Houston officials lift an order for more than 20 million people to boil their drinking water.

credit by: the hill

The boil was ordered after a power failure at the purification plant caused a pressure drop.

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Schools and businesses were closed because of Sunday's order.

credit by:the guardian

The city rescinded the order shortly before 7 a.m. Tuesday.

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The Texas Commission examined the quality of the water and declared the water to be potable.

credit by: the hill

The transformer were down, electricity could not be supplied to the plant.

credit by: houston chronicle

Due to this, there was a deterioration in the quality of water.

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Houston officials praised people's patience and thanked the people.

credit by: abc news