Why is there a higher charge for high usage when there wasn’t a drought this year?

Why is there a higher charge for high usage when there wasn’t a drought this year?

Many people mistakenly believe that higher rates for high use is related to drought. In reality, the purpose of water use efficiency (with or without drought) is to implement effective use of water. To discourage the overuse of water, a higher rate is applied for water used in excess of normal consumption standards.