Comprehensive Services
From ground-up design to final startup, STH delivers plumbing solutions engineered for long-term performance and efficiency. Our Construction Plumbing team supports builders, engineers, contractors, and owners across Maryland, DC, Virginia, Delaware, and West Virginia—ensuring every new build operates reliably from day one and beyond.
Design Collaboration
Work with our engineering team to specify domestic, storm, and sanitary systems using industry best practices and manufacturer-approved designs.
Right-Sized Equipment
We help select appropriately sized booster pumps, VFD systems, filtration stations, and wastewater equipment to deliver optimal performance and lifecycle value.
Construction Coordination
STH staff integrate smoothly into construction teams, helping maintain schedule coordination, installation compliance, and system verification.
Factory-Trained Installation
Our experienced technicians and certified installers ensure equipment is configured, aligned, and commissioned for safety, code compliance, and ASME/NFPA standards..
Domestic Booster Systems
Duplex/triplex boosters with VFD control, bladder tanks, and PRVs preinstalled for peak efficiency.
Storm & Sanitary Drainage
Engineered sump and sewage systems tailored to building footprint and site conditions, designed for code compliance and future reliability.
Fire Pumps & Pump Rooms
Pre-packaged fire pump systems integrated with transfer switches, relief valves, and complete electrical support.
Water Treatment & Filtration
Point-of-entry systems, cooling tower filtration, and Legionella mitigation installed per specification and health code requirements.
Construction Startup & Commissioning
Factory-led pump and controller startups, system testing, flow verification, and handoff documentation.
Engineering Expertise
Our team partners with project engineers from planning to commissioning to accurately estimate system capacity, parts, and long-term service needs.
Turnkey Installation & Support
STH handles everything from equipment delivery to site startup—saving project managers time and avoiding coordination gaps.
Extensive Parts & Compliance Resources
Benefit from a stocked warehouse, manufacturer relationships, and access to industry engineering guides and service documentation.
Seamless Transition to Aftermarket Support
When construction wraps, STH steps in with preventative maintenance and aftermarket service agreements to ensure system uptime and lifecycle management.