WQD | Public Water System
A "community water system" is one that serves 15 or more service connections used by year-round residents or that serves 25 or more year-round residents who use water for drinking, cooking, bathing and cleaning. Community water systems may also serve all the businesses and other water users within their boundaries.
A "non-transient, non-community water system" is one that serves 15 or more service connections that are used by the same persons for at least six months per year, or serves the same 25 or more persons for at least six months per year. These water systems supply businesses where people may spend a large percentage of time, but these typically aren't a consumer's primary water source. Examples include schools and hospitals.
A "transient, non-community water system" is one that serves 15 or more service connections, but does not serve 15 or more service connections that are used by the same persons for more than six months per year; or one that serves an average of at least 25 persons per day for at least 60 days per year, but does not serve the same 25 persons for more than six months per year. Examples include businesses where the average person will not be drinking the water for long periods of time, such as truck stops, restaurants or campgrounds. Because of the short exposure times involved, typically these systems only monitor for acute contaminants such as nitrates or bacteria.
An interactive map is provided by the Arizona Department of Water Resources, which can help you identify if your water comes from a regulated community public water system. Note that you may receive your drinking water from a non-community water system or an unregulated water system, which would not appear on this map | Access Map >
ADEQ also maintains the Safe Drinking Water Information System (SDWIS) database, which provides contact details, water quality results, and violations for all regulated public water systems in Arizona | Access Database >
Questions, comments, concerns and/or edits regarding SDWIS?
Contact a Compliance Assistance Coordinator (CAC) | View CAC List >
Community water systems are also required to provide annual consumer confidence reports to their customers. Consumer confidence reports contain information about water sources, water quality testing, and other issues. Please contact your public water system to obtain a copy of the most recent report.