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sredz 06-13-2013 11:23 PM

My Ward Report
 
I recently moved and sent a water sample into ward labs. The results donít look too promising. I think I can brew with this water if I dilute with RO at 50% and treat with acid. The magnesium seems really high- Even at 50% dilution Iíll have about 25ppm. Should I go all RO? I was hoping not to have to invest in an RO unit right off the bat but it may be the best option.

Hereís what Iím looking at (straight off the report):

pH 7.8
Total Dissolved Solids (TDS) Est, ppm 428
Electrical Conductivity, mmho/cm 0.71
Cations / Anions, me/L 8.0 / 8.2

Sodium, Na 22
Potassium, K 2
Calcium, Ca 59
Magnesium, Mg 49
Total Hardness, CaCO3 352
Nitrate, NO3-N < 0.1 (SAFE)
Sulfate, SO4-S 18
Chloride, Cl 38
Carbonate, CO3 < 1
Bicarbonate, HCO3 367
Total Alkalinity, CaCO3 301
Total Phosphorus, P 0.75
Total Iron, Fe 0.08

sredz 06-14-2013 02:44 PM

Expanding on my post above-

Iíve been working to understand how I may need to adjust my water based on my above water report. I thought it would be good to calculate my residual alkalinity based off the reported numbers. Iíve been using the Bruín Water spreadsheet, which has been very helpful. This calculates my RA at 234. However, I have a formula of RA = Alkalinity - (Ca/3.5 + Mg/7). When I plug my numbers into this, I come up with 277. For the water experts out there, is this formula correct? Just trying to determine what the actual RA is.
Iíll be brewing an American Wheat beer soon. If I dilute with 50% distilled water and use acidulated malt in mash and lactic acid in sparge water and add some CaCL2 Bruín Water is putting my PH at 5.4, alkalinity at 153 and So4/Cl ratio at .44. To me, the alkalinity still seems a bit high. Any thoughts on further adjustments would be appreciated, just trying to make sure Iím pointed in the right direction.

ajdelange 06-14-2013 03:37 PM

That formula is correct if Alkalinity, Ca and Mg are all in the same units but in a Ward Labs report they are not. Alkalinity is in ppm as CaCO3 and the metal ions are 'as the ion'. To use the formula you must convert the metal ions to ppm as CaCO3. For calcium: ppm as CaCO3 = 50*Ca/20 = 50*59/20 = 147.5. For magnesium: ppm as CaCO3 = 50*Mg/12.15 = 50*49/12.15 = 201.6. Note that the sum of these is approximately the total hardness and probably differs from it because the metals were determined by AAS and the total hardness by titration.

Putting these numbers into the formula you would have

RA = 301 - (147.5 + 201.6/2)/3.5 = 230

sredz 06-14-2013 04:26 PM

Thank you for your help clarifying this. I trust the spreadsheet, but like to try and understand the calculations behind it. This makes more sense.

After running some different scenarios through the Bruín Water spreadsheet, itís pretty clear that Iím going to have to invest in an RO unit. My hardness and alkalinity are just too high.

jbaysurfer 06-14-2013 04:34 PM

sredz, the spreadsheet has an area to do those "Ion concentration conversion calculations" on page one toward the bottom just in case you ever need to be able to do it without the help of AJ...which is invaluable btw. AJ and Mabrungard are my H20 heroes. Fixing my water fixed by beers. I brew much better since I started paying attention to it.

mabrungard 06-14-2013 04:34 PM

Well, those significant digits finally caught up with me. Sorry for the error.

Yes, the magnesium content of that water will make brewing good beer difficult. 50% dilution would be OK for a beer focused on bitterness, but a more substantial dilution is recommended for all other beers.

Yes, the alkalinity is crazy high and that requires neutralization. The dilution will help, but that diluted water will likely need acidification to bring the mash pH into a desirable range.

sredz 06-14-2013 05:40 PM

Thanks for the tip jbaysurfer, I didnít notice that on the spreadsheet. Iíll take another look at it. And thank you Martin for your input. Your spreadsheet and information youíve provided on brunwater has been a tremendous help. I reran some numbers with a 75% dilution in a ďyellow balanced profileĒ with a small amount of acid malt in mash, lactic acid in sparge water and some gypsum and calcium chloride. This seems much better for the American Wheat beer I will brew next. Looks like I need to start shopping for an RO unit. Buying water is going to get old.

jbaysurfer 06-14-2013 05:50 PM

Quote:

Originally Posted by sredz (Post 5275321)
Thanks for the tip jbaysurfer, I didnít notice that on the spreadsheet. Iíll take another look at it. And thank you Martin for your input. Your spreadsheet and information youíve provided on brunwater has been a tremendous help. I reran some numbers with a 75% dilution in a ďyellow balanced profileĒ with a small amount of acid malt in mash, lactic acid in sparge water and some gypsum and calcium chloride. This seems much better for the American Wheat beer I will brew next. Looks like I need to start shopping for an RO unit. Buying water is going to get old.

I'm in the same boat, but I just buy the water. 1.50 for 5g from my local water kiosk, so I spend an extra 3 bucks on a batch of beer. The RO process wastes a lot of water fwiw, so I figure the expense of an RO unit (other then the tiny undersink unit we have installed which doesn't quite produce 1G/hr) and the extra water, maintenance, filters, etc.... makes the "rent vs. own" equation a bit more balanced.

Bassman2003 06-14-2013 06:58 PM

I thought Milwaukee had good brewing water? :) You will be buying some water but dilution is the solution! jbay has some good pricing at $1.50 for 5 gallons. Maybe you can find a good source?

sredz 06-14-2013 07:34 PM

Quote:

Originally Posted by Bassman2003 (Post 5275564)
I thought Milwaukee had good brewing water? :) You will be buying some water but dilution is the solution! jbay has some good pricing at $1.50 for 5 gallons. Maybe you can find a good source?

We'll I'm actually outside of Milwaukee, so I don't have the good Lake Michigan water that they get. Mine comes from 3 different ground sources. I'll have to check our local Walmart to see what the pricing is on their RO water. $1.50 for 5 gallons seems like a great deal.


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