IM going to have a problem soon as to how i can purify my water , the water board are going to be fitting new mains supply to the houses around my area , this means they are going to put tempory water supplys to all the houses in the area all outside taps are to be shut off by the water board while the work takes place . THE outside tap is what i use but im going to be without this for 6 weeks , i use on average 3000ltrs per week can anyone suggest a way how i could still carry on to produce the water i need ? would using di only work with tds from tap of around 320 ? if i was to use di only how long would it take to produce 500 ltrs a time ? any help thanks ive got until the 28th july to get sorted thanks .