Sustainable Water Resources

Water is an essential part of life. Our responsibility is to help you ensure the long-term sustainability of the Earth’s most valuable natural resource, and we take our responsibility seriously. We consider each water project an opportunity to innovate, evolve, and look at things in new and different ways to protect public health and enhance quality of life.

Sources of water are becoming increasingly difficult to develop, maintain, and sustain. Communities must overcome degrading quality and scarcity to ensure drought tolerance, address aging infrastructure, and plan for future growth and climate change.

Gannett Fleming knows that every drop is precious, and we are proficient in traditional and non-traditional sources, such as:

  • Aggressive optimization of existing resources.
  • Conservation.
  • Impaired groundwater.
  • Water reuse.
  • Desalination.

With experience in surface and groundwater, we help clients maximize their existing water supply, develop new ones, and determine the best route to future water supply sustainability. Our team is highly adept in the areas of:

  • Sourcing.
  • Treatment.
  • Reuse.
  • Permitting.

Bringing together technology, economics, sustainability, and compliance expertise, we provide comprehensive:

  • Dam and levee design and rehabilitation.
  • Water resources planning.
  • Supply development.
  • Extraction and impoundment.
  • Facility and infrastructure design.
  • Potable, reclaimed, and reuse water treatment.

Dams & Levees

Aging infrastructure, extreme weather events, and rising sea levels present hazards and threats to critical infrastructure and our communities. At Gannett Fleming, we help clients navigate these hurdles and sustain the communities they serve with advanced dam solutions that provide for:

  • Water supply.
  • Flood control.
  • Navigation.
  • Recreation.

Since our founding more than a century ago, our dams and hydraulics team has designed more than 100 new dams, modified over 600 existing dams and 50 levee systems, and evaluated the safety of more than 1,000 dams. We can help you remain prepared with innovative, cost-effective designs to rehabilitate your existing dams and bring new dams online. As well, our experts can help transform your dam safety program into a robust model to meet your regulatory and resiliency requirements.

Groundwater & Hydrogeology

From water demand projections and budget analyses through well selection, drilling, and management, the Gannett Fleming team provides full life cycle groundwater supply development. We’re also experienced in:

  • Permitting.
  • Treatment systems for drinking water.
  • Use of groundwater supply for public municipalities, water authorities, and private industries.

We identify sources and resolve diverse groundwater problems through sophisticated modeling techniques, fracture trace analyses, and geophysical methods. Our total groundwater solutions optimize groundwater usage, while efficient project delivery, communication, and cost savings ensure the success of your groundwater project.

Water & Wastewater Treatment

We know that delivering reliable, high-quality water involves every system component, from source to customer tap. Gannett Fleming focuses on drinking water reliability and quality at the best value. Our team has planned, designed, and constructed scores of award-winning water treatment plants to address our clients’ specific water quality challenges with solutions that integrate technology, economics, sustainability, and compliance.

As well, municipalities, utilities, and private industries are continually challenged to treat wastewater to increasing levels of quality at the best possible value. We seek to recover value from the energy, nutrients, and water we treat.

Having designed hundreds of wastewater treatment plants, we work to solve our clients’ challenges and ensure a fair return on investment. We also help navigate complex regulatory landscapes, nutrient discharge limits, social involvement, and funding issues. Our green approach incorporates sustainable designs, energy-saving processes, and natural treatment technologies.

Conveyance, Collection & Transmission

Maintaining high quality standards throughout conveyance, collection, and transmission is crucial to supplying safe water and ensuring the health of our water environment. From source to tap and back, our One Water approach takes the entire water system into account to deliver total conveyance, collection, and transmission solutions for your most pressing challenges.

From hydraulic analyses to long-term maintenance, our comprehensive modeling, design, construction, and construction management services keep municipal drinking water, stormwater, and wastewater on the move in communities across North America. And, using our practical asset management approach, we can help you transform your aging infrastructure into a state of good repair and operational efficiency.

Stormwater & Drainage

We focus on stormwater management that:

  • Restores the ecosystem.
  • Returns water for future use.
  • Benefits the community.
  • Controls compliance and maintenance costs.

Our team is skilled in both traditional infrastructure and green initiatives, emphasizing solutions that blend the landscape of the surrounding community. Well-versed in local, state, and national design standards, we ensure your assets are Total Maximum Daily Load (TMDL) and National Pollutant Discharge Elimination System (NPDES)–Phase II compliant. We also help clients implement programs for the assessment of stormwater fees for infrastructure improvements.


Are you looking for a reliable, collaborative partner? Do you have a planning, design, or construction challenge? We want to hear from you.

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Are you looking for a reliable, collaborative partner? Do you have a planning, design, or construction challenge? We want to hear from you.

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