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Water

Water is 98% of your coffee — and a real health topic. Testing, filtration, RO, and what’s actually in your tap or well.

Water

Water Hardness and Espresso: Do You Need Filtered Water?

Short answer: if your tap water is hard, yes — soften or filter it, or your espresso machine will scale up and your shots will taste flat. Here's how to test your water in five minutes, the exact hardness numbers to aim for, and what to actually buy.

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Water

Is Bottled Water Better for Coffee?

Usually, no. For most people, filtered tap water makes better coffee than random bottled water, while RO water with the right minerals added back is the most consistent option if your tap water is bad.

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Water

Arsenic in Well Water: What Actually Removes It (and the RO 'Certifications' That Mislead You)

A real well test came back at 78 ppb arsenic — nearly 8x the EPA limit. Here's what actually removes arsenic from well water, why most 'arsenic-certified' RO claims are misleading, and the treatment train that works.

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Water

Does Water Really Matter for Coffee? (Yes — It's 98% of Your Cup)

Coffee is over 98% water, yet most people obsess over beans and grinders while ignoring the biggest variable. Here's what actually matters — TDS, hardness, minerals — and how to fix it.

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Water

How Often Should You Test Your Well Water? (The Honest Schedule)

If you're on a private well, nobody tests your water but you. Here's the honest testing schedule — what to check annually, what to check once, and what triggers an immediate test.

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Water

How to Test Your Home Water for Coffee (Cheap Tests vs. Lab Tests)

You can't fix water you haven't measured. Here's how to test your tap water for coffee — from a $15 TDS meter to a full lab report — and what every number actually means.

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Water

Is Your City Tap Water Actually Safe to Drink? (What 'Meets EPA Standards' Really Means)

Your city water can be 100% legal and still not safe. Here's what's really in US municipal tap water — PFAS, lead, disinfection byproducts — and why 'meets EPA standards' isn't the same as safe.

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Water

Well Water vs. City Water: Which Is Actually Safer?

Well water vs. city water — which is safer to drink? The honest answer: they carry different risks, and neither is safe by default. Here's what each is prone to, and why both need testing.

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Water

What's Really in Your Tap Water? (A Plain-English Contaminant Guide)

From chlorine and lead to PFAS and nitrates — here's a plain-English guide to what's actually in US tap water, which contaminants matter, and how to find out what's in yours.

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