Certified Drainage for Councils & Infrastructure Projects
AH Drainage delivers reliable, compliant drainage solutions for public works and infrastructure projects across Auckland. Led by Senior Certifying Drainlayer Allen Harriman, our team ensures every installation meets strict standards for safety, performance, and long-term durability.
Trusted Partners for Public & Infrastructure Drainage
With over 50 years of experience, AH Drainage works alongside councils, engineers, and civil contractors to deliver high-quality drainage systems for roads, subdivisions, and community infrastructure. We understand the technical accuracy and regulatory precision required for large-scale public works — and we deliver consistently.
Our certified team manages full drainage delivery, including design support, coordination with consultants, and all Auckland Council and Watercare documentation. From complex stormwater management to sewer installations and flood prevention, we ensure projects are completed safely, efficiently, and to public-sector standards.
Public Drainage Services
AH Drainage provides a full range of certified drainage services for councils, infrastructure providers, and public works contractors. We deliver dependable workmanship, transparent communication, and full documentation for every project.
Sewers
Installation and maintenance of public and subdivision sewer systems. Built for capacity, reliability, and full regulatory compliance with council standards.
Stormwater
Large-scale stormwater drainage systems designed to manage runoff, protect public assets, and reduce flooding risk.
Subsoil Drainage
Engineered subsoil systems to stabilise public areas, roadways, and retaining structures, ensuring longevity and safety.
Driveway Channels
Surface and channel drainage solutions for public accessways, car parks, and paved areas, preventing water damage and pooling.
CCTV Surveys
Specialist CCTV inspection and reporting for public drainage networks. We provide accurate data for maintenance, compliance, and asset management.
Flooding Solutions
Rapid response and remediation for public flooding and stormwater failures, restoring safety and preventing future events.
Waterproofing
Structural waterproofing for retaining walls, culverts, and below-ground assets — protecting public infrastructure from long-term damage.
Insurance Remediation
Assessment, repair, and reinstatement of public drainage systems following flood or weather-related damage, with full insurance documentation support.
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Partner with Auckland’s Public Drainage Specialists
Talk to AH Drainage about your council, subdivision, or infrastructure project. We deliver compliant, efficient drainage systems built for public performance.