Living water or Broken Cisterns

So what is a cistern? Cisterns are a substitute for clean running water. Ancient cisterns were a necessary survival tool, peppered throughout all throughout Israel, the most impressive of which are in desert regions like the fortress of Masada. The problem with cisterns is that they leak, losing all that precious rainwater. If you have a really good cistern and it doesn’t leak you will have problems of stagnation.