ADHS will be performing maintenance on the Medical Marijuana systems starting on Saturday, January 24, 2015 at 10 PM expected to be completed by Sunday, January 25, 2015 at 4 AM. During this time, Medical Marijuana Online Registry Applications will be unavailable. We apologize for the inconvenience this maintenance downtime may cause. If the process is completed earlier, the systems will be made available at an earlier time.

Environmental Toxicology Program

Well Water Quality

In Arizona, municipal and public water systems are monitored and regulated by the Arizona Department of Environmental Quality. You can also contact your water provider for water quality reports. However, if you get your water from a private well, there are some things you need to know.

Arsenic is a naturally occurring metal in soils and groundwater. Arsenic commonly occurs in Arizona at high background levels. Eating foods or drinking water with too much arsenic can cause health problems.

Note: Information provided in PDF files.