Is All Water the Same?

How water hardness, chlorine, and minerals affect your dough.

Is All Water the Same?
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Not All Water Is Created Equal

Your tap water contains minerals, chlorine, and other compounds that directly affect gluten development and yeast activity.

Chlorine: The Yeast Killer

Municipal water often contains chlorine to kill bacteria — but it can also slow down your yeast.

Fix: Let tap water sit uncovered for 30 minutes, or use a simple carbon filter. Chloramine (used in some cities) doesn't evaporate — you need a filter for that.

Water Hardness

  • Soft water (low minerals): Dough can be slack and sticky. Gluten forms easily but lacks structure.
  • Hard water (high minerals): Tightens the gluten. Dough is firmer, may need more hydration.
  • Medium (50-150 ppm): The sweet spot for most doughs.

Mineral Content That Matters

  • Calcium & Magnesium: Strengthen gluten structure
  • Iron: Can discolor dough and affect flavor
  • pH level: Slightly acidic water (pH 6-7) is ideal for yeast activity

Practical Advice

  • Filtered tap water works great for most people
  • Don't use distilled water — yeast needs some minerals
  • If your dough behaves differently in a new location, water is often the reason
  • Bottled spring water is a reliable consistent option
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