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Is chlorinated tap water okay for wudu?

Water running from kitchen tap
Photo: Fourteenzerozero, CC0 via Wikimedia Commons

Yes, chlorinated tap water is fine for wudu and ghusl. Water treated with chlorine, fluoride or similar additives is still plain water in the eyes of scholars. The small amounts used to make it safe do not change its nature, so it remains valid for purification.

Why it is valid

The Quran calls water that falls from the sky pure and purifying:

وَأَنزَلْنَا مِنَ ٱلسَّمَآءِ مَآءً طَهُورًا "...and We send down pure rain from the sky." Quran 25:48

When people asked the Prophet ﷺ about the well of Buda'ah, into which dirty items were thrown, he replied: "Water is pure and is not defiled by anything" (Sunan Abi Dawud 66). Scholars explain that water stays pure unless an impurity changes its colour, taste or smell. Chlorine added at a very small dose does not make tap water something else; it is still called water.

The same reasoning applies to seawater and pool water, which are also valid. See Can I make wudu with seawater or pool water?

Common questions about tap water

  • Chlorine or fluoride smell: fine. The smell comes from a safe treatment, not from impurity.
  • Hot water from a boiler or kettle: fine, as long as it is not so hot that it hurts.
  • Hard, filtered or softened water: fine. Minerals or filters do not spoil it.
  • Bottled water, mineral water and sparkling water: fine for wudu, though it is a waste of money.
  • Slightly cloudy or rusty water from old pipes: scholars say a change caused by clean things that are hard to avoid, such as sediment or minerals, does not spoil the water. If it looks unsafe, let the tap run first.

When water would not be suitable

Water is not valid for purification if something impure has mixed with it and clearly changed it, such as sewage. Water that has been mixed with so much soap, juice or another substance that it is no longer simply called water also loses its status. Ordinary treated tap water is nothing like this.

If the water is too cold or hot to use safely, or it truly harms your skin, Islam gives you an easier option. See Can I do tayammum when the water is too cold? For skin conditions like eczema, speak to your doctor and a local imam about the best way to make wudu.

Saving water

Valid does not mean unlimited. Islam teaches us not to waste water, so keep the tap on low and turn it off between steps. See How much water should I use for wudu?

Key points
  • Chlorinated and fluoridated tap water is valid for wudu and ghusl.
  • Pure water stays pure unless an impurity changes its colour, taste or smell (Sunan Abi Dawud 66).
  • Hot, filtered, softened and bottled water are all fine.
  • Do not waste water, even when it is allowed.
Tip: If chlorine dries out your skin, use lukewarm water and a gentle moisturiser after wudu. Your wudu stays valid, and your hands stay comfortable.

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