Water and Wastewater Treatment Plant Construction
Langston Construction Company builds and upgrades water and wastewater treatment plants, pump and lift stations, raw water intakes, and storage tanks, and hardens the physical security and resilience of critical water infrastructure for cities, water and sewer utilities, tribal nations, and industrial owners. We have delivered water and wastewater projects since 1969, from treatment plants and finished-water tanks to full pump station programs.
Water treatment plants
We build and upgrade drinking water treatment plants, including the tanks, filter buildings, and all the concrete and site work around them.
Wastewater treatment plants
We build and expand city and industrial wastewater plants, from the tanks and basins that treat the water to the buildings that house the equipment.
Pump stations and lift stations
We build the pump stations and lift stations that move water and sewage through the system, including the wells, pads, and buildings around them.
Raw water intake and storage tanks
We build the intake structures that pull in raw water and the tanks that store finished water, including all the concrete and site work.
Industrial pretreatment systems
We build the systems that clean up industrial wastewater before it reaches the city sewer, including the containment, pads, and support buildings.
Underground utilities
We install the underground pipes that connect it all: water mains, sewer lines, force mains, and storm drainage on and around the site.
Site civil and earthwork
We handle the earthwork, grading, access roads, drainage, and foundations that get a water or wastewater site ready before the plant goes up.
Physical Security & Resilience
We protect water sites from break-ins and flooding, with perimeter fencing, security walls, access control, and flood protection.
Have a treatment plant, pump station, intake, tank, or AWIA 2018 program in discovery?
Talk to a Langston construction lead about water and wastewater civil, structural concrete, process-piping, and mechanical scope, SDWA and CWA compliance documentation, AWWA C-series and D-series references, AWIA 2018 risk and resilience hardening, and SRF Davis-Bacon prevailing-wage support.
Featured water and wastewater projects
Six named, direct water and wastewater projects. Tribal water, municipal wastewater, finished water storage, raw water intake, pump station program, and industrial pretreatment. Additional municipal and industrial programs are delivered for private clients.
Hillandale Water Storage Tank
Finished water storage tank for Greenville Water at the Hillandale site. AWWA D-series tank standards. Combined civil, structural, and tank-erection scope delivered under one Langston contract. Photo credit Greenville Water.
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Rosman Wastewater Treatment Plant
Municipal wastewater treatment plant construction at Rosman, North Carolina. Headworks, aeration basins, clarifiers, and disinfection. CWA NPDES discharge permit conditions, NCDEQ state primacy oversight, and AWWA / WEF process specifications.
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CNS Conventional Wastewater Refurbishment
Refurbishment of an existing conventional wastewater treatment pond in York County, South Carolina. New below-grade equipment pit, upgrades to associated process systems, and more than 6,050 LF of new HDPE process piping encased in flowable fill.
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Cherokee Tribal Water Treatment Plant
Tribal water treatment plant construction for the Eastern Band of Cherokee Indians. SDWA tribal jurisdiction with direct EPA Region oversight (no state primacy on tribal lands). Indian Health Service partnerships supporting the federal funding posture.
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Lake Sequoya Raw Water Intake Pump Station
Raw water intake pump station at Lake Sequoya. Reservoir intake structure, low-lift pumping, civil and structural scope, and tie-in to the host utility’s raw water transmission system. Combined intake + pumping delivered under one Langston contract.
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Industrial Pre-Treatment Wastewater Plant
Industrial pretreatment wastewater plant construction for an industrial owner discharging to a Publicly Owned Treatment Works (POTW). Equalization basins, neutralization, oil-water separation, dissolved air flotation, and discharge metering structure sized to the POTW industrial user permit.
View projectFrequently asked questions
Straight answers to what owners, engineers, and program managers ask about our water and wastewater work.
Does Langston build both water and wastewater treatment plants?
Yes. Langston Construction Company builds and upgrades potable water treatment plants and municipal and industrial wastewater treatment plants, including the structures, buildings, and site work that go with them. Recent examples include the Cherokee Tribal Water Treatment Plant and the Rosman Wastewater Treatment Plant.
What water and wastewater projects has Langston completed?
Projects include the Hillandale finished water storage tank for Greenville Water, the Rosman Wastewater Treatment Plant, the Brunson pump stations program, the Cherokee Tribal Water Treatment Plant, the Lake Sequoya raw water intake pump station, and an industrial pretreatment wastewater plant.
Does Langston build pump stations and lift stations?
Yes. We build water and wastewater pump stations and sewage lift stations, including wet wells, valve vaults, structural pads, and the buildings and site work around them.
Does Langston build water storage tanks and raw water intakes?
Yes. We deliver finished water storage tanks and raw water intake structures, combining the civil, structural, and tank-erection scope under one contract. Storage tanks are built to AWWA D-series standards.
How does Langston handle physical security and resilience for water infrastructure?
We harden the physical security and resilience of critical water and wastewater infrastructure under America’s Water Infrastructure Act of 2018 (AWIA), including perimeter fencing, security walls, access control, and flood-protection scope.
Does Langston install underground water and sewer utilities?
Yes. We install the underground pipes that connect water and wastewater plants to the rest of the system, including water mains, sewer lines, force mains, and storm drainage. It is part of the work our own crews handle on site.
What states does Langston work in?
Langston Construction Company has delivered water, wastewater, and other construction, serving cities, water and sewer utilities, tribal nations, and industrial owners since 1969.
From the field
Recent news
CAGC Excellence in Human Resources Award
Mary-Allyson Chauvin named recipient of the CAGC Excellence in Human Resources Award. Recognition for the people program that drives our safety and execution culture.
Read story March 2026AGC CSEA 1st Place Utility Division Winner
Langston Construction Company recognized at the AGC National Convention with 1st Place in the Construction Safety Excellence Awards Utility Division. Top safety performer in the country.
Read story February 2026A commitment to safety communication
How Langston's daily safety culture translates to fewer incidents and stronger schedule integrity on utility, federal, and critical-infrastructure programs.
Read storyBuilding water and wastewater infrastructure since 1969
Delivered civil, structural concrete, process-piping, pump-installation, and intake-construction scope on water and wastewater treatment plants, pump stations, raw water intakes, and storage tanks, plus the physical security and resilience of critical water infrastructure, for owners.