Rainwater from the roof is collected and funneled into a 25,000 gallon underground cistern . Wastewater from showers , sinks and toilets goes into underground purifying tanks and then into the cistern . The collected water then irrigates the land surrounding the house . Surrounding flowers and shrubs native to the area enable the property to blend into the surrounding rural landscape .
According to the above context, choose the best option to answer the following question.
Question: Why is rainwater being collected and moved into the cistern ?
Options:
- The facility is trying to commercialize rain water .
 - The facility is trying to be more wasteful with resources .
 - None of the above choices .
 - The facility is trying to be more environmentally responsible .


The facility is trying to be more environmentally responsible .