Collecting and re-using rainwater from gutters and downspouts for lawns and gardens minimizes the amount of water flowing into your storm drains, sewer systems and local waterways. Plants and microbes prefer rainwater because it is naturally "soft" and free of chlorine, fluoride and other chemicals. Millions of pounds of pesticides are applied to lawns each year, contaminating storm water runoff. These chemicals are a primary source of pollution. Rainwater collection minimizes this runoff, reducing the flow of harmful pollutants into local waterways. Rainwater collection is gaining momentum among concerned citizens and government entities. Many cities, counties and states across the country are encouraging rainwater collection through installation assistance programs, tax credits and other financial incentives.