normal?

[cf1]

That's excellent info! Thx mike. Will need to find that out about the water here. How much a rodi filter go for? Thinking about getting one for the whole house and the softener too.

[mike31154]

RODI systems run between $150-200 and much higher depending on how many bells & whistles. Those commonly used in the hobby are in the $200 range and are not whole house. They will have one or two sediment filters, a carbon stage (perhaps 2 if your water is treated with chloramine), an RO membrane stage & finally a DI stage. Water softener may not be needed, again, find out more about your source water first. Best to look for a RODI unit on line, the local hardware stores charge much more & generally aren't able to provide customized set ups.

Many of us put a T fitting before the DI stage & make RO water for day to day use, coffee, cooking, wine/beer making, ice cubes and so on. Some RO systems include a small pressure tank & a small tap for pure drinking water, but these add complexity & cost to the system. This makes the system cycle often causing premature fouling of the RO membrane. Longer runs of the system (minimum 5 gallons) are much better. I find filling a standard water jug with RO water when I run the system a great way to have fresh water for household use on hand.

[cf1]

I have a mini RO filter right by the kichen sink which cost over $600. Smalk output though. Will look for those online. Thx

[mike31154]

$600!!! Does it at least use standard size filters or does the manufacturer have some funky proprietary configuration that forces you to buy theirs?

Here's a link to give you an idea, there are many other suppliers, even sponsors on this forum. From the US you of course take a hit on the exchange rate & shipping, so if you can find one in Canada, might save a few $$s.

I like these guys since I've found them to be very informative & helpful with info in tailoring a system to your particular needs without going overboard.
http://www.buckeyehydro.com/premium-rodi-system/

EDIT: Clear housings for the sediment filter(s) are a good idea & also a DI stage that is mounted upright vs horizontal. 75 gpd RO membrane is one of the more efficient at reducing TDS.