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What’s Coming Out of Your Tap

27/02/2012 By Peter Brooks

Tap water in the UK is amongst the safest in the world and is monitored continually by the water companies that supply it to your home or business. Despite this though the Drinking Water Inspectorate (DWI) still allow for traces of certain tiny concentrations of certain substances to be present.

So Office Water Coolers thought they'd do a little research on your behalf to let you know exactly what is coming out of your tap.

Chlorine

It could be said that water starts it’s journey in the clouds before falling as rain water but for arguments sake, let’s say that water starts its journey to your tap in a treatment works. It is here that it must be disinfected so it is safe to drink. Chlorine is an effective killer of harmful bacteria and contaminants and is used in this process. When the water leaves the treatment works however, traces of chlorine are left in the water to keep it clean as it passes through the mains network. Many people complain about the taste and smell of chlorine in their water supply which can often be stronger the closer you live to the treatment works.

Fluoride

In 2003 the All Party Parliamentary Group on Primary Care and Public Health recommended that fluoridation be introduced "as a legitimate and effective means of tackling dental health inequalities". Around 10% of the UK receives fluoridated water. Although many health professionals champion the fluoridation of the water supply, many people dislike it and most water companies do not implement it. The following UK water utility companies fluoridate their supply:

·    Anglian Water Services Ltd
·    Northumbrian Water Ltd
·    South Staffordshire Water plc
·    Severn Trent plc
·    United Utilities Water plc

Lead

Installation of lead plumbing and use of lead solders in the UK has long been prohibited by Water Fittings Regulations but traces of this poisonous metal can still be found in water supplies that are connected to more antiquated plumbing systems, usually in old houses. The UK water quality standard for lead, which is based on the European Union standard, is currently set at 25µg/l (parts per billion). This will be reduced to 10µg/l in 2013 in line with the World Health Organisation's stated guidelines.

Metals

Trace elements of iron, aluminium and manganese can all be found in mains water but all are generally harmless. The standards stipulating their acceptable concentrations (200µg/l for aluminium, 200µg/l for iron and 50µg/l for manganese) is mainly to do with water colouration and staining rather than any potential affect to your health.

Pesticides

These can include insecticides, herbicides, fungicides and algicides and are present in the environment as a result of industry and agriculture. Whilst the UK government constantly monitors drinking water for traces of pesticides, it does allow their presence in the water supply albeit at an extremely low level which cannot feasibly affect health (between 0.1 µg/l and 0.03 µg/l for any individual pesticide).

Nitrate

Nitrates (NO 3) can be natural to the environment but are often caused by fertilisers whereby it is taken up by rainwater and seeps down into the groundwater. The standard for nitrate concentration is 50 mg/l (part per million) with cases over 100mg/l thought to be a contributing factor in cases of methaemoglobinaemia (blue baby syndrome) although there is now considerable scientific doubt over this. Some water utility companies mix water with high nitrate contents with low nitrate content water, thus diluting it to conform to UK standards.


At Office Water Coolers we appreciate that traces of some of the substances above is inevitable (such as leftover chlorine from the disinfection process) but we know all to well the desire for odour-free, clean, purified water delivered straight to your glass. All our POU water coolers are fitted with built-in-filters which remove unwanted tastes and contaminants.



© 2012 Office Water Coolers

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