Fresh Off the Tank: Brewing With Hot Water


In my last Brewing piece I mentioned that, when sending water off to be analyzed, you should be sure to send the water you actually brew with.  If you run your brewing water off the "hot" tap, then send that in to be tested.

A few of you responded...aggressively.  The short version is that apparently some of you think I'm somewhere between a reckless libertine and a war criminal for brewing with water that came out of my water heater tank.  

Why So Heated?

I was confused by the intensity because I've never brewed with anything but pre-heated water from my water heater, and it doesn't seem to have hurt me, either in terms of how the beer is judged nor in the level of enjoyment I get out of it.

One individual was convinced I was essentially taking my life in my own hands.  [All caps his/hers, not mine] "YOU WOULDN'T FILL A POT WITH HOT WATER TO MAKE PASTA, WOULD YOU?"

UH OH.  Yes, yes I would.  And do.  A couple of times per week.  Should I not?

Have you ever noticed that if someone tells you something that seems totally at odds with what you've done your whole life, you can go one of two ways?  Some people lock into deflection/rejection mode and won't engage with it at all.  That's never been my MO, though - if I'm wrong, I want to know it, so I looked into it a little deeper.

Dangerous or Gross?

It seems like the arguments against run in one of two veins.

First, it could be the case that hot water leaches contaminants out of some kinds of pipes, adding things to your water that you shouldn't want to ingest (lead, primarily).  As far as I can tell this is a valid concern in older homes, and the American EPA as well as the CDC say that you should avoid it even in newer homes, since "lead-free" pipes can still contain as much as eight percent lead.  The Canadians don't seem as worried about this, but I can't find links to the studies that state they don't find any long-term risks from it (though popular articles on the topic reference them).  

Second, people who take a gander inside their hot water tanks note that they're pretty gross in there.  That's a less-compelling argument to me.  I filter, and my beer tastes pretty good.  Let's stick with the risk of lead in the water.  

I have to say that I'm torn.

On the one hand, it seems like a universal fact of life (which somehow I've missed) that we shouldn't be using hot water in any application that results in drinking it (be careful what you get into that shower beer).  On the other hand, the risk seems very small.  I don't live in a particularly old home, I use a municipal water service that regularly checks for lead, and it seems as though the risk to adults is far less than the risk to children (I'm already about as screwed up as I'm likely to get, apparently, though this picture suggests that's not exactly a small amount).


On the other hand, though, what's the harm in taking a little extra water heating time to mitigate even a minor risk?

A Compromise

I settled on a compromise. 

I generally divide my water into two batches (like most of you) - mash water and sparge water.  It's really in my mash water that I'm looking to save time, since that's at the top of my brewing process.  The sparge water I heat while I'm mashing.

Up to this point, I've drawn 100% of my mash water from the hot tap (carbon-filtered, but that isn't likely to make a difference if there's a lot of lead), and a 50-50 hot-cold blend for my sparge water (just to fill up the water bucket quickly).  

It seems as though the risk (such as it is) is elevated in water that's been standing in the pipes for a while.  So, for my mash water I'm going to start running the hot for five minutes prior to filling the mash water bucket, to at least get fresh hot water.

Then, I'll use only cold for my sparge water draw, since it can take some extra time to heat while I'm mashing.

Sound reasonable?

Thank you, sincerely, to those who brought this to my attention, particularly to the medical risks.  Prior to this I've only ever been confronted with, "oh, it's too minerally, so it'll screw up the flavor of your beer," to which I've always responded, "well, it hasn't hurt it yet..."  The lead concerns seem legit (if small in magnitude), and I'm grateful for those who brought it up.

Keep it simple.


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Water for Dummies: A Simple Approach to Brewing Water


When it comes to water, it's been my experience that brewers spend far too much time and effort tinkering with it - or, paradoxically, they're terrified of it.  Neither of those are productive. 

Bad water can really wreck your beer - but most water isn't bad. 

Water chemistry is complicated - but we don't need to understand the chemistry to get what we want out of our brewing water.

My point is that for most brewers, the water they're using is probably fine - or could be, with one or two small (and consistent) adjustments.  One approach - the Beer Simple approach, for sure - is to identify a couple of rules-of-thumb for your own brewing rather than approaching every recipe as a new opportunity to tinker with your water.

Today at BS we'll be talking about a strategy for getting your water in good shape (and maybe coming to realize that it's already in good enough shape).  This is for non-chemists, particularly because I'm definitely not a chemist.  I'm also not going to be delving into how to adjust your water - this is about identifying a path to water independence.  

Understanding your brewing water for just a few minutes can set you up for the rest of your homebrewing life.

Don't Chase a Problem

Let's get the cliches out of the way first, shall we?

If your water tastes good to drink, it'll probably make good beer.

There.  Done.  Don't go chasing a problem.  If you're not noticing a consistent deficiency in water flavor or finished beer flavor, then maybe just ignore your water chemistry until such time as you've ironed out every other aspect of your brewing life.  If your water tastes good, then there are almost certainly far more substantively significant things for you to address: recipe formulation, ingredient storage, mash/boil/fermentation processes, yeast health and more are far more likely to have noticeable effects on your beer than your water.

Three Steps to Water Independence

Let's say you have noticeably troubling water and/or you're confident that the rest of your process is sound.  That still doesn't mean you need to enroll in night classes in chemistry or geology to be "water competent."  Most brewers will be fine with three steps.

First, you need to know what's in your water.  There are lots of testing kits out there, and you might get some solid info from municipal water reports, but for my time and money there's nothing better than Ward Labs' brewing water report (note: not a paid endorsement - it's just fast and easy and affordable).  They'll send you a container.  You put your brewing water in it and send it back.  They e-mail you a PDF of a report with the relevant brewing info/ions listed.  Done.  But be sure you're sending your brewing water.  If you filter, filter it.  If you use hot water, send water from the hot side of the tap.  Send the water you'll be using to brew.

Second, you need to know what your report means in terms of brewing.  Note that I didn't say you need to know what it means in terms of the water.  I have a good understanding of technical terms like residual alkalinity and pH and anions v. cations - but I didn't when I first made my water adjustments.  Grab your copy of How to Brew and flip to the section on water - you'll find a set of nomographs to get you in the ballpark on a range of beers that are good for your water, and some basic instructions on how to adjust for other styles.  It's not the only one - BeerSmith, Bru'n Water, and other calculators/tools are out there, too.  What I love about How to Brew is that it's possible to use those nomographs to figure out your water's potential and shortcomings even if you don't understand the chemistry behind it.  Maybe enlist the help of one of your water-nerdy friends to be sure, but you'll end up with the answer to two questions: What can I brew without adjustment, and what styles need adjustments?

Third, and last, you need to know how to adjust your water chemistry.  This doesn't need to be complicated.  First, there's likely a range of beers you can brew without any adjustment at all. And when you do need to make some changes, most of the time we're just talking about a small addition of acid or some mineral/salt.  Some with particularly hard water might need to dilute instead.  You don't need to dial in, exactly, every single beer.  Most will fall into broad categories.  What adjustment, based on color?  What adjustment for hoppy beers?  What adjustment for Czech lagers?  Focus on the practical side of things and you can forget everything you ever knew about chemistry.

And that's it.  Figure out what's in your water.  Figure out what you don't need to adjust and what you do, and then work up a handful of cheats for yourself.  This isn't something you have to delve into with every new recipe. 

Water Doesn't Have to be Hard

For me?  Two adjustments.  Pale beers get a quarter teaspoon of gypsum to bump up my sulfate-to-chloride ratio and accentuate hop bitterness.  Dark beers get a quarter teaspoon of baking soda to keep the mash from going too acidic and add roundness to the malt flavors.  Everything else is as-is, with the exception of anything Plzen-originated, which gets a dilution with distilled water.  That's it.

Water doesn't have to be hard (pun intended).  I know why I do these things - but I didn't when I started, and I don't need to know now.  The mash doesn't know if I understand what the sodium bicarb is doing.

Can you get better results by minutely controlling additions and adjustments with every batch, emulating specific brewing centers and using specific adjustments to yield precise flavors?  Sure.  Probably.  But is it worth it?  

It might be, if you've covered everything else, and you care that much, and you enjoy the minutiae of the brewing process.  But if you're more of a "Relax, Don't Worry, Have a Homebrew" type but still want to do some water adjustment, it's possible to do so without jumping into the chemistry deep end with every batch.  

Keep it simple.


Please help support BEER SIMPLE by visiting the Support page and saving the links there as your bookmarks, especially this Amazon link!  Every dollar you spend will help keep BS coming your way, and more often (which is at least as much a threat as a promise).