Johnston Construction Company

Johnston Construction Company is an environmental and remedial construction contractor located in Dover (York County), Pennsylvania and Glyndon (Baltimore County), MD. Johnston specializes in environmental project construction and hazardous waste cleanup. Our experience includes the construction of water and waste treatment facilities for both industrial and municipal clients. At area landfills, Johnston has built many projects for handling leachate and methane gas. Johnston also specializes in the construction of foundations for water and petroleum storage tanks. Johnston does millwrighting and rigging for industrial clients in Pennsylvania and Maryland.