2. Resubmittals go back to the original reviewer
A new reviewer finding new issues on a resubmittal was a common frustration. Resubmitted projects are now assigned to the original reviewer, who checks for code compliance only and refrains from comments that are not explicit code requirements, such as plan readability comments.
3. New Source Approvals no longer expire
New Source Approvals for new public water wells previously expired after one year, meaning many approvals expired before the well was ready to be activated. MCESD has discontinued expiration dates on New Source Approvals.
4. Permit Renewal Request Form
If your water ATC is nearing expiration, a permit renewal request form is available for extensions. This form can be filled out and submitted through Permit Center for a renewal request, notification of construction starting, and project cancellation for a streamlined process. Water permit holders also receive an automated email 30 days before expiration with instructions on how to extend.
Permit Renewal Request Form: Approval to Construct (ATC) Permit Action Request
5. Process Failure Notification Form
Use this form to tell MCESD about an unexpected treatment or process failure affecting a public water system, and the change you made to address it. Submitting it puts the corrective action on record before an inspection, helping avoid a violation for minor changes that would otherwise first come to MCESD attention during an inspection.
Process Failure Notification Form: Drinking Water Process Failure Notification Form
6. Wastewater treatment permitting requirements removed from the Environmental Health Code
Following the Enhanced Regulatory Outreach Program (EROP) process, the Board of Supervisors approved revisions to the Maricopa County Environmental Health Code on June 24, 2026. MCESD no longer reviews and approves wastewater treatment facilities, removing duplicative oversight, and ADEQ remains the regulatory authority over wastewater treatment plant standards. MCESD continues to review and approve onsite septic systems.
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