The recycling of treated municipal wastewater has become a significant part of California's water supply. The different water agencies in California were recycling over as of 2009, the date of the last survey. Some of the many uses for recycled water are: golf course irrigation 7%, landscape irrigation 17%, agricultural irrigation 37%, commercial reuse of water 7%, industrial uses 7%, geothermal energy production 1%, seawater intrusion barrier via fresh water injections 7%, groundwater recharge by well injection and flotation ponds 12%, recreational impoundments 4%, and natural wetland systems/restoration 4%. The stated goal is the recycling of of treated municipal wastewater.