Water base charges are a flat monthly fee that covers fixed costs of providing services that do not change with water usage. These are items such as management, administration, customer service and the cost of our operations contractor. Water usage is billed based on actual use per thousand gallons that goes through your meter monthly. This volume is read each month from your meter. The sewer charges are fees used to pay the third party for sewer treatment. Cottonwood does not have their own Wastewater Treatment Plant and must contract out services for that service. Click here to read about your bill.