My RO/DI is 4 years old and still reading zero ppm on the out flow.
In flow tapwater is 12PPM in Port Moody.

Mike, ple Date
Mike, this sample was taken about a mile from my house, but the report is over 1 year old

Yes, like I mentioned, an RO is a great investment either way. I make wine & beer at home, so the pure water is not only for my tank critters! Despite the comparatively high tap TDS, I'm still on the same RO membrane after close to 4 years & over 14,000 US gallons of water throughput. Yes, I've been a bit anal by meticulously keeping track of my RODI water production on an Excel spreadsheet!

I used treated tap water for the first year or so my tank was up & that was clearly not a smart way to go, especially with a BTA in there. It never looked all that great until I made the switch to pure water for changes & top ups. Below is a report (also somewhat dated) of what comes out of Kalamalka Lake. I had a quick look at a more recent report & the numbers are very close to the same. Actually some good numbers for calcium, but also traces of nasties that are cause for concern over the long term.

North Kalamalka Lake Intake Water Quality 2008
Water System: Greater Vernon Water
Source: Kalamalka Lake
Facility: Kal Lake Pumpstation
Sampling Point: Kal Lake Intake
Date: 7/14/2008
INORGANIC Results (mg/L unless noted)
Aluminum <0.050
Antimony <0.0030
Arsenic <0.0050
Barium 0.027
Boron 0.021
Cadmium <0.00010
Calcium 40.6
Chloride 5.38
Chromium <0.015
Copper <0.0030
Cyanide < 0.01
Fluoride 0.24
Iron <0.20
Lead <0.001
Magnesium 19.8
Manganese <0.0050
Mercury <0.00030
Molybdenum 0.005
Nitrate (as N) 0.069
Nitrite (as N) <0.010
Potassium 5.07
Selenium <0.0050
Sodium 18.4
Sulphate 51
Uranium 0.003
Zinc 0.011
PHYSICAL Results (mg/L unless noted)
Alkalinity (as CaCO3) 152
Colour <5 TCU
Conductivity 409 microS/cm
Hardness (as CaCO3) 183
pH 7.8
Total dissolved solids 238
Turbidity 1.0 NTU
UV Transmittance @254(%) 91%

Ha,ha & edit: my water report is bigger than yours!

Hehe, ya, I only get the short-bus report
I'm glad to see you have, at least for a short time, some better water

Yeah, not sure how long, but out of curiosity I just had a look at the latest report from the Duteau Creek source. Note the difference in TDS! But there are still traces of nasty stuff & the calcium is much lower. Too bad there's not a way to filter everything but the calcium & magnesium out of the Kal Lake water...

Water System: Greater Vernon Water,
Source: Duteau Creek
Facility: Headgates
Sampling Point: Headgates Cl2 bldg (1-1-SR, 5E8D)
Date of Sample: 7/19/2011
INORGANIC, Results (mg/L unless noted)
Aluminum (total) 0.114
Antimony (total) <0.0010
Arsenic (total) <0.0050
Barium (total) <0.050
Boron (total) <0.040
Cadmium (total) <0.00010
Calcium (total) <5.0
Chloride 0.21
Chromium (total) <0.0050
Copper (total) 0.0245
Cyanide (total) <0.01
Fluoride 0.13
Iron (total) 0.31
Lead (total) <0.0010
Magnesium (total) 1.23
Manganese (total) 0.02
Mercury (total) <0.00020
Molybdenum (total) <0.0010
Nitrate (as N) 0.02
Nitrite (as N) <0.01
Potassium (total) 0.8
Selenium (total) <0.0050
Sodium (total) 1.36
Sulphate 3.1
Uranium (total) <0.00020
Zinc (total) <0.040
PHYSICAL, Results (mg/L unless noted)
Alkalinity (Total, as CaCO3) 14.3
Colour 75
Conductivity 38 microS/cm
Hardness (total, as CaCO3) <12.9
pH 7.14
Total dissolved solids/TDS 44
Turbidity 0.9

Yipes, that does still add up to a lot of I wouldn't even want to drink that

Thought I might resurrect this thread for the benefit of those in Vernon who may be affected/interested.

I'm back on the Duteau Creek water source with TDS just measured at 34. Much lower than Kal Lake source which has been shut down due to possible turbidity from milfoil reduction activities in the Lake. Found the info in the Vernon Morning Star paper. This will continue until end March.

Good time to fire up the RODI system, stock up on water with less wear & tear on your membrane.

It may be argued that certain components (dissolved minerals etc.) in drinking water are beneficial to our health. If not mistaken, 500 TDS is considered the legal limit for water provided for human consumption, potable water in Canada. It's up to the individual to research the water reports from their supplier & decide if they wish to drink it or buy bottled/drink RO. There are plenty of forums etc. full of heated discussions as to what's beneficial & what isn't. Obviously the heavy metals such as lead & mercury are proven bad guys. If you look at the numbers in the Duteau Creek report I posted earlier, most of the larger numbers of elements in the water are things like iron, magnesium, calcium & alkalinity. I don't think any of those are considered harmful.

Heads up again for all the Vernonites normally on the Kalamalka Lake water source, we're back on the Duteau Creek source at the moment. Softer water! Good time to fire up the RODI system, have a bath/shower, do dishes, laundry etc. Just started up my own RODI after reading the news in the Friday morning paper. Tap water TDS is 64.

I'm still getting 46 tds, been a good summer for making water