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Water Treatment Plant Construction in Pennsylvania and the Mid-Atlantic

Johnston Construction Company, based in Dover, Pennsylvania, has 29 documented water treatment plants project profiles across Pennsylvania and the Mid-Atlantic.

Johnston Construction Company is a construction contractor based in Dover, Pennsylvania. Its documented water treatment plant (WTP) work includes construction and upgrades to municipal and privately operated facilities in Pennsylvania and neighboring states.

The project records describe filtration and underdrain rehabilitation, clarifier work, chemical feed and disinfection systems, pumping, process piping, concrete, electrical distribution, instrumentation and startup. Individual project pages distinguish the work of Johnston and its participating divisions.

Pennsylvania project experience

Explore the documented work and Johnston’s role at each Pennsylvania project:

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Water Treatment Plants14th Street Water Treatment Plant GAC Filter Media ReplacementOcean City, MarylandJohnston Construction Company served as the contractor for replacement of the granular activated carbon and filter sand within four filters at the 14th Street Water Treatment Plant. Water Treatment Plants14th Street Water Treatment Plant Standby Generator UpgradeOcean City, MarylandJohnston Construction Company procured and coordinated major standby-generator equipment for the 14th Street Water Treatment Plant in Ocean City, Maryland. Water Treatment Plants44th Street Water Treatment Plant Filter RehabilitationOcean City, MarylandJohnston Construction Company served as the contractor for the comprehensive rehabilitation of fourteen filters at the 44th Street Water Treatment Plant. Water Treatment Plants44th Street Water Treatment Plant Roof ReplacementOcean City, MarylandCompleted roof replacement improvements at the 44th Street Water Treatment Plant in Ocean City, Maryland. Water Treatment PlantsAberdeen Water Treatment Plant Design-Build UpgradeAberdeen, MarylandProvided complete design-build delivery for major upgrades to the City of Aberdeen Water Treatment Plant. Water Treatment PlantsArtesian Wilmington Airport Water Treatment Plant RenovationNew Castle, New Castle County, DelawareServed as Prime Contractor for the Facility Renovations at the Wilmington Airport Water Treatment Plant under Contract No. W-15-1, completing a comprehensive renovation of an existing… Water Treatment PlantsBrown Manor Water Treatment Facility ImprovementsWest Wyoming / Wyoming, PennsylvaniaJohnston Construction Company performed design-build water treatment facility improvements for the Brown Manor WTF Improvements project in West Wyoming, Pennsylvania. Water Treatment PlantsCarlisle Water Treatment Plant – Slide & Stop Gate InstallationCarlisle, Cumberland County, PennsylvaniaServed as Prime Contractor for the installation of four slide and stop gates at the Carlisle Water Treatment Plant. Water Treatment PlantsDover Long Point Water Treatment Plant Process ImprovementsDover, Kent County, DelawareServed as Prime Contractor for a comprehensive process upgrade to the City of Dover's Long Point Water Treatment Plant. Water Treatment PlantsFort Detrick Water Treatment Plant Underdrain Filter ReplacementFort Detrick, Frederick, MarylandJohnston Construction Company performed design-build construction services for the replacement of five underdrain filter systems at the Fort Detrick Water Treatment Plant in Frederick… Water Treatment PlantsFort Meade Water Treatment Plant Flocculation and Sedimentation Basin CoversFort Meade, MarylandJohnston Construction Company provided design-build services for the installation of protective covers over the existing flocculation and sedimentation basins at the Fort Meade Water… Water Treatment PlantsGenerals Greene Water Treatment Plant – 1,500-Gpm Facility Replacement & RehabilitationDover, Delaware 19901Johnston Construction Company served as Prime Contractor for the Generals Greene Water Treatment Plant Rehabilitation Project in Dover, Delaware, involving the demolition of existing… Water Treatment PlantsGorman Avenue Water Treatment Plant Chemical Room Overhead Door ReplacementOcean City, MarylandJohnston Construction Company performed the replacement of the overhead coiling door serving the Chemical and Control Building at the Gorman Avenue Water Treatment Plant. Water Treatment PlantsGorman Avenue Water Treatment Plant Clarifier RehabilitationOcean City, Worcester County, MarylandThe project included the rehabilitation of two existing circular solids-contact clarifiers, including removal and replacement of mechanical equipment, concrete-tank repairs, concrete… Water Treatment PlantsGorman Avenue Water Treatment Plant Ferric Chloride System AdditionOcean City, Worcester County, MarylandThe project included construction of a new bulk ferric chloride storage facility and installation of a complete chemical storage, transfer, metering, and feed system. Water Treatment PlantsGorman Water Treatment Plant – 12-Inch Valve ReplacementGorman Water Treatment Plant, Ocean City, MarylandJohnston Construction Company served as Prime Contractor for the replacement of a 12-inch water valve at the Gorman Water Treatment Plant in Ocean City, Maryland, under a… Water Treatment PlantsMontebello Filtration Plant II Emergency Filter RepairBaltimore, MarylandCompleted comprehensive rehabilitation of five filter cells, including removal of the existing filter media, removal and disposal of the existing clay and plastic-tile underdrain… Water Treatment PlantsNaval Support Activity Annapolis Water Treatment Plant – Water Conservation ProjectAnnapolis, MarylandDelivered a turnkey design-build water treatment plant upgrade at the U.S. Naval Academy, including final design, engineering, permitting, construction, equipment installation… Water Treatment PlantsOcean City 100th Street Chlorine Booster Station & 15th Street WTP GAC Filter ImprovementsOcean City, Worcester County, Maryland — Two FacilitiesServed as Prime Contractor for Contract WR/OC-194, completing improvements at two active Town of Ocean City water-system facilities: the 100th Street Chlorine Booster Station and the… Water Treatment PlantsPark Water Plant Flow Meter ReplacementSalisbury, Wicomico County, MarylandJohnston Construction Company served as the prime contractor for the installation of a new 16-inch magnetic flow meter and associated improvements at the City of Salisbury’s Park Water… Water Treatment PlantsPark Water Plant Fluoride System ImprovementsSalisbury, Wicomico County, MarylandJohnston Construction Company completed improvements to the fluoride chemical-feed and drain system at the City of Salisbury’s Park Water Plant. Water Treatment PlantsRolling Mill and Leslie Water Treatment Plants Powder Activated Carbon SystemsRolling Mill and Leslie WTPs, North East, MarylandJohnston Construction Company served as the prime contractor for installation of new powder activated carbon feed systems at the Rolling Mill and Leslie Water Treatment Plants. Water Treatment PlantsShipbuilders Well & Water Treatment FacilityMilton, Sussex County, DelawareJohnston Construction Company served as the prime General Contractor for Contract 2020-0131 of the Shipbuilders Well & Water Treatment Facility project. Water Storage and TanksSixth Street Water Treatment Plant Clearwell No. 2 ImprovementsHarrisburg, PennsylvaniaJohnston Construction Company performed the Sixth Street Water Treatment Plant Clearwell No. 2 Improvements project for Veolia Water Pennsylvania, Inc. Water Treatment PlantsSixth Street Water Treatment Plant Sodium Hypochlorite Generation System ReplacementHarrisburg, PennsylvaniaJohnston Construction Company performed design-build construction services for the VWPA Sixth St. WTP Hypo Generation Project in Susquehanna Township, Dauphin County, Pennsylvania. Water Treatment PlantsSt. Michaels Water System Improvements – Marengo & Glory WTPsSt. Michaels, Talbot County, MarylandServed as Prime Contractor directly to the Town of St. Michaels for comprehensive water-system improvements at the Town's two existing water treatment plants serving Marengo Street… Water Storage and TanksSteelton DBP Rule Compliance Improvements – 260,000-Gallon Clearwell & WTP RetrofitSteelton, Dauphin County, PennsylvaniaPerformed the major civil, sitework, utility and water-treatment-plant retrofit scope supporting construction of the new 260,000-gallon clearwell. Water Treatment PlantsSusquehanna Water Treatment Plant – Intake Traveling Water Screen RepairColumbia, Pennsylvania 17512Johnston Construction Company served as Prime Contractor for the mechanical repair of two existing FMC Link-Belt traveling water screens at the Susquehanna Water Treatment Plant in… Water Treatment PlantsSussex Shores WTP No. 1 Pretreatment ImprovementsBethany Beach, Sussex County, DelawareJohnston Construction Company served as Prime Contractor for the pretreatment improvements at Sussex Shores Water Company’s Water Treatment Plant No. 1 in Bethany Beach, Delaware. The…