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  • Initial site grading for the Quarles Intake Taste and Odor Facility
  • Water main installation Blackjack Project
  • Q1 Water Treatment Plant - Completed 2021

Construction Projects

Current Projects

Quarles Raw Water Intake PAC Project

Seasonal fluctuations can create conditions in natural water sources, such as the Chattahoochee River, that promote naturally occurring algae. These conditions may cause an “earthy” taste and odor in drinking water. While treated water remains safe to drink and use for all purposes, some people can detect the differences in taste and odor even at very low concentrations.

To better control undesirable tastes and odors in our drinking water, Cobb County-Marietta Water Authority is installing a Powdered Activated Carbon (PAC) Treatment System at the Quarles Raw Water Intake Facility on Johnson Ferry Road. PAC is commonly used in water treatment to neutralize taste and odors in the water.

The facility will include a brick equipment building and an approximately 4-story (47 feet) storage silo. The project represents a $4.2 million investment in maintaining high quality drinking water now and into the future. Construction began in January 2021 and currently includes site preparation activities. Currently, it is planned to have the storage silo and equipment delivered in late summer/fall timeframe with the facility fully operational in early 2022.

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Factory Shoals 30-inch & Six Flags 24-inch Water Main Replacement Project

The Factory Shoals and Six Flags water main replaces an aging pipe system of 1980s 20-inch diameter concrete pipe, reaching the end of its useful life.  The new 24-30-inch diameter ductile iron pipe will increase reliability and mitigate risks of catastrophic failures by replacing the aging infrastructure with more reliable and longer life span materials. This new water main will provide adequate water supply to Cobb County residents and neighboring customers for decades. The water main will be installed in the travel lanes of Factory Shoals Road, Riverside Parkway, and Cityview Drive to minimize conflicts with other buried utilities and impacts to private property. 

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Mars Hill Church Rd. to Pine Mountain Rd. 36-inch Water Main Replacement Project

The Mars Hill Church Rd to Pine Mountain Rd 36-inch Water Main Replacement project involves replacing an aged, undersized section of a water line in northwest Cobb County. The existing 30- and 36-inch prestressed concrete cylinder pipe will be replaced with a 36-inch ductile iron pipe. This new water line will reduce the potential for pipeline failures and increase water supply capacity. In most cases, the project will involve removing the existing pipe from the ground and installing the new pipe in its place. 

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Wyckoff Raw Water Pipeline Improvements Project

The Wyckoff Raw Water Pipeline Improvements project involves replacing an aged, undersized section of a water line that supplies raw water to the Hugh A. Wyckoff Water Treatment Plant. The existing 30-inch prestressed concrete cylinder pipe (installed in 1964) will be replaced with a 54-inch ductile iron pipe. This new water line will improve water supply redundancy and reduce the potential for pipeline failures. The project will involve removing the existing pipe from the ground and installing the new pipe in its place.

Project Flyer

Recently Completed Projects

James E. Quarles Plant 1 Replacement Project

Completed in 2021, the award-winning James E. Quarles Plant I Replacement Project supplies reliable, sustainable, high-quality potable water to over one million for generations to come. Provisions to double the plant capacity are built into the facility ensuring today's infrastructure will sustain water production needs well into the future. 

The existing Quarles Plant 1 was constructed in the 1950s and had reached the end of its useful life. The replacement Quarles Plant 1 needed to be constructed within the same footprint of the existing facility while keeping the original facility operational to treat and deliver safe drinking water. The new 33 million gallons per day (MGD) Quarles Plant 1 includes treatment processes and structures with improved redundancy, reliability, and flexibility. The $72-million dollar James E. Quarles Plant 1 Replacement Project for CCMWA came in under budget by over $1 million dollars.

 

For more information about our Pipeline Projects, please contact us at 770.514.5201 or email us at pipelineproject@ccmwa.org.

 

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