Bru'n Water - incomplete water values

Brewing Processes
1

I’ve obtained details of my water quality from the water co., but it doesn’t appear to cover all of the values listed in the Bru’n water spreadsheet:

Sodium: 28.81mg Na/l
Calcium as CaCO3: 85.42mg/l
Iron: 21.30 ug Fe/l
Sulphate: 63.62 mg SO4/l
Chloride: 28.86mg Cl/l
Nitrate as NO3: 06.62mg NO3/l
Nitrite: 0
Fluoride: 0.43mg F/l
Alkalinity as CaCO3: 55.52 mg CaCO3/l
PH: 7.66
We do not measure for Potassium, Bicarbonate or Carbonate within the supply.

They also appear to have not included the Magnesium value.  I have seen that, reading the comments on the spreadsheet that Carbonate and Bicarb values can be estimated, and Potassium ignored.

I have a value from when they provided this last year (there have been measured variances from last year on other values)  This was 25.42 mg/l as CaCO3, and Calcium 90.19 mg/l as CaCO3 (most values are slightly down on last year, only nitrate is up).

How big an issue is the missing Magnesium value?  Could I use last year’s figure and not end up way off with my additions/pH?

2

looks like you have what you need. magnesium not so important-that is unless you have a magnesium bomb and didnt know it…not likely BTW. Potassium not a big deal either. would have been nice to see your TDS and bicarb, but your CACO3 number is on low side. looks like you have some decent water base to brew with, unlike mine.

this is what I received on mine:

Results For :
    Sample ID :
    Location :
    KEN HARVEY
    pH
    8.0
    Total Dissolved Solids (TDS) Est, ppm
    283
    Electrical Conductivity, mmho/cm
    0.47
    Cations / Anions, me/L /
    5.45.3
    ppm
    Sodium, Na
    114
    Potassium, K
    2
    Calcium, Ca
    4
    Magnesium, Mg
    1
    Total Hardness, CaCO3
    14
    Nitrate, NO3-N
    0.1 (SAFE)
    Sulfate, SO4-S
    3
    Chloride, Cl
    3
    Carbonate, CO3
    6
    Bicarbonate, HCO3
    297
    Total Alkalinity, CaCO3
    253

3

also if you weren’t aware, you use the lower section of brunwateer to convert that calcium as CACO3 of 85ml/ppm to  the calcium portion - in your case its 34PPM calcium

4

You guys seem to have some pretty extreme water in some places.  What’s it like to drink?

5

. Yep, spotted that thanks.

6

perfectly good drinking water, no iron  to speak of, naturally soft and nothing bad except it is not so ideal for brewing due to total alkalinity… it is very difficult to drop PH with that.

7

The water company contacted me earlier, and provided the missing Magnesium value, 24.38 mg/L as CaCO3, so not terribly different to last year’s value.

8

Keep in mind that those values can vary throughout the year, or even month if you are unlucky like me.

9

Yep, I contact them every 4-6 months.  The variation hasn’t been huge on any of them.

10

My local water company report omitted several values I needed.  So, I paid to send a sample to Ward Labs and got their report which is more comprehensive.  Fortunately, my water is from wells that don’t vary much.