Reliable Wastewater Solutions You Can Trust
A properly installed sewer system is essential for the hygiene, safety, and performance of any property. In Auckland — where new developments, older suburbs, and unique ground conditions can place stress on underground pipework — faulty or outdated sewer lines can lead to leaks, blockages, contamination, and costly remediation.
A sewer line carries wastewater from your home or building to the public network. If it’s damaged, undersized, or incorrectly installed, it can cause slow drainage, odours, pipe collapse, or flooding. Ensuring your sewer system is built correctly and connected safely to Auckland’s network is critical for both compliance and day-to-day reliability.
AH Drainage specialises in the installation, repair, and replacement of sewer systems across Auckland’s residential neighbourhoods, commercial sites, subdivisions, and public infrastructure. We manage every stage — trenching, alignment, pipework, connection, testing, and certification — ensuring your system operates efficiently and meets all Watercare and council standards.
Sewer Systems for Every Type of Project
AH Drainage delivers complete sewer solutions for:
Residential properties
New builds, extensions, and full line replacements
Commercial developments
Large-capacity sewer systems for demanding environments
Public infrastructure
Council works, subdivisions, and shared network connections
Remediation work
Repairs after failures, flooding, or structural damage
Compliance and inspections
Bringing older, non-compliant systems up to current standards
Certified Drainage Expertise from Start to Finish
With more than 50 years of drainage experience, AH Drainage is trusted for sewer installations completed correctly the first time. Senior Certifying Drainlayer Allen Harriman oversees every project to ensure accuracy, durability, and full compliance with Watercare and Auckland Council specifications.
End-to-end service — design, installation, connection, and certification
Full compliance with New Zealand Building Code, Watercare, and council requirements
Rapid response for urgent repairs or replacements
Extensive experience across residential, commercial, and public infrastructure
We show up when we say we will and deliver work that stands the test of time
Book a Certified Sewer Installation or Repair
Talk to AH Drainage about installing, upgrading, or repairing your sewer system. We deliver compliant, long-lasting solutions backed by over 53 years of proven drainage experience across Auckland.
Frequently Asked Questions
Do you install new sewer connections for residential builds?
Yes. We install new sewer lines and connections for homes, subdivisions, and developments — managing all Watercare and council paperwork.
Can you repair or replace existing sewer pipes?
Absolutely. We diagnose and repair leaks, breaks, or blockages and replace old lines with modern, compliant systems.
How do I know if my sewer system needs replacing?
Warning signs include slow drainage, foul odours, or recurring blockages. A CCTV survey can confirm internal damage or misalignment.
Are your sewer installations certified?
Yes. All work is completed and signed off by a Senior Certifying Drainlayer, ensuring compliance with New Zealand standards.
Do you coordinate with Watercare and Auckland Council?
We manage all required applications, inspections, and compliance documentation to streamline the process for our clients.