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Water Contractor Bid Information

The Cobb County Water System’s capital improvement program includes several different types of construction projects that require the services of experienced and qualified contractors. In accordance with State laws and local ordinances, contractors are selected for these public works projects through a competitive bidding process or, at times, through a competitive proposal process.

Since many projects are similar in nature, the County has adopted a policy that allows each department to prequalify contractors for anticipated future work. The Water System's prequalification program has been developed for several specific types of construction, as follows:

  • Routine, smaller-diameter water mains and sewer lines, typically involving conventional cut-and-cover construction methods. The "Water-Sewer Prequalification Package" is used by applicants interested in these projects.
  •  Sewer infrastructure rehabilitation, including the following sub-sets:
    • Cured-in-Place Pipe (CIPP) Rehabilitation prequalification focuses on contractors experienced in specific methodology using pre-approved products. A separate "CIPP Rehab Prequalification Package" is provided for these applicants.
    • Sewer Manhole Rehabilitation prequalification involves those contractors that recondition the internal surfaces of sewer manholes, junction structures, pump station wet wells, or other concrete surfaces using pre-approved products and procedures. The "Sewer Manhole Rehabilitation Prequalification Package" contains the instructions and forms for applicants for this type of work.
  • For water & sewer line construction, CIPP rehabilitation, and manhole rehabilitation prequalification, please contact Bao Nguyen at 770-419-6348 or email   Also, you can find the application package by clicking here.
  • Large-diameter pipelines, pumping stations, or wastewater treatment plants are usually complex projects with unique requirements; therefore, a separate project-specific qualification process is utilized at the time of bid advertisement.
  • Stormwater infrastructure construction involves the replacement or extension and modification of existing drainage facilities, usually executed through work orders under multi-year on-demand contracts. The prequalification of contractors for this work is handled by the Water System's Stormwater Management Division. Contact Chuck Youmans, Operations Section Manager at 770-419-6438 or email at to obtain further information.  

Oftentimes, transportation construction projects in the County require the relocation of existing utilities, including the water and sewer facilities of the Cobb County Water System. While these projects are bid and managed by the Cobb County Department of Transportation, the contractor that actually performs the relocation work must be included on the Water System’s current List of Prequalified Contractors.

All contractors working on Water System facilities must be licensed as a Utility Contractor by the State of Georgia. Also, there are licensing requirements for other trades (e.g., electrical, low-voltage wiring, HVAC, and plumbing) that may be involved in pump station or treatment plant projects.  Click here to visit the Georgia Secretary of State website for further information on licensing.

As with other County departments, current bid opportunities are listed on the Purchasing Department website, along with information regarding Vendor Registration, Disadvantaged Business Enterprise participation, and Georgia Security & Immigration Act requirements. To visit the Cobb County Purchasing Department website, click here.

Contractor Bid FAQs

How long does the prequalification process take?

Applications are reviewed by the Water System staff upon receipt, but additions to the List of Prequalified Contractors require the approval of the Board of Commissioners. Approval of additions are made only on a quarterly basis, so the entire process may take several months, depending on when the application is received.

How often must a contractor apply for prequalification?

The County policy requires that the List be abandoned every two years and the prequalification process be repeated. Notices are sent to the contractors when renewal is necessary.

Does Cobb County add contractors to the list by reciprocity?

No. While the prequalification of contractors by other local jurisdictions is taken into consideration, each contractor must complete the application, review, and approval process of the Cobb County Water System.

Are individual notices sent to contractors on the List when a project is advertised for bid?

No. Projects are advertised on Fridays in the Legal Section of the Marietta Daily Journal and are also listed on the Cobb County Purchasing Department website.