Atascadero Mutual Water Company
Serving the colony since 1913
Welcome
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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WATER MAIN FLUSHING (3/24/2025)
Crews will be in the following areas today performing main line flushing.
El Camino Real, Between 9600 - 10300
El Camino Real & Montecito Ave
Casa Bella Ct
Los Lomas Ave
El Camino Real & El Bordo Ave
El Camion Real & Musselman Dr
Customers may experience temporary reductions in water pressure, discolored, or cloudy water. These conditions are not a public threat and will subside after flushing is complete.
Additional Resources:
Flushing Information Flyer [PDF] Edited: 3/24/2025 10:00 AM
Scam Alert!
Atascadero Mutual Water Company (AMWC) is warning to residents to be on the lookout for individuals impersonating AMWC employees. See NOTICE [PDF] for complete information.
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!
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, 2023. 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]
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]
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.
Would we be able to reach you in the event of a service outage?
Please submit a Contact Information Update form [external link] to update your contact information and/or to specify your text notification preferences.