You spend $50 on beans. $500 on a grinder. But your tap water is destroying both. Here’s what Emmit Jones Koffee wants you to know about H₂O.

1. The Most Expensive Mistake You’re Making

Let’s do quick math.

• Specialty beans: $20–40 per bag
• Grinder: $200–1000
• Kettle, scale, dripper: $150
• Water you use: $0.004 per gallon

You’re spending hundreds on coffee gear. Then you ruin it with the cheapest ingredient in your kitchen.

At Emmit Jones Koffee, we’ve cupped the same bean side by side with four different waters. The difference wasn’t subtle. It was night and day. And no, bottled water isn’t automatically the answer.

2. What’s Actually in Your Water (Systematic Breakdown)

Good coffee water needs three things: minerals for extraction, nothing for flavor, and the right pH. Here’s what each component does:

Mineral / Ion	Role in Coffee	Too Little	Too Much
Calcium (Ca2+)	Extracts body and creaminess	Thin, watery	Chalky, dull
Magnesium (Mg2+)	Extracts fruity, acidic notes	Flat, no brightness	Bitter, harsh
Bicarbonate (HCO3-)	Buffers acidity	Sharp, sour	Muted, lifeless
Sodium (Na+)	Soften perception	No effect (fine)	Salty (obvious)
Chlorine	Sterilizer (bad)	None needed	Medicinal, bleach-like

The Goldilocks Zone (SCAA Standard):

• Total Dissolved Solids (TDS): 75–250 ppm
• Hardness: 50–175 ppm CaCO₃
• Alkalinity: 40–75 ppm
• pH: 6.5–7.5

3. The Four Water Profiles (Tested by Emmit Jones Lab)

We brewed the same Indonesian natural process bean with four water types. Here are the results:

Water Type TDS (ppm) Taste Result Verdict
Tap water (average US) 200-400 Muddy, bitter, chlorine finish ❌ Avoid
Distilled water 0 Hollow, sharp, lifeless ❌ Avoid
Generic bottled (e.g., Aquafina, Dasani) 20-50 Flat, slightly metallic ⚠️ Acceptable but boring
Third wave water (mineral packet) 150 Balanced, sweet, clear ✅ Ideal
Emmit Jones Custom Blend (recipe below) 130 Bright, juicy, complex body ✅ Best value
Distilled water + a pinch of baking soda and Epsom salt beats 90% of bottled waters. Cost? About $0.10 per gallon.

4. The Emmit Jones Systematic Water Recipe

Stop guessing. Here’s a tested formula you can make at home in 5 minutes.

Ingredients:

• 1 gallon (3.8L) distilled or reverse osmosis water
• 1.5g Epsom salt (magnesium sulfate)
• 0.5g baking soda (sodium bicarbonate)

Instructions:

1. Dissolve Epsom salt in a small cup of warm distilled water.
2. Dissolve baking soda separately in another small cup.
3. Pour both into the gallon jug.
4. Shake vigorously for 30 seconds.
5. Let rest for 1 hour before brewing.

Result: ~130 TDS, 70 ppm hardness, 45 ppm alkalinity. Perfect for light to medium roasts.

For dark roasts only: Reduce baking soda to 0.3g (less buffer, more acidity to cut through roast notes).

5. The “Bad Water” Diagnosis (Quick Self-Check)

Brew a cup the way you normally do. Then taste it against this chart:

Problem	Likely Culprit	Easy Fix
Coffee tastes sour and bitter at sime time	High chlorine or variable TDS	Use carbon filter (Brita)
No flavor at all, just brown water	Too soft (low TDS)	Add 0.5 Epsom salt per gallon
Chalky, dry mouthfeel	Too hard (high calcium)	Dilute 50/50 with distilled
Metallic aftertaste	High iron or copper	Use bottled or RO water
Flat but no defects	Low alkanity	Add 0.2 baking soda

6. What Emmit Jones Uses (Transparency)

• Source: Local RO water with remineralization
• Target TDS: 140 ppm
• Target pH: 6.8
• Adjustment: Custom mineral blend (magnesium + calcium + potassium)

Because a $50 bean deserves $0.10 of proper water.

7. The One Upgrade You Haven’t Made

You’ve upgraded your grinder. Your kettle. Your scale.

Now upgrade your water.

An under-sink reverse osmosis system costs $150–300. A countertop distilled water maker costs $80. A bag of Third Wave Water minerals costs $20 for 60 gallons.

That’s cheaper than one bag of mediocre beans. And it transforms every bag you’ll ever brew.

☕ Final Roast

Great coffee isn’t made. It’s extracted. And extraction happens in water. Fix your water. Fix your coffee.

[Buy Roasted Coffee From Emmit Jones Koffee Now]