Who regulates sewer/sanitation services?

Sewer/Sanitation services are regulated by the Arizona Department of Environmental Quality. The address is 1200 W Washington Street, Phoenix, AZ 85007. The phone numbers are 602-542-4251 or 800-222-7000.

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1. Who regulates sewer/sanitation services?
2. Do drywells have regulations about maintenance?
3. What are the rules concerning septic systems?