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Old 09-11-2008, 04:18 PM   #1
jcole
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Sep 2008
Austin, Texas
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Does anyone have a profile for the tap water in Austin, Texas?

Or know where you can find such information?

Thanks,
John

 
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Old 09-11-2008, 04:26 PM   #2
damrass
 
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I would try contacting the utility company that supplies the tap water. I think around here they send us one every 6 months.
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Old 09-11-2008, 04:50 PM   #3
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Call the utility dept and they should send it to you.

In Pflugerville our profile includes everything needed for brewing. Basically the water is almost unusable. I dilute it 2:1 for most beers with RO water and still add gypsum or calcium chloride and 5.2 buffer to adjust the mash pH, and I add 3mL of phosphoric acid to my sparge water. Depending on the ratio of surface water to Edward's water in your mix, it may require more or less treatment than mine does.
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Old 09-11-2008, 06:09 PM   #4
jcole
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Sep 2008
Austin, Texas
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Found it on: City of Austin - Austin Water Utility - Current Water Quality Reports

Water Quality Summary: 2nd Quarter Averages
(April 1, 2008 to June 30, 2008) (20 KB PDF)
http://www.ci.austin.tx.us/water/downloads/wqs_2q08.pdf

Anyone care to help me make sense of it?

Thanks,
John

 
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Old 09-11-2008, 06:50 PM   #5
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It's missing the bicarbonates. You need to know the ppm of bicarbonates, it's the most important number. If you call them up and ask they might have that info handy. Otherwise you will need to send a sample to a lab for analysis to be exact.

What I do is dilute to get below 150ppm bicarbonates (or less if I'm doing a blonde style which requires softer water), and then add enough calcium to get on the left side of the scale in Palmer's How To Brew.

http://www.howtobrew.com/images/f81.gif
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Old 09-11-2008, 07:16 PM   #6
jcole
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Austin, Texas
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Ok, thanks. I'll see what I can find and post back.

 
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Old 09-11-2008, 08:31 PM   #7
jcole
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Austin, Texas
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Just heard back from them.

The average level of bicarbonates in the City of Austin tap water is 30 ppm.

John

 
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Old 09-11-2008, 09:16 PM   #8
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That seems really low but is believable if the water is surface water. If that is the case you are good to go and you can probably use your water as-is, you may want to use 5.2 buffer but that would be all required...
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Old 09-11-2008, 09:42 PM   #9
jcole
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Austin, Texas
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5.2 buffer?

 
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Old 09-11-2008, 09:55 PM   #10
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Five Star 5.2 pH stabilizer. Only needed if you are doing all-grain. Good water is still essential for PM or extract though, and is often overlooked...
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