E.coli and Coliforms are “Indicators” which means they provide evidence that harmful contaminants are getting into the water. E.coli (0157) can, and does seriously harm people, however other viruses are just as lethal e.g. Cryptosporidium. A failed water test is a clear indicator that you need to do something about your drinking water and that there is a risk to public health – that is why the Environmental Health Department will have sent you a letter, suggesting you take steps to make improvements.
New Private Water Supply Regulations – pdf »
– what do they mean for owners and consumers?
Using bottled water as the main drinking supply to the house can be very costly. (in some instances, litre per litre, branded bottled water can be as expensive as petrol). Unlike drinking spring water, buying bottled water is not very environmentally friendly. On the whole, filtered spring water will taste better than bottled water. In part this is due to spring water being well aerated (contains elevated levels of oxygen) and a low pH adds a natural sweetness to water.
As part of the property search, potential buyers are often alerted to the dangers of drinking untreated water
When people complain about the taste of “town water” they are normally referring to the taste imparted by chlorine (the same chemical used to treat swimming pools) used by the water companies. Chlorine is very rarely used to treat spring or borehole water, the system of choice being UV Disinfection. UV gets rid of all harmful bacteria without altering the taste of the water or removing any of its healthy minerals.
In the event of a fault, the UV TAG will fail to safe, shutting off the water if required and then sending an alarm message via telemetry
There is no scientific evidence to support the claim that people who regularly drink contaminated water build up an immunity to harmful bacteria. Even if we did build up an immunity to one particular type of contaminant, for example E.coli, that would not necessarily mean we would be immune to the harmful effects of drinking water containing other types of contaminant, for example cryptosporidium. Even if you believe you have built up an immunity to some of the bacteria in the water, other people visiting your property may be at risk, especially the young, the aged or people who do not enjoy good health.