But if you live in a place where it mainly rains in the winter time and most of the water demand is in the summertime, it's not a very cost-effective way to solve a water problem.
Tapi bila Anda tinggal di tempat dimana hujan banyak turun di musim dingin sementara air sangat dibutuhkan di musim panas, ide itu tidak hemat biaya untuk menyelesaikan masalah air.