About

1956: The City of Greensboro, North Carolina, is one of Hazen and Sawyer's longest standing clients. Projects for Greensboro such as the Lake Brandt Dam influenced our expansion into the Mid-Atlantic states.

1957: Our work on the Springwells WTP project in Detroit led us to open our first branch office there in the mid-1950s.

1961: Our first project for the New York City Department of Environmental Protection was at Tallman Island WPCP. Since then we have worked on numerous major programs and projects for the DEP.

1962: Our work on the New York World’s Fair included design of 8 miles of new sewer and 9 miles of stormwater system over a 600-acre site, as well as water quality analysis and treatment for lakes in Flushing Meadow Park used for aquatic sports and exhibitions.

1966: This Springfield, MA, project involved an 8-mile-long, 48-inch transmission main and 60-mgd pumping station to supplement an existing reservoir.

1971: Hazen and Sawyer designed the original 18 mgd Plum Island Water Pollution Control Plant serving Charleston, SC. The facility has continued to retain Hazen and Sawyer for consultation and upgrade/expansions to its current permitted capacity of 36 mgd.

1976: The Chamberlain Street Tank is a 5 million gallon prestressed concrete water storage tank constructed to increase available finished water storage in the City of Raleigh, North Carolina's primary service zone. The project included a major upgrade of the recreational facilities at the popular neighborhood park on site.

1979: For the Miami-Dade County Water and Sewer Department in Florida, we completed work on a new 60-mgd plant to serve the northern portion of the County. Known today as the North District Wastewater Treatment Plant (pictured here in 1977), we have subsequently provided design and construction management services for expansion of the plant to 60, 80, and 100 mgd.

1980s: Located on a very restrictive site in the former Brooklyn Navy Yard, the prize-winning Red Hook secondary treatment plant incorporates energy conservation through 100% utilization of bio-gas.

1987: In association with NOAA and POTWs in southeast Florida, Hazen and Sawyer performed a series of unique ocean outfall monitoring studies called the Southeast Florida Outfall Experiment (SEFLOE). The SEFLOE studies were the impetus behind legislation favorable to the specific outfalls studied being written into the Florida Administrative Code. Hazen and Sawyer continues to work with the utilities and NOAA to implement the Florida Area Coastal Environmental initiative.

1993: Hazen and Sawyer was retained by the South Florida Water Management District to evaluate the regional economic impacts of a stormwater control and treatment system as it affects sugar, vegetable and sod production in the Everglades Agricultural Area. The study was the first of its kind to assess the regional economic impact of Everglades restoration south of Lake Okeechobee as it affects an industry.

1997: We performed a 12-month oceanographic and hydrodynamic field data collection program to inform an Effluent Disposal Feasibility Study for the City of Cartagena, Colombia, then going on to develop the City's master plan for wastewater treatment and effluent disposal. The work was funded by part of the $200 million in loans secured from the World Bank to upgrade water and wastewater works.

2000: For a project in Jordan funded by USAID, we provided the final design to restructure nearly half of Amman’s water distribution system, along with the construction management of water towers, reservoirs, pumping stations, and pipelines.

Present: The 290-mgd Croton WTP, under construction in the Bronx, will be New York City’s first water treatment plant. The Environmental Impact Study for the project was recognized by the New York Association of Consulting Engineers, winning the 2005 Diamond Award.

Present: We are currently providing services for what may be the largest reclaimed water facility in the nation, Miami-Dade County’s 285-mgd (peak flow) High Level Disinfection (HLD) Project. Under a landmark Consent Order with the State of Florida Department of Environmental Protection, all effluent from the facility must meet Florida’s stringent reuse standards for HLD.

Present: In Dakar, Senegal, with USTDA funding, we are preparing a feasibility study and conceptual design for the new Corniche West WWTP and rehabilitation and expansion of the wastewater collection system.

Present: For Sanitation District No. 1 of Northern Kentucky, we're providing full system solutions to address CSOs and SSOs, comparing the costs and benefits of using integrated gray, green and watershed controls to achieve water quality improvements more quickly and effectively.

Present: We are providing design services for the long-term rehabilitation of the 80-year-old Gilboa Dam in upstate New York, following our award-winning fast-track interim repairs.

Present: In previous projects, we added UV disinfection, lowered energy costs, and expanded the Neuse River WWTP from 30 mgd to 60 mgd. We're currently working to expand the plant further, to 75 mgd.