Septic System Design

Civil 1 provides septic system design services that ensure your site meets health codes, environmental standards, and long-term functionality. We engineer systems tailored to your property's soil conditions, site layout, and usage needs for efficient, code-compliant wastewater management.

Septic System Design

Civil 1 provides septic system design services that ensure your site meets health codes, environmental standards, and long-term functionality. We engineer systems tailored to your property's soil conditions, site layout, and usage needs for efficient, code-compliant wastewater management.

Septic System Design in Woodbury, CT

Engineered Wastewater Solutions for Residential and Commercial Projects

When it comes to onsite wastewater management, a properly designed septic system is critical to both environmental health and project success. At Civil 1 we offer professional septic system design services for residential, commercial, and municipal clients. Whether you’re building on undeveloped land or replacing a failed system, our team works closely with health departments, soil scientists, and property owners to develop code-compliant systems that meet both current regulations and future use demands.

What Is Septic System Design?

Septic system design is the process of evaluating site conditions and engineering a wastewater treatment solution that safely disposes of effluent underground. The system typically includes a septic tank, distribution piping, and a leach field or alternative treatment area. Design considerations include soil type, percolation rate, groundwater levels, topography, and projected flow from the building. At Civil 1, we create septic designs that balance efficiency, compliance, and long-term reliability—customized for your exact location and project type.

Why Septic Design Matters

Septic systems are often “out of sight,” but they should never be out of mind. A poorly designed system can fail prematurely, contaminate local groundwater, or delay permits—especially in areas with restrictive health codes. Civil 1’s deep experience in Connecticut and surrounding states gives us an edge in designing systems that are not only technically sound but also approved quickly by local health departments. Whether your project is a tight-lot residential build or a high-capacity commercial facility, we bring expertise that keeps your project on schedule and in compliance.

Our Process: From Soil Testing to Final Design

Our septic design process begins with a site visit and coordination with licensed soil scientists to perform percolation tests and deep observation holes. We then analyze topography, setbacks, zoning requirements, and site-specific constraints to determine the most effective and compliant system design. Using advanced CAD tools and years of field-tested knowledge, our team prepares a complete engineered plan, ready for health department submission. Throughout the process, we handle communication with regulatory authorities and remain available to answer questions during installation and inspection.

Get Your Septic System Design Right

Your septic system is too important to leave to guesswork. Civil 1 delivers engineered, approved, and buildable septic system designs that protect your property, your investment, and your peace of mind. Contact us today to start planning a septic system that meets every standard and works for the long term. We bring a thorough understanding of local soil conditions, health department expectations, and permitting timelines. Whether it’s a new build or a system replacement, we’ll guide you from concept through approval with confidence. Contact us today to learn more about our septic system design services!

Contact Us

For more information, call us at  (203) 266-0778 or fill out the form.

Contact Us

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For more information about our comprehensive services, call us at (203) 266-0778 or visit our contact page.

For more information about our services or to request a free

quote, call us at (203) 266-0778 or visit our contact page.

For more information about our services or to request a free quote, call us at (203) 266-0778 or visit our contact page.

Why Choose Civil 1?

We bring vision, value, and confidence to every stage of development.

Experienced Team
Experienced Team

Over 40 years of hands-on knowledge across the Northeast's most challenging projects.

Proven Process
Proven Process

Our team's streamlined approach keeps projects moving from concept to construction.

Collaborative Approach
Collaborative Approach

We work side-by-side with clients, contractors, and agencies to achieve shared goals.

Regulatory Expertise
Regulatory Expertise

We know the permitting landscape in this area and how to navigate it - locally and regionally.

A logo for a company that has been around for 40 years.

What Our Clients Say

"In my 43 years of practice, I have never seen a project of this magnitude get approved this quickly or a survey/engineering firm more competent than yours. I would consider no other firm for any future project I become involved with. Congratulations to you, Brian and your entire staff."


Alexander Breiner

Meyers Breiner & Kent

"Civil 1 demonstrated the utmost professionalism and technical expertise while providing services for the CPV Towantic Energy Center. Their work product demonstrates their deep experiential base of knowledge for civil engineering matters."


Andy Bazinet

Competitive Power Ventures

"We are very pleased with the level of experience and expertise they put into every project. Civil 1's guidance from design, through permitting and to the completion of a project has helped us bring our projects to start faster and to completion at or ahead of schedule every time. Civil 1 has been a great addition to our team for all our engineering needs. We highly recommend Civil 1 for any engineering needs on all of your projects."


Mark Oczkowski

Earthworks Excavating & Landscaping&

"Curt and the entire team at Civil 1 were vital stakeholders in the PAL Park Project. Their professionalism, passion, and dedication to the project was unparalleled. They truly embraced Waterbury PAL's mission of building today's youth into tomorrow's leaders."


Police Chief Fernando Spagnolo

Waterbury Police Department

"In my 43 years of practice, I have never seen a project of this magnitude get approved this quickly or a survey/engineering firm more competent than yours. I would consider no other firm for any future project I become involved with. Congratulations to you, Brian and your entire staff."


Alexander Breiner

Meyers Breiner & Kent

"Civil 1 demonstrated the utmost professionalism and technical expertise while providing services for the CPV Towantic Energy Center. Their work product demonstrates their deep experiential base of knowledge for civil engineering matters."


Andy Bazinet

Competitive Power Ventures

Industries We Serve

We proudly provide tailored engineering solutions across a wide range of industries, helping clients achieve successful and sustainable outcomes.

Project Name

Service Provided

Project Name
Project Name

Our Work

Our diverse portfolio highlights the skill, innovation, and attention to detail we bring to every project. From concept to completion, we are proud to deliver exceptional results that meet the unique needs of our clients.

An aerial view of a baseball field and basketball courts

Waterbury PAL • Waterbury, CT

Site/Civil Engineering

Land Use Permitting

A large blue and white building with a sign in front of it.

Basement Systems, Seymour, CT

Site/Civil Engineering

Land Surveying

Land Use Permitting

A red restaurant building with a white porch and barrels in front of it

B. United International, Inc.,Oxford, CT

Site/Civil Engineering

Land Surveying

Gen-El-Mec Associates, Oxford, CT

Site/Civil Engineering

Land Use Permitting

PSEG Power Connecticut, Bridgeport, CT

Site/Civil Engineering

Restaurant Depot, Waterbury, CT

Site/Civil Engineering

Land Use Permitting

Waterbury PAL • Waterbury, CT

Site/Civil Engineering

Land Use Permitting

Basement Systems, Seymour, CT

Site/Civil Engineering

Land Surveying

Land Use Permitting

Frequently Asked Questions

  • Do I need a septic system design before applying for a building permit?

    Yes. Most towns and health departments require an approved septic system design before issuing a building permit, especially for new construction or major additions.

  • Can you help with septic design for difficult lots or failed systems?

    Absolutely. We specialize in working with challenging sites, including small lots, high groundwater, steep slopes, or failed existing systems. Our experience helps us find creative, compliant solutions where others can’t.

  • How long does it take to complete a septic system design?

    The timeline depends on weather, testing availability, and local review processes, but most designs are completed within 2 to 4 weeks from testing. We keep clients informed every step of the way.

  • Will Civil 1 handle communication with the health department?

    Yes. We manage the submittal, revisions (if any), and follow-up with local or district health authorities to help streamline the approval process and save you time.