RWRD Sewer Improvement Plan

HB2212 Required Language for Pima County Permit, License, and Application Forms


Administrative Review Requirements

Application package shall consist of:

  • Vector PDF of project plans sealed by an Arizona Registered Professional
  • Type III capacity request
  • ADEQ Notice of Intent to Discharge
  • Name of development and developer
  • Parcel number(s)
  • Engineer's cost estimate for constructing the sewer
  • Adjacent streets and developments
  • North arrow & scale
  • Small location map

Substantive Review Requirements

  • Plans and specifications must conform to RWRD design requirements
  • Plans and profiles for all sewer lines, manholes, force mains, depressed sewers, and lift stations
  • Cross sections showing construction details and elevations
  • Slope of each gravity sewer segment stated as a percentage;
  • Drainage features and controls, and erosion protection
  • Horizontal and vertical location of utilities within the area affected by the sewer line construction
  • Manhole numbers shall start from the most downstream manhole and increase upstream
  • Label sewers as public or private.
  • Current and proposed conditions such as topography, property boundaries, easements, hardscape, utilities (water, gas, etc.), and manhole rims and inverts, along with pipe slopes
  • Existing and proposed pump/lift stations and force mains
  • Public sewer easements
  • Proposed landscaping near public sewers
  • For commercial/industrial projects provide wastewater fixture unit equivalent calculations, shown in tabular form. Include the number, size and location of all proposed and existing water meters
  • Point of connection of new systems to the existing systems, the manhole rim and pipe invert elevations of the existing and proposed public sewers
  • Calculations to justify system integrity (i.e. sewer depth) and scour analysis (i.e. wash crossings)
  • Metering and/or sampling manholes as needed per Pima County Ordinance No.1991-140


  • Applicant  emails application package to, provides FTP link or USB drive (if site addressing is desired, it can be combined in this request)
  • If corrections are required, Pima County will follow-up directly with applicant
  • Pima County will Email an invoice to the applicant prior to Issuance.
  • Upon applicant payment of invoice, Pima County will email applicant approved plans/ADEQ Construction Authorization and copy municipality
  • If municipality is requesting modifications to plans following Pima County approval, applicant is responsible for following up with Pima County regarding changes affecting approved sewer design
  • Process for unincorporated County is imbedded in site construction permit
  • Applicant must apply for sewer construction permit after plans approval and prior to any sewer construction activity.
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