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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Don’t Be Surprised by Freezing Pipes
When the outside temperature drops, there is a chance your water pipes will freeze and break, potentially causing extensive property damage.
Take the following precautions to help prevent your pipes from freezing and possibly bursting:
Wrap all exterior pipes with insulation
Turn off any exterior water that you will not be using this winter
Drain any exterior lines you will not need to use, such as irrigation lines
Never leave home if your pipes are frozen, as a leak could have developed in your pipes and may not be detectable until after the pipes thaw. If you are planning to leave town when temperatures could dip into the freezing range, you may want to shut the water service off at your house. This could prevent flooding in your home (not to mention a large water bill) if a pipe freezes and breaks while you’re away.
If your house is equipped with fire sprinklers, consult with a fire protection professional before turning the water off!
Feel free to call AMWC if you have questions regarding freezing pipes.
Scam Alert!
Atascadero Mutual Water Company (AMWC) is warning to residents to be on the lookout for individuals impersonating AMWC employees and claiming that the company’s water is contaminated.
AMWC received multiple reports of one or more individuals claiming to be company employees to gain entry into residents’ homes to test the water.
The impersonators advised AMWC customers not to use water without treating it first, followed by trying to scare or pressure residents to install expensive water treatment equipment.
AMWC customers should verify the identity of any individuals claiming to be an AMWC employee, who can be recognized by the logo on their uniforms and their marked Atascadero Mutual Water Company vehicles.
Residents should not give out personal information such as their Social Security number, bank account numbers, or payment information to anyone who comes to your door or calls claiming to be from AMWC.
Any suspicious incidents should be reported immediately to AMWC at 805-466-2428 and the San Luis Obispo County Sheriff’s Office at 805-781-4540.
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.
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