Most of us keep an eye on the numbers that matter. Blood pressure. Steps. How many weeks of food are on the shelf. How many days the generator will run.
But there’s one number almost nobody checks, and it may matter as much as any of them. It’s the water you drink every single day.
Not the water you’ve stored for an emergency. We’ve covered that plenty. We mean the glass you fill at the kitchen tap this afternoon. Is it clean? Do you trust it? And are you drinking enough of it?
Those three questions make up what we call a water audit. It takes about 10 minutes, it costs nothing, and the research says it could have a real bearing on how well you age. Let’s walk through it.
Staying Hydrated May Slow Down Aging
For years, the advice was simple. Drink water, you’ll feel better. Now there’s evidence it goes further than that.
In 2023, researchers at the National Institutes of Health published a study that followed 11,255 adults for 30 years. They used a simple blood test, serum sodium, as a marker for how well hydrated people were over the long haul. When you don’t drink enough, sodium in the blood creeps up.
Here’s what they found. Adults whose sodium sat above 142 mEq/L (still inside the “normal” range) had up to a 64% higher risk of developing chronic diseases like heart failure, stroke, diabetes and dementia. They were also more likely to be biologically older than their actual age. And those at the top of the range had a 21% higher risk of dying early.
The sweet spot was 138 to 140. In other words, the people who stayed well hydrated for decades aged better than the people who didn’t.
Now, a word of balance. This doesn’t mean “drink as much as you can.” Overdoing it can push sodium too low, which is dangerous in its own way. The lesson is steady, consistent access to enough clean water across a lifetime. That’s a preparedness mindset if we’ve ever heard one.
Why This Matters More as We Age
As we get older, our sense of thirst fades. Our kidneys don’t work as efficiently as they once did. Some of the medications many of us take pull water out of the body. And when we’re less active, thirst doesn’t build the way it used to.
So the people who benefit most from good hydration are often the ones least likely to feel thirsty. That’s exactly why a quick check-in like this one is worth doing.
The 10-Minute Water Audit
Grab a glass of your tap water and sit down with it. You’re going to answer three questions.
Question 1: Do You Know What’s In Your Water?
Here’s a rule we repeat in every water class: clear water is not the same thing as clean water. Bacteria, heavy metals like lead, PFAS “forever chemicals,” pesticides, pharmaceuticals and microplastics are all invisible in a glass.
And the standards that are supposed to protect you don’t always keep up. The Environmental Working Group says there are no federal limits on roughly half the contaminants found in drinking water. As one of their analysts put it, “Legal does not necessarily equal safe.”
The good news is you don’t have to guess. If you’re on a public water system, your utility is required to publish a water quality report (sometimes called a Consumer Confidence Report) every year. Many mail it with your bill. You can also find yours on the Environmental Protection Agency’s website by searching “EPA Consumer Confidence Report” and entering your ZIP code. Look for anything flagged as a violation, and note which contaminants showed up even at “acceptable” levels.
If you’re on a private well, no one is checking for you. The Centers for Disease Control recommends testing well water at least once a year for coliform bacteria, nitrates, total dissolved solids and pH. Your county health department can usually point you to a certified lab, and some offer free test kits.
Either way, write down what you find. That list is what you’ll use in a minute to pick the right filter.
Want to go deeper on this? We’ve written about it before in What's Lurking in Your Tap Water? and Where Does Your State Rank in Water Quality?
Question 2: Do You Actually Like Drinking It?
This one sounds too simple to matter. It isn’t.
If your tap water tastes like a swimming pool, or you just don’t trust what’s coming out of the faucet, you won’t drink it. You’ll reach for coffee, soda or juice instead. Or you’ll buy case after case of bottled water, which costs a fortune, fills the recycling bin, and often turns out to be filtered tap water with more microplastics than what you started with.
Take a sip of that glass you poured. Be honest. Would you choose this over a soda?
If the answer is no, that’s not a character flaw. It’s a problem with the water, and it’s fixable. Cleaner water tastes better, and when water tastes better, you drink more of it. A good filter does more for your daily water intake than any amount of willpower.
A couple of quick fixes while you’re at it. If a tap hasn’t been used in a few hours, let the cold water run for a minute or two before you fill your glass. Water that sits in old pipes picks up whatever is in them. And always draw drinking and cooking water from the cold side, since hot water dissolves metals and sediment more easily. If you want a little flavor, drop in a few slices of lemon, cucumber or a sprig of mint. It’s a lot better for you than what’s in a can.
Question 3: Are You Drinking Enough?
You’ve heard “eight glasses a day” your whole life. The truth is, there’s nothing magic about that number.
How much you need depends on your size, your activity, the weather, your health and the medications you take. The Academy of Nutrition and Dietetics puts the daily total at roughly 11.5 cups for women and 15.5 cups for men. That includes the water in your food and in other drinks, so you don’t need to be filling a dozen glasses. But for most of us, it’s more than we’re getting.
Here’s the simplest gauge there is: check the color. Pale yellow means you’re in good shape. Dark yellow means drink up.
And keep an eye out for the early signs of dehydration, especially in hot weather or during an emergency when the air conditioning is off and stress is high:
- Dark urine
- Dizziness or lightheadedness
- Dry mouth, lips and tongue
- Muscle cramps
- Tiredness, weakness or apathy
- Confusion
A few habits make this easy. Drink a glass first thing in the morning and another before each meal. Keep a bottle within arm’s reach when you’re out. And if you don’t like the taste, see Question 2.
For more on this, read How Much Water Should You Really Drink Every Day.
Now, Do Something With Your Answers
If you answered yes to all three, well done. You’re in better shape than most of the country. Keep that water report handy and re-check it when next year’s arrives.
If you answered no to any of them, notice that the fix is usually the same. The water coming out of your tap needs to be filtered before it goes in your glass.
This is where that contaminant list from Question 1 earns its keep, because not all filters are created equal. Some are built to improve taste and smell and not much else. The way to tell what a filter actually does is to look for NSF certification. NSF is the independent organization that sets the standard for water filtration, and there are three certifications that matter most:
- NSF 42 covers taste and odor: chlorine, chloramine, iron, manganese and zinc, among others.
- NSF 53 covers the health-related contaminants, with more than 50 reduction claims including lead, cryptosporidium, VOCs, PFOA, PFOS and chromium.
- NSF 401 covers emerging contaminants like prescription and over-the-counter drugs, herbicides, pesticides and other chemical compounds.
Match the certification to what showed up in your report. A filter that’s certified for taste and odor only won’t touch the lead in an old pipe.
The Filter We Use Every Day
The Patriot Pure Ultimate Water Filtration System with Nanomesh filters was built for exactly this. The Nanomesh filters are certified to NSF 42, 53 and 401 when used with the system, so one filter covers all three categories above. It sits on your counter, holds enough for the whole household, and it’s gravity-fed, so it works the same whether the power is on or off.
That last part is why we recommend using it every day rather than packing it away for an emergency. You get cleaner, better-tasting water starting now, which takes care of Questions 1 and 2 and makes Question 3 a whole lot easier. And when the day comes that you need it, you already know exactly how it works. For the setup walkthrough, see How to Set Up Your Ultimate Water Filtration System.
Your 10 Minutes Starts Now
Here’s the whole audit on one card:
- Look up your water report (or schedule a well test) and write down what’s in your water.
- Taste your tap water and admit whether you’d choose it over a soda.
- Check the color and drink a glass of water right now, before you finish reading.
Then match a filter to what you found. That’s it. Ten minutes, no gadgets, no app, and you’ve just done more for your long-term health than most people do in a year.
Water is the cheapest, simplest piece of preparedness there is. It’s also the one you use every day. Treat it that way.
Want more? Our Preparedness Consultants teach free water filtration, storage and catchment classes at 4Patriots University. And if you’re ready to tackle your emergency supply next, start with 1 Gallon or 3? How Much Daily Water Do You Really Need in an Emergency?
