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Business Details
50+ Years
experience
Trusted Engineering Solutions in Warrington, PA
Founded in 1973, Carroll Engineering has established itself as a leader in civil engineering and surveying services across Pennsylvania, New Jersey, and Delaware. With over 90 professionals operating from five regional offices, we deliver innovative solutions for water facilities, wastewater systems, municipal infrastructure, and environmental projects. Our team combines technical expertise with a commitment to community-focused design, ensuring projects meet both functional and sustainability goals.

We prioritize client collaboration, offering tailored services that address unique challenges while adhering to strict quality standards. Our decades of experience in grant acquisition and asset management further solidify our reputation as a trusted partner for public and private sector clients seeking reliable, forward-thinking engineering solutions.
Services
Wastewater Engineering Water Facilities Engineering Municipal Engineering Structural Engineering Environmental Engineering Surveying Services GIS & IT Solutions Traffic Engineering Construction Administration Grant Assistance
Details
  • Year established: 1973
Highlights and features
  • We offer 50+ years of experience in civil engineering and surveying services.
  • Our team provides comprehensive solutions for water, wastewater, and transportation infrastructure.
  • We prioritize client collaboration and community-focused engineering design.
  • Our services include grant acquisition and asset management expertise.
  • We maintain a proven track record of project delivery on time and budget.
What people say
Exceptional customer service Cost-effective solutions Timely project delivery Technical expertise Grant assistance
Services
Wastewater Engineering
Carroll Engineering designs and rehabilitates wastewater collection, conveyance, and treatment systems for municipalities and private utilities. Our services include system condition evaluations, inflow/infiltration investigations, and asset management planning. We specialize in biological nutrient removal processes and regional pump station design, ensuring compliance with environmental regulations while optimizing operational efficiency for clients across Pennsylvania and New Jersey.
Water Facilities Engineering
We plan and design comprehensive water supply systems from source to endpoint, including groundwater wells, transmission mains, and storage tanks. Our engineers utilize computer modeling for cost-effective upgrades and interconnectivity solutions between water suppliers. Services extend to treatment systems addressing contaminants like PFAS, with expertise in SCADA integration and infrastructure asset management for sustainable water distribution networks.
Municipal Engineering
Our municipal services include subdivision planning, stormwater management, and capital improvement projects for townships and counties. We assist with zoning, land development permits, and MS4 compliance programs while providing grant procurement support for water/wastewater infrastructure. Our team facilitates road paving programs and floodplain management solutions tailored to local regulatory requirements and community needs.
Structural Engineering
We offer structural design and assessment services for bridges, buildings, and water/wastewater facilities. Our NBIS-certified inspectors perform bridge load ratings and rehabilitation planning, while our construction administration team ensures code compliance during project execution. Expertise spans multiple materials including steel, concrete, and timber for both public infrastructure and private development projects.
Environmental Engineering
Our environmental team addresses contaminated site remediation, geological assessments, and regulatory compliance for commercial and municipal clients. Services include LEED certification support, soil and groundwater remediation design, and environmental permitting for land development projects. We integrate sustainable practices into infrastructure planning to minimize ecological impacts while meeting federal and state requirements.
People
Gary Zanolini
Survey Department Manager
With over 15 years of experience, Gary leads surveying operations for residential and commercial developments. He specializes in boundary surveys and construction stakeout, maintaining strong client relationships through precise field data collection and timely project delivery.
Tom Wilkes
Senior Project Manager
Tom provides municipal engineering expertise with 15+ years of experience in comprehensive planning and infrastructure projects. He specializes in Delaware state regulatory compliance, overseeing water system upgrades and municipal facility designs while serving as a trusted advisor to local governments.
Michael McCarey
Senior Environmental Engineer
Michael specializes in wastewater treatment plant evaluations and flood-proofing solutions. With expertise in infrastructure resilience, he develops cost-effective engineering approaches for municipal clients facing climate-related challenges in New Jersey and Pennsylvania.
John Swenson
Structural Engineering Manager
John leads structural design projects including bridge replacements and municipal facility upgrades. His technical leadership ensures code-compliant, durable infrastructure solutions for public clients, combining analytical precision with practical construction oversight.
Robert Pingar
Westtown Township Manager
As both client and engineering consultant, Robert brings dual perspectives to municipal infrastructure challenges. He oversees sewer system improvements and capital projects, leveraging technical expertise to enhance service delivery for Pennsylvania communities.
Questions
What engineering services does Carroll Engineering specialize in?
We specialize in wastewater and water facilities engineering, municipal infrastructure, structural design, environmental remediation, surveying, and grant acquisition services for public and private sector clients.
Which geographic areas do you serve?
We primarily serve Pennsylvania, New Jersey, and Delaware from our regional offices in Warrington, King of Prussia, Malvern, Easton, and Hillsborough.
Can you assist with municipal grant applications?
Yes, our dedicated Grant Solutions Team helps clients identify funding opportunities and complete applications for programs like PennVEST and C2P2 grants.
Do you provide emergency engineering services?
While we don't offer 24/7 emergency services, we prioritize prompt response for critical infrastructure issues during regular business hours.
What industries do you work with?
We serve municipal governments, water/wastewater authorities, residential developers, commercial clients, and industrial facilities across the Mid-Atlantic region.
How do you ensure project quality?
Our quality assurance process includes multi-stage reviews, certified construction observation personnel, and adherence to state and federal regulatory standards throughout project lifecycles.
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