Ultra Violet Sterilising Systems

Our UV systems are ideal for treating private water supplies.

Ultra Violet water filters are highly efficient at killing bacteria, viruses and other micro organisms that can be found in un-treated water.

The way they work is by passing water through a chamber which is flooded with Ultra Violet light.

The UV light shines powerfully through water passing along the unit, destroys the cell's DNA thereby neutralising it.

Typical Uses for UV systems

If you have a private water supply ie get your water supply from a well, borehole or river etc.

How to get the right UV unit for your needs

The main criteria you need to consider is what size unit you need.

This main factor this depends on is the flow rate of your water.

You may also need to consider what electrical power you have available.

When you have established these please refer to your UV filters selection table

Importance of choosing a high quality UV unit

To choose the best UV for your needs you also want to make sure it is a high quality and not low quality UV unit.

This is because you want to make sure the UV you are using is reliable.

If the UV unit fails you might, at best, end up with a bad stomach.

At worst - for example if you ingest micro organisms like cryptosporidium - you could have serious health problems that last for several months.

See below for More on High vs Low Quality UV Water Filters

Other essentials

Finally all UV water filters should have a suitable pre-filter to remove any waterborne particles or debris.

These will create a "shadow" behind which some micro organisms, like bacteria, might be able to hide. This prevents the UV light neutralising them.

Your recommended pre-filter for each UV model depends on your local water quality. We can advise you on this.

Further information

More on High vs Low Quality UV Water Filters

How to find your water's flow rate

Ultra Violet filters selection table

Contact our UV specialists

More about High vs Low Quality Ultra Violet Water Filters

As stated above you need to buy a well made, high quality unit and avoid low quality UV filters.

Some of the differences are:

A low quality unit has no inbuilt warning system, and / or no lamp-life count down indicator - which gives you a pre-warning that the lamp needs replacing.

Our units give you good warning with a weekly alarm that gives you a regular reminder for the last 4 weeks of the lamp's life. At the end of the lamp's life your lamp still works but it then starts to beep incessantly until you change it.

Low quality units do not do this. Instead they simply stop working, leaving you with a sudden problem of no safe, filtered water.

We sell high quality R-Can, Sterilight and Trojan units - famous, market leading brands.

How can you tell good from bad?

Notice that we say "low quality units". We don't say "low priced" because often these low quality cheap units - imported from China , India or Eastern Europe- are more expensive than the better ones.

As a website and not a shop that needs to cover its high costs of rent, utilities and rates, we can offer our high quality North American made, famous brand UV's at a reasonable price.

More benefits of good quality UV systems

Our high quality branded UV systems have high frequency electronic controllers to start up and run the lamp / bulb.

Lower quality UV's tend to us old style choke and starter circuits to run the lamps

The former are much more efficient thereby reducing running costs. They operate the lamps more effectively giving a better and more stable UV output. This helps prolong the life of the lamp in operation.

Ironically some lower quality UV's use well made lamps supplied by trusted manufacturers' like Phillips. But even these will suffer from the old style choke and starter circuits. The lamps won't work nearly as well. And they won't last as long.

Considering that a UV lamp costs around £100 plus to replace, buying a cheaper unit will end up costing you more in the long run.

Finding your water flow rate

This is not as easy as one might expect. There are no hard and fast estimates of the water flow rate in any particular building.

Even a plumber or engineer would only be guessing. They would have to work it out on a case-by-case basis.

However, provided you are prepared to roll up your sleeves it is not that hard to get a fairly accurate estimate of the flow rate in your house.

The best way of doing this is to actually get a bucket and stop watch and time the flow from each tap or shower head. this might seem silly but it will be accurate.

The trick is to estimate the maximum amount of water you might use at any one time. That will be your maximum flow rate.

Flow rate considerations

There are various factors to bear in mind.

For example your water heater may only allow one hot supply at a time.

So whereas you might have three bathrooms, actually only one can be used to run a bath or a shower at one time.

Pump / water pressures and flow rates

Don't be tricked by the reported pressure of your borehole pump or mains water (yes some people use UV's for their mains water supply).

Just because a pump can work up to a certain rate does not mean that is the flow coming into your house. This is set by the amount of water you are using in the house at any given time.

Put simply the water only flows when you turn on your taps. The number of taps you have on at any one time is what will affect your flow rate.

When you have got an idea of your water flow rate see the table below for choosing your best UV water filter

UV Filter Selection Table

What's next?

Because of the range of combinations available and the need to ensure you are getting the right system for your precise needs, the best way forward is to give us further details of your requirements - either on the phone, or via our information form - and we will get back to you very soon.

Please call our help line on 0845 120 6369 to leave a message for our specialists or fill in the quick enquiry form below for a rapid response.

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