Considering using my tap water for top-off.

Flipperfin · 12/12/2018, 11:40 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?

Scrubber_steve · 12/12/2018, 01:07 PM

Silicates?
Total chlorine?
Phosphate?
Copper
Other heavy metals?
Pestercides?
?????..

Flipperfin · 12/12/2018, 01:59 PM

Quote:

Originally Posted by Twinfallz

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

Scrubber_steve · 12/12/2018, 06:27 PM

Quote:

Originally Posted by Flipperfin

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, 09:21 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.

Scrubber_steve · 12/13/2018, 03:47 PM

Do you have copper piping in the home?

12/12/2018, 11:40 AM	#1
Flipperfin Registered Member Join Date: Feb 2017 Location: Denmark Posts: 48	Considering using my tap water for top-off. 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?

12/12/2018, 09:21 PM	#5
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	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. __________________ Jonathan Bertoni

12/12/2018, 01:07 PM	#2
Scrubber_steve I'm really very likeable Join Date: Aug 2016 Location: Down Under Posts: 676	Silicates? Total chlorine? Phosphate? Copper Other heavy metals? Pestercides? ?????..

12/13/2018, 03:47 PM	#6
Scrubber_steve I'm really very likeable Join Date: Aug 2016 Location: Down Under Posts: 676	Do you have copper piping in the home?