Nitrates In Drinking Water Increase The Risk Of Colorectal Cancer

Nitrates In Drinking Water Increase The Risk Of Developing Colorectal Cancer

What has been suspected for years has now been confirmed: the presence of nitrates in drinking water increases the risk of developing a common form of cancer, even at rates below the current ‘safe’ levels set by the World Health Organisation and followed by the UK Drinking Water Inspectorate.

Researchers at Aarhus University in Denmark carried out the largest epidemiological study of its kind (1) and found a positive correlation between long-term exposure to nitrates in drinking water and the development of colorectal cancer, one of the most common cancers in Denmark and the most frequently occurring, worldwide.

Nitrates are naturally present in soil and water at unproblematic levels – excessive levels are caused by the contamination of waterways by human activity including industrial and agricultural pollution. Nitrates are a component of agricultural fertilisers and the UK has guidelines for reducing fertiliser run-off into rivers and streams:

farmers are supposed to avoid spreading on slopes, in wet weather and during winter”. (2) 

But it’s known that in some parts of the UK, even where river catchment areas have special conservation status,

huge quantities of slurry and poultry manure are spread on farmland and… the rules and guidelines governing how this should be done are invariably broken”. (3).

Excessive levels of nitrates negatively impact the health of rivers and streams; they cause unchecked algae growth, which depletes the water of oxygen and makes the reproduction and survival of fish, aquatic insects, wildlife and plants difficult or impossible.(4) The risk to human health occurs because once entering the body, excessive nitrate levels interact with normally occurring amines and amides and convert into carcinogenic N -nitroso compounds.

The World Health Organisation recommends nitrate levels of 50 mg per litre of drinking water, a standard that Denmark, EU countries and the UK authorities follow.

Problematically, the Aarhus study found that colorectal cancer risks are associated with “concentrations far below the current drinking water standard”(5); in people exposed to the highest concentrations found in the study (9.3 mg per litre water) a 15% greater risk of developing colorectal cancer was identified, compared to those exposed to the lowest concentrations found (1.3 mg per litre water). 

The researchers report: “we found statistically significant increased risks at drinking water levels above 3.87 mg/L, well below the current drinking water standard of 50 mg/L”. (6)

As a result, Professor Torben Sigsgaard from the Department of Public Health at Aarhus University warns:

“the drinking water standard ought to be lower in order to protect against chronic health effects” (7). 

Clearly, current drinking water standards are not safe. But you don’t need to wait for the World Health Organisation and UK water regulators to take action, you can protect your health today by installing a Pure H2O tap water purifier in your home, workplace or venue.

Our technologically advanced reverse osmosis (RO) tap water purifiers remove up to 70% of nitrates and, when coupled with de-ionisation, our RODI water purification systems remove 99.99% of naturally occurring impurities and man-made contaminants including microplastics, hormones and medications, petrochemicals, lead and heavy metals. Our RODI purifiers also remove 100% of disease-causing micro-organisms, pathogens and viruses or your complete peace of mind.

Our drinking water purification systems not only protect your health, they are also an environmentally friendly option. Compared to drinking bottled water, our purifiers reduce plastics use and waste, carbon footprint, food miles and save you money, too. Pure H2O purifiers last longer than others on the market, they are water efficient and contain recyclable components.

Our purifiers are designed specifically for treating UK water whether from public supply (tap water) or private water supply (bore holes, wells, etc).

We’d like to help you protect your health. Call us today to discover which of our tap water purifiers is best for you and to book installation by one of our specially trained engineers at a time that’s convenient to you: 01483 617 000. Alternatively email customerservice@pureh2o.co.uk or visit http://www.pureh2o.co.uk/contact.html

References

1,5,6,7 Jörg Schullehner et al. Nitrate in drinking water and colorectal cancer risk: a nationwide population-based cohort study, International Journal of Cancer 23.02.18 https://onlinelibrary.wiley.com/doi/full/10.1002/ijc.31306  accessed 11.04.18

2,3 Steffan Messenger: Wales’ farm pollution action ‘absolutely useless’ BBC News http://www.bbc.co.uk/news/uk-wales-43389895 accessed 28.04.18

4 Partnership For Environmental Education and Rural Health: Nitrates and their effect on water quality, Wheatley River Improvement Group http://www.wheatleyriver.ca/media/nitrates-and-their-effect-on-water-quality-a-quick-study/ accessed 30.04.18

6 Nitrate in drinking water increases the risk of colorectal cancer https://www.wateronline.com/doc/nitrate-in-drinking-water-increases-the-risk-of-colorectal-cancer-0001 13.02.18 accessed 11.04.18

Toxic Arsenic in Cornish Private Drinking Water Supplies

Pure H2O RODI Removes Carcinogenic Arsenic from Private Drinking Water Supplies.

A recent study published in Science Reports reveals that some homes in Cornwall with private water supplies (PWS) have levels of arsenic exceeding World Health Organisation guidelines. As a result, householders are

“exposed at concentrations harmful to health… chronic exposure to arsenic in drinking water is a well-documented cause of numerous cancerous and non-cancerous health defects, including cancers of the lung, bladder and skin.”*

How does this happen?
Cornwall is one area of the world with naturally-occurring high levels of arsenic in its geology. The 2016 study by Middleton et al reports there are estimated to be 20,000 – 30,000 PWS wells in Cornwall, with 2,462 PWS households registered with the Drinking Water Inspectorate (the actual number may be much higher). These PWS are the responsibility of their owners and users, rather than any statutory body.

What can be done?
The government advises “installing appropriate treatment that is capable of treating water to a consistently satisfactory quality”.

Our patented Reverse Osmosis with De-Ionisation (RODI) process is the most efficient and cost-effective way of treating your private drinking water supply, ensuring total removal of Arsenic along with a myriad of other contaminants and impurities both naturally-occurring and man-made.

Additional Benefits of the Pure H2O RODI Purifier

Our RODI purifier protects your health and gives you total peace of mind about the safety of your water. And not forgetting that it gives you delicious tasting water, more palatable than any other. It is purer than all bottled water brands and kind to the environment, with a 95+% carbon footprint reduction compared to bottled, and zero plastics use and waste.

Our RODI purifier is typically installed under your kitchen sink for maximum convenience, but we can tailor our systems to suit your needs and would be happy to advise on the best installation for your home.

Find out more

Call us now on 01483 617 000, email customerservice@pureh2o.co.uk or visit our main website for further information: http://www.PureH2O.co.uk

References:

Middleton, D. R. S. et al. Urinary arsenic profiles reveal substantial exposures to inorganic arsenic from private drinking water supplies in Cornwall, UK. Sci. Rep. 6, 25656; doi: 10.1038/srep25656 (2016). Link: http://www.nature.com/articles/srep25656

Government advice: http://www.privatewatersupplies.gov.uk