There are over 500 wells pumping water from the same source — the Eastern San Joaquin Groundwater Sub-Basin. That includes municipal wells in Manteca, Ripon, Lathrop, Stockton, and Lodi as well as agricultural wells and domestic wells serving rural homes. You may consider that irrelevant information given water comes out of your tap when you turn the faucet on. But what local agencies are doing in the next few years to create a framework to manage the water basin to meet a pending state mandate requiring groundwater basin sustainability will impact how freely water flows and determine who gets how much water.