Water and Sewer service charges are billed by the District on the first day of each month and are due by the last day of the month.  .  All monthly charges billed are the responsibility of the…

The District provides a variety of payment options for your convenience: automatic payment options, online bill pay, pay by mail and drop-off at our office.

The Mission of the Thermalito Water and Sewer District (TWSD) is to provide reliable, high quality water and sewer services while meeting customer demand, and to manage District resources in an open…