Water rates and tariffs for regulated systems are set by the California Public Utilities Commission (CPUC). The rates and tariffs listed in these documents are the most current adopted by the CPUC. Select your district to see a list of documents related to your district (or visit the Find my District page if you don’t know what district you are in).
Service area maps (SAMs) are included in the list of tariffs. A district or system’s SAM shows the service area’s boundaries and their relationship to nearby cities, highways, and other reference points.
Willows
- Residential Metered Service WIL (5/1/2024)
- Non-Residential Metered Service WIL (5/1/2024)
SERVICE AREA MAP
- Willows SAM (3/2/2024)
- Willows SAM (9/7/2024)
All Regulated Systems
- Schedule ED-1 - Service to Company Employees (8/21/1996)
- Schedule No FF - Fire Flow Testing Charge and Form (1/1/2011)
- Schedule 9-CM - Construction and Temporary Metered Service (11/1/2017)
- Schedule 14.1 - Water Shortage Contingency Plan (7/14/2021)
- List of Contracts and Deviations (5/1/2022)
- Schedule UF - California Public Utilities Commission Fee (1/1/2024)
- Schedule AA-4 - Private Fire Protection (5/1/2024)
- Schedule CAP - Customer Assistance Program CAP (5/1/2024)
- Schedule RSF - Rate Support Fund (5/1/2024)
- Schedule AS - Additional Surcharges and Surcredits (5/31/2024)
- Schedule AS - Additional Surcharges and Surcredits (10/1/2024)
Advice Letter
Advice letters are informal requests to the California Public Utilities Commission (CPUC) seeking approval or authorization.
Explore Advice Letter
Infrastructure Improvement Plans
This page is designed to share helpful information on our 2024 Infrastructure Improvement Plan to continue provide safe and clean drinking water.
Discover Infrastructure Improvement Plans