For new residents, sewer is billed based on the “City-Wide Average” consumption. After a resident’s services have been provided for a full December, January and February, sewer is billed based on the “Winter Average”, which is the average consumption over these three months. This average is billed each month from March through the following February, when a new “Winter Average” is calculated. The December, January and February time frame is used because these are historically the lowest water usage months. To save money, families who monitor and conserve water during this time frame can expect a lower sewer charge annually. Customers are also encouraged to check for water leaks to insure accurate water usage.