Septic System Design Done Right
Professional septic system engineering & design, soil testing coordination, and code-compliant plans for homeowners, builders, and rural properties.
With over 20 years of experience, we provide professional septic system engineering and design for residential and commercial projects throughout Eastern Missouri.

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Local Expertise You Can Trust
RSH Engineering & Design LLC specializes in onsite septic system design for residential and rural properties throughout Eastern Missouri, including Jefferson, St. Charles, Franklin, and Lincoln Counties and surrounding communities.
Backed by more than two decades of experience, we understand the local soil conditions, county requirements, and design considerations needed to help projects move forward smoothly.
- 20+ Years Experience
- Septic System Engineering
- Septic System Design
- Local Code Expertise
- Competitive Pricing
- Residential & Rural Properties
Septic System Engineering and Design Services
Professional planning and design services tailored to your property, your soil conditions, and local code requirements.
New Septic System Engineering & Design
Complete septic system layouts and plans for new homes, rural properties, and new construction projects.
Repair System Design
Design solutions for failing, outdated, or damaged septic systems that need replacement or redesign.
Soil Testing Coordination
Assistance arranging soil testing and site evaluation when required for a proper septic system design.
Installer Coordination
While we do not install systems directly, we can help coordinate with qualified contractors for the installation process.
Simple Process from Start to Plan
A straightforward process designed to help homeowners and builders move forward with confidence.
1. Contact Us
Call or reach out online to discuss your property, project, and location.
2. Site Review
We review the site conditions, property layout, and soil testing needs.
3. System Design
Detailed, code-compliant septic system plans are prepared for your property.
4. Move Forward
We help you take the next step toward permitting and installation coordination.
Why Property Owners Choose RSH Engineering & Design
Septic system design is too important to guess at. We focus on getting the design right before installation begins.
- Over 20 years of septic design experience
- Strong familiarity with Eastern Missouri and local requirements
- Practical designs built around the realities of your property
- Cost-conscious planning that helps avoid unnecessary issues
- Personal, local service from a trusted small business
Proudly Serving Eastern Missouri and Surrounding Areas
Trusted by homeowners, builders, and developers across Jefferson, St. Charles, Franklin, and Lincoln Counties
