Atascadero Mutual Water Company (AMWC) serves over 30,000 residents of Atascadero, with over 10,000 service connections. Our mission is to provide our shareholders with a continuous, safe, and reliable supply of water at a reasonable cost, while providing the highest level of customer service.


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Frozen Pipes

When the outside temperature drops, there is a chance your water pipes will freeze and break, potentially causing extensive property damage. Taking the necessary precautions can help prevent frozen water pipes.

Remote Meetings

To reduce the risk of exposure to COVID-19 to the public and our staff, meetings will be held remotely until further notice.

Arrangements have been made to ensure the meetings can be attended by the public via Zoom. Registration links for each remote meeting will be provided in the calendar section on the AMWC homepage.

The April 14th meeting has been moved to April 8th. Registered attendees will recieve an email with updated webinar credentials 1 hour before the meeting begins.

Coronavirus and Drinking Water

The COVID-19 virus has not been detected in drinking-water supplies. Based on current evidence, the risk to water supplies is low. Customers can continue to use and drink water from their tap as usual. Click here to learn more.

Paperless Billing Option

AMWC now has a paperless billing option for customers who don’t wish to receive a paper bill, and/or who wish to avoid the $1.00/month fee for duplicate bill service.  After enrolling, you will receive an e-mail notification when your bill is available for viewing each month.

Annual Financial Newsletter

Click here [PDF] to view AMWC’s Annual Financial Newsletter.

PFAS Water Contamination

On May 21, 2019, Atascadero Mutual Water Company (AMWC) received the results of water samples that were analyzed for polyfluoroalkyl substances (PFAS) under the EPA's Unregulated Contaminant Rule. Click here for the latest information [PDF]

Annual Water Quality Report (CCR)

We are pleased to present our annual water quality report covering all testing performed between January 1 and December 31, 2019. AMWC is dedicated to producing drinking water that meets all state and federal standards. We are committed to meeting the state's water source protection, water conservation, and community education goals, and serving the needs of all of our water users. Click here to view report [PDF]

Update Contact Information & Automatic Notification Preference

Would AMWC be able to reach you regarding important information about your water service?

Please update your contact information here and specify your options for receiving automatic notifications. Notifications can alert customers in the event of boil water alerts, Shut-Off Notifications, disruption in service due to emergency or planned shutdowns, unusually high water usage, etc.

Rate Survey

Each year, AMWC performs a survey of the water rates [PDF] used by other water purveyors in San Luis Obispo County.  The average monthly water use for a single-family residence in AMWC’s service area is used for comparison.  The actual average monthly use in other water purveyor’s service areas varies due to costs and/or other conditions.

Water Meter 101

Wondering how to read your meter or detect a leak? Check out our Consumer Info page to learn about meters, leaks, and more!


8:00 AM - 4:00 PM, Mon - FRI

Email response during business hours only

Emergency Only After-HourS  

(805) 466-9004

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