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View Full Version : Considering using my tap water for top-off.


Flipperfin
12/12/2018, 10:40 AM
We have some really clean tap water here in Denmark, and my local tapwater provider tests its water very frequently. The groundwater is very clean to begin with, so afaik extremely little chemical cleaning is used.

Looking at the reports from my provider, the tap water has these levels:
Alk 8.3 dH
Calcium 50 mg/L
pH 7.8
Nitrate 0.53 mg/L
Cupper 0.2 μg/L


There are a few reasons im considering this:

- Im tired of always making more RO/DI water, and the dunks of water take up a lot of space in my smallish apartment
- I'm having a hard time keeping alkalinity high enough (around 6.7 - 7 atm), so Im assuming this will help?
- I won't have to use as much kalkwasser

What do you guys think? I've met several people in Denmark who do it without issues.. Should i be worried about cupper build up though?

Twinfallz
12/12/2018, 12:07 PM
Silicates?
Total chlorine?
Phosphate?
Copper
Other heavy metals?
Pestercides?
?????..

Flipperfin
12/12/2018, 12:59 PM
Silicates?
Total chlorine?
Phosphate?
Copper
Other heavy metals?
Pestercides?
?????..

No chlorine (not used here), no measurable phosphate or silicates.
All pesticides are <0.001, ug/L
Other heavy metals also below measurable values from what i can tell

Twinfallz
12/12/2018, 05:27 PM
No chlorine (not used here), no measurable phosphate or silicates.
All pesticides are <0.001, ug/L
Other heavy metals also below measurable values from what i can tell

what TDS or condustivity reading do you get?

bertoni
12/12/2018, 08:21 PM
There should be some sort of disinfectant in the water. Ozone? Chloramine? You might be fine with tap water and a treatment product, but if they ever put an anti-corrosive into it, that could be a big problem.

Twinfallz
12/13/2018, 02:47 PM
Do you have copper piping in the home?