There are 3 ways you can pay your bill: 1. Payments can be sent by US mail or banking bill-pay to: S&T Mutual Water Co. PO Box 6391 Los Osos, CA 93412 2. Payments can also be placed in an envelope and dropped in the curbside drop-box located in the neighborhood at: 150 Monarch Ln Los Osos, CA 3. Payments can be made online or set up auto pay with credit card or Echeck: For Billing Payment Online make payment here: Online Payment Water bills consist of the sum of these charges: • A charge for water use billed according to the current rate structure • And any fines for late payment or long term un repaired water leaks