Major Sewer Improvement Effort

Project Overview

The Regional Wastewater Reclamation Department (RWRD) is responsible for sewer improvement efforts throughout Pima County. Pima County is currently rehabilitating/upgrading major facilities representing millions of dollars in investments. Ultimately, these improvements will extend the life cycle of our community's wastewater infrastructure by more than 50 years.

Southeast Interceptor Sewer Augmentation (SEI) project

The Pima County Regional Wastewater Reclamation Department (RWRD) and its contractor, KE&G Construction, Inc., will soon begin constructing the Southeast Interceptor Sewer Augmentation (SEI) project, a 2.6 mile project, which extends south from 17th to 36th Streets and east along 36th Street between 7th and Euclid Avenues. The SEI project will upgrade a portion of the existing SEI to address capacity restrictions between 18th and 36th Streets.  
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The North Rillito Interceptor (NRI) project

The North Rillito Interceptor (NRI) is a large diameter pipeline that will stretch 10 miles from Tucson's far east side to the Ina Road Wastewater Treatment Facility.
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22nd Street Sewer Augmentation project

Pima County and its contractor, KE&G Construction, Inc., will begin work on the 22nd Street Sewer Augmentation project, which extends from Alvernon Way to Swan Road. This work is necessary because the existing pipe is at or near its maximum flow capacity. This project will install new sewer along 22nd Street from Alvernon Way to Swan Road, increasing sewer volume and improving the lifespan of the sewer infrastructure in the area.
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Pima County