be rinsed thoroughly after sanitising so that no residue remains in the water. The Cooler Lovers™ Rinse Sanitiser comes with a built-in 25ml measuring chamber to help you dispense the specified amount for reservoir cleaning.

What is the difference between cleaning and sanitising a water cooler?

Cleaning removes visible dirt, residue and build-up from surfaces. Sanitising reduces the number of micro-organisms on those surfaces to a safer level. A water cooler usually needs both: clean the surfaces first, then apply a sanitiser to the reservoir and external contact points such as the tap and bottle cap area, following the product directions.


Keeping your water cooler clean is quick once you have the right products and a routine. Start with a clean reservoir and a sanitised tap, and your water will taste better for longer.

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