Original sentence: A Subsurface dyke is a structure that is built in an aquifer with the intention of obstructing the natural flow of groundwater, thereby raising the groundwater level and increasing the amount of water stored in the aquifer.Appropriate technology methods, such as solar water disinfection, provide low-cost disinfection options for treatment of stored rainwater for drinking.Rainwater Harvesting is the gathering, or accumulating and storing, of rainwater.Up until 2009 in Colorado, water rights laws restricted rainwater harvesting; a property owner who captured rainwater was deemed to be stealing it from those who have rights to take water from the watershed
Edited sentence: A subsurface dyke is built in an aquifer to obstruct the natural flow of groundwater, thereby raising the groundwater level and increasing the amount of water stored in the aquifer.Rainwater harvesting is the gathering, or accumulating and storing, of rainwater.So-called "appropriate technology" methods, such as solar water disinfection, provide low-cost disinfection options for treatment of stored rainwater for drinking.Until 2009 in Colorado, water rights laws restricted rainwater harvesting; a property owner who captured rainwater was deemed to be stealing it from those who have rights to take water from the watershed