Do window cleaners use their own water?

April 5, 2025 | 4 min read

A garden tap with water flowing out.

It’s true, most professional window cleaners use their own water when they come to clean your windows. You might have been worried that hiring a window cleaner would mean that you'd have to have an outside water tap for them to use – or worried about the extra cost to you for the water being used. Well, you can relax.

Read on to learn more about the most common practices that window cleaners use when it comes to water.

Water-fed-pole window cleaning

As you will have probably noticed, most window cleaners today use the water-fed-pole system which pumps purified water through a telescopic pole and up through a brush to your window. You might be wondering though, what is this purified water and where does it come from? Well, we’ll answer that question briefly for you.

What is pure water?

Unsurprisingly, pure water starts out as just plain tap water. It goes through various forms of filtration including reverse osmosis and is finally processed by deionisation. The subject of pure water is worthy of its own blog post, but for now we’ll try to keep on topic. The purified water is now ready to be transferred to a tank in the window cleaner’s van where he’ll be able to use it for cleaning all the windows on his round for the day.

Although the process doesn’t take too long, making purified water does take some time and because of this it is very uncommon to be able to use it on demand while it’s being treated. For this reason, window cleaners will not simple be able to connect straight to your tap and start cleaning your windows. I.e. it is purified and stored ready for use.

Efficient for the window cleaner

Efficiency is key when a window cleaner must complete several window cleaning jobs in a day. So, by carrying his own supply of ready-purified water he’s able to turn up to your home or place of business and get stuck into his work without all the messing around of finding taps and connecting hoses.

Your window cleaner will simply be able to pull the hose out from his van to your property, connect his pole and begin cleaning your windows – self-sufficient and convenient for everyone.

Exceptions to the norm

Of course, there are some exceptions, as is often the case. Let’s have a quick look at what these might be.

  • Topping up – Some window cleaners who carry their water filtering equipment with them in their van might ask their customers if they can top up their tank while they’re cleaning their windows. This might be because the capacity of their tank is a bit on the small side, and they need to regularly top up while they’re out.
  • We personally, don’t like this practice too much as it may seem unprofessional to the customer. The customer also, may not like the fact they their water is being used knowing that they will be billed for it personally. In any case, a window cleaner should always ask the customer’s permission before he uses their water supply.

    As you can probably tell, here at Farnes Cleaning Services, this is not something that we ever do. We like to come prepared every time we come to clean your windows. We don’t want the hassle and neither do you.

  • Large jobs – For jobs where a large quantity of water will be used, using the customers water might be a sensible option. An example might be if your window cleaner is going to wash down your fascias and soffits, some cladding, or clean your conservatory roof. Pure water is not needed for the majority of this type of cleaning, so plain tap water can often be used. Again, remember that if a window cleaner is going to need to use a customer’s water supply, he should always get the customer’s permission first.
  • Conclusion

    Most window cleaners will use their own water when they come to clean your windows. It’s quick and convenient for them to use purified water from a tank in their van and they don’t waste time looking for water sources. Some window cleaners might ask to use your water if they have a large job to carry out and can’t practically carry the amount of water with them that would be needed for the job.

    You can rest assured that we only ever use our own water when it comes to cleaning your windows. We love being able to provide hassle-free, no-nonsense window cleaning services to our customers in Eastbourne and Sussex and being able to bring value and great service to you brings us a lot of pleasure. Get in touch with us today if you’re looking for great window cleaners in our little part of the world – you can request a free quote today.

    If you would like to leave us a comment about this blog post, feel free to use our contact form.

    Tags: window cleaningwater

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    Eastbourne
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