11/02/2026
📬 RECEIVED A BACKFLOW PREVENTION ASSEMBLY NOTICE?
Here’s what HAWASA customers need to know.
Installation is a RECOMMENDATION. HAWASA currently has no policy requiring installation or plans to enforce it.
🏠HAVE A SINGLE-FAMILY HOME?
If your home has NONE of the following, it is not considered high-risk under this program, and you may disregard these notices:
• A fire suppression sprinkler system
• An inground swimming pool
• A lawn or property irrigation system
📞 WANT THE LETTERS TO STOP?
Call 1-844-605-5213 and provide the unique Hazard ID number at the top of your letter. Explain that your property is a single-family home without any of the features listed above so the company can update its records.
You may also choose to take no action and disregard future notices if your home meets those criteria.
đź’§ WHICH PROPERTIES ARE CONSIDERED HIGH-RISK?
• Commercial properties
• Multi-unit residences
• Single-family homes with ANY of the three features listed above
Backflow prevention assemblies help protect the drinking water supply from contamination caused by reverse water flow. HAWASA recommends this protection but currently has no installation requirement or enforcement policy in place.
Questions about your notice or property classification? Call 1-844-605-5213. The local HAWASA office does not have access to the company’s property records and cannot update them.
Thank you for helping us keep our community informed!