Tap water in Edmonton?

[toytech]

the tap water here is bad i just checked the tds and its over 135 ppm back in bc the tds was 24 ppm . There could be 135ppm of calcium or it could all be phosphates .I use rodi its cheap insurance for my tank , if i can stop $500 worth of corals dieing due to phosphates buy buying a $150 rodi unit ill spend the $150 everytime.