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Project Updates 2015
   2014 Turqoise Main Repair                 
Annual Water and Sewer Line Replacement Program (Ongoing)
In 2011, the City of Flagstaff Water began implementing a water and sewer main replacement and rehabilitation program. The City of Flagstaff’s Water Main Replacement Program is designed to replace and rehabilitate aged and deteriorating water mains throughout the city. Many of the pipes in the system were installed in the early 1900s and are small in comparison to modern standards in water mains. The small size and age of the pipes, coupled with corrosion and sediment accumulation over the years, has affected the flow rate and quality of water in our community.

The program consists of annual projects that replace or rehabilitate pipe that has exceeded the useful service life, improve available fire flows, remove corrosion by-products from the inside of the pipe improving water quality and reduce the potential for creation of biofilms and bacteriological activity that can impair the quality of potable water. The objective is to replace pipe when the condition warrants replacement or to clean and line unlined cast iron pipe, provided the pipe is in sound condition. Also, when the pipe is replaced, the replacement of appurtenances, such as valves, fire hydrants and house service lines in public space are included in this project.

The locations where water main and sewer main replacement work is to be performed are determined based upon an evaluation using water main break data, maintenance repair information provided by operations' staff, GIS data (diameter, install date, material, etc.), hydraulic model results, and existing street pavement condition assessments.  The evaluation criteria helps accurately prioritize candidates for main replacement within the City in an effort to avoid multiple pavement cuts. The City's goal is to replace 2.5 miles of water main and 1 mile of sewer main each year. 

Replacing water and sewer mains is necessary business. If your house was built prior to 1950, chances are we will come to your neighborhood.

Utilities Master Plan (2011 - 2015)
The purpose of the overall master plan is to provide the City’s Utilities Division guidance for long-term planning, quantify the needs of water resources and determine the necessary water, wastewater and reclaimed water infrastructure needed over time. The objective of the master plan is to collect, analyze and provide information in one location in order to provide the most cost effective, reliable service to the City’s utility customers. The master plan is broken into these five chapters:

1) Water Resources: This chapter includes a discussion of water resources and water production, identification of long-term water needs and providing recommended options and their respective costs for consideration. Only the first chapter is completed in draft form. The chapter is expected to be updated in 2015. View the 2011 Executive Summary draft of the report. View a draft of the 2011 full report.

2) Water Infrastructure (expected in 2015): This chapter is planned to describe the existing water system, performance criteria based upon hydraulic modeling and the necessary infrastructure needed over time and at build-out. This chapter is being completed by NCS Engineers, Phoenix, Arizona. 

3) Wastewater Infrastructure: This chapter is planned to describe the existing wastewater system, performance criteria based upon hydraulic modeling and the necessary infrastructure needed over time and at build-out. 

4) Reclaimed Water Infrastructure: This chapter is planned to describe the existing reclaimed water system, performance criteria based upon hydraulic modeling and the necessary infrastructure needed over time and at build-out. 

5) Water Policies (2014): This chapter consists of a comprehensive set of formal water policies adopted by the City Council in 2014, which is available for download here.

You can also see a
presentation of the Utilities Integrated Master Plan. (This presentation may take a minute to download.)

Red Gap Ranch Pipeline (2008 – 2015)
The City hired JACOBS Engineering to conduct a feasibility study to analyze a variety of information associated with a possible pipeline from the City’s Red Gap Ranch located 40 miles east of the City. The study will define the most optimum pipeline alignment, conceptual design of the pipeline and associated facilities, right-of-way, federal, state & tribal environmental laws and estimated costs associated with the construction, operation and maintenance of the pipeline. Phase 1 of the three phase project was complete in 2009, and Phase 2 work was halted in 2009 due to issues obtaining right-of-way (ROW) access with various entities in order to complete the feasibility study.  In July 2014, after five years of discussions with various agencies and government entities, the City attended a meeting with the Arizona Department of Transportation (ADOT) and the Arizona Department of Water Resources (ADWR) at which ADOT agreed to work with the City in order to complete the feasibility study and to develop an Intergovernmental Agreement (IGA) that identifies the necessary steps for ADOT and the City to consider regarding a permit for the construction and maintenance of a waterline within the ADOT ROW of Interstate 40.  This conversation was memorialized in this letter from the Director of ADOT to the Mayor on December 31, 2014. The City plans to complete Phase 2 as soon as possible in order to determine a cost estimate as outlined above.

The City of Flagstaff purchased Red Gap Ranch in 2005, through a voter-approved bond process. Red Gap Ranch, located approximately 40 miles east of Flagstaff, lies above underground aquifers which can substantially increase the water supply available to Flagstaff. In addition to accommodating future water needs, Red Gap Ranch will diversify the sources of the existing water supply.

Pipeline Schedule
The City of Flagstaff is currently in Phase I of a Feasibility Study to determine the most constructable pipeline alignment. The results of the Feasibility Study will determine how to proceed with the Pipeline project. The next steps in the process are Phases II and III of the Feasibility Study, both of which involve more detailed study of a Recommended Alignment.

Feasibility Study Overview
The Red Gap Ranch Pipeline Feasibility Study seeks to identify the best pipeline alignment for further study. The Feasibility Study has identified four goals : Lowest Cost, Least Community Impact, Least Environmental Impact, and Least Project Risk. The final recommendation of the Feasibility Study will serve as a guide for achieving these goals in design and construction phases. View the most recent project information. (Meeting Takehome 1_8_09.PDF)

Public Involvement
In order to best understand public sentiment regarding possible issues associated with the Recommended Alignment. The Red Gap Ranch Pipeline Feasibility Study project team is accepting all public comment for consideration.

Please take the opportunity to click the link below and email the project team your questions, comments, and concerns. All submissions will be included in the Public Record of the project. To leave a comment regarding the project.

Project Documents

The following links contain useful project information:

Completed Projects