EWT has been helping homes go with the flow for over 10 years offering refreshing water filtration services throughout the nation.  Groupon Asks Groupon finds out about EWT’s filtered water installation process. G What will happen during installation? The EWT technician will install a Model G1 drinking water filter, which is a separate tap positioned alongside the current sink tap, which can then be used for drinking water. The deal includes six months tap rental. G What happens after 6 months? Clients can choose to keep the filter at a reduced price of €1.90 per week for the next 6 months. After which normal rental charge rate of €3.70 applies with the unit being replaced every 12 months. If the customer decides to have it removed, it will be at no extra cost. G What else does the customer need to know? The unit filters sediments from drinking water, and comes with an energy efficient control valve and a lifetime warranty, plus a free call out service to put minds at ease.