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Trusted Septic System Installation & Repair in Ontario
Slagter Construction has established itself as a trusted leader in septic system installation and repair across Ontario, Canada. With over 80 years of combined experience among our family crew, we specialize in delivering high-quality solutions tailored to challenging soil conditions and complex regulatory requirements. Our team holds specialized certifications including Eco-Flo system installation and Drain Licensing, ensuring compliance with Ontario Building Code standards. Rooted in Dutch-European craftsmanship traditions, we combine precision engineering with Christian values of integrity and service, maintaining transparency in all client interactions.

From conventional septic systems to advanced tertiary solutions, our expertise extends to both residential and commercial projects. We utilize cutting-edge technology while preserving time-tested construction principles, having successfully completed hundreds of installations in diverse geological conditions. Our commitment to ongoing training in propane handling, welding, and environmental compliance ensures every project meets exacting safety and performance standards. This dedication to excellence has earned us recognition as one of Ontario's most trusted septic contractors.
Services
Septic System Installation EcoFlo Septic Systems Septic Repair Services System Design Consultation Soil Assessment Testing Commercial Septic Solutions Raised Filter Bed Systems Drain Field Installation Septic Tank Replacement Code Compliance Services
Highlights and features
  • We have over 80 years of combined experience in septic construction
  • Our team holds specialized Eco-Flo system certifications
  • We utilize advanced technology for precise installations
  • We maintain 100% transparency in all client communications
  • Our family crew follows strict Dutch-European craftsmanship standards
Associations and certifications
  • Eco-Flo Certification
  • Drain Licensing
What people say
Professional and competent crew Exceeded expectations Hard working team Customer-first approach Reliable and timely service
Services
Septic System Installation
We specialize in complete septic system installations for residential and commercial properties. Our certified technicians handle all system types including conventional, secondary, and tertiary systems. Each installation follows strict Ontario Building Code requirements while accommodating challenging soil conditions through customized engineering solutions.
EcoFlo Septic Systems
Our certified team installs advanced EcoFlo tertiary septic systems designed for difficult soil conditions. These environmentally-friendly systems use patented filtration technology to meet strict regulatory standards while maintaining long-term performance in high-clay areas across Ontario.
Septic Repair Services
We diagnose and repair failing septic systems using proven methods that extend system lifespan. Our services include tank replacement, header pipe repair, and biomat remediation while maintaining compliance with current building codes and environmental regulations.
Soil Assessment Testing
Our experts conduct comprehensive soil evaluations to determine optimal septic system design. We analyze percolation rates, soil composition, and drainage patterns to recommend code-compliant solutions tailored to each property's unique geological characteristics.
Code Compliance Services
We ensure all installations and repairs meet Ontario Building Code requirements through expert permitting assistance. Our team navigates complex regulations including setback distances, system classifications, and environmental protection standards to secure timely approvals.
People
John Slagter
President
Trained as a Master Bricklayer and Carpenter in the Netherlands, John brings decades of construction expertise to Slagter Construction. He leads our team with a commitment to Dutch craftsmanship principles and Christian business ethics.
Questions
What septic system types do you install?
We install all system types including conventional, secondary, tertiary (EcoFlo), and raised filter bed systems to meet Ontario's diverse soil conditions.
How do I know if my septic system needs repair?
Common signs include slow drains, pooling water, sewage odors, or frequent pumping needs. Our technicians can diagnose issues during site assessments.
Do you handle permit applications?
Yes, we assist with Ontario Building Code compliance and permit applications, leveraging our expertise to expedite approvals.
Can you repair old septic systems?
We specialize in repairing aging systems while maintaining code compliance, often extending system lifespan through targeted interventions.
What areas do you service?
We serve Burlington, Hamilton, Niagara Region, Guelph, Milton, and surrounding Ontario areas with customized septic solutions.