Any company that gives you a TDS meter with their product is SERIOUS about water quality. we have had our 10 cup pitcher now for over a year and love the clean water. One recommendation that we would like to make is, we live in Canada and the twice a year Filter sales that you guys offer are for USA customers only due to the shipping i guess, even with our printed coupons its still much more expensive here in Canada than for you folks down there and thats taking the exchange rate into consideration. lower prices up here or better canadian sales would be very welcome and appreciated. otherwise keep up the good work