Engineering design reviews are performed as part of the approval process for projects that involve the
construction of or modification to water, wastewater or reclaimed water facilities or systems. See the
Project Approvals page for additional details regarding approval
requirements for these types of projects.
The purpose of an engineering design review is to validate that the design of a project complies with
all relevant codes and appropriate design standards. Water, wastewater and reclaimed water facilities
and systems are governed by a number of rules and regulations. See the Rules and
Regulations page for a summary of the applicable rules and regulations. The rules and regulations
directly impact the engineering design, operations and maintenance of these facilities and systems.
Additional information and answers to common questions about the engineering design review and approval
process may be found on the Frequently Asked Questions.
The minimal engineering design documentation required to review a project is an Engineering Design Report,
Engineering Calculations and Design Data, and Design Drawings. However, while this documentation may specify
the design in sufficient detail to complete the engineering design review and approval process, additional
documentation may be required to be submitted to complete the project approval process.
See the Frequently Asked Questions page for additional information regarding
documentation and submission requirements for projects.
For water projects with a construction value greater than $12,500 and all wastewater projects, the following documentation, as a minimum,
must be signed and stamped by a Professional Engineer registered in the State of Arizona:
- Engineering Design Report – Cover, Table of Contents or First Page.
- Engineering Calculations and Design Data – As required by the Subdivision, Infrastructure and Planning
Program or by the Arizona State Board of Technical Registration’s rules and regulations.
- Design Drawings – Each Individual Design Drawing Sheet.
- Technical Specifications – Cover, Table of Contents or First Page.
- Reports and Other Documentation – As required by the Subdivision, Infrastructure and Planning Program
or by the Arizona State Board of Technical Registration’s rules and regulations.
- Operations and Maintenance Manual – Cover, Table of Contents or First Page.
- Engineer’s Certificate Of Completion – As required on the certificate form.
The engineer and the engineering firm must be registered with the Arizona State Board of Technical Registration.
It is recommended that engineers submitting documentation to the Subdivision, Infrastructure and Planning
Program contact the Arizona State Board of Technical
Registration if they have any questions about the rules and regulations related to sealing documentation.
A number of standards and references are used for the review and approval of an engineering design for a
project. Some of the more important standards and references are:
See the Resources page for examples of additional standards and references that
may be used by the Department for the review and approval of an engineering design.
Project documentation submittals are reviewed using the following criteria:
- Design Report - Reviewed to validate the design basis, verify regulatory compliance, assess system
and operational impacts and establish the scope of the project.
- Engineering Calculations and Design Data - Reviewed to verify equipment sizes and process design
- Design Drawings - Reviewed for issues related to public health or safety, compliance with the rules
and regulations, proper operations and maintenance, code requirements and good engineering practice.
- Technical Specifications - Reviewed in conjunction with the design drawings to verify design adequacy.
- Reports and Other Documentation - Reviewed as required to validate the design or proposed plan.
- Equipment Manufacturer's Literature - Used as reference information to validate equipment size calculations
- Planning Documentation (Master Plan Report, etc.) - Reviewed as required to assure all relevant
issues are addressed.
- Regulatory Compliance Documentation - Reviewed as specified by the regulations or as stipulated
by a compliance order, settlement agreement or other legal instrument.
Tools and Resources
Tools and additional resources for the engineering design of water, wastewater and reclaimed water
facilities and systems may be found on the Resources pages.