Cathcart Drainage provide expert installation, maintenance, and repair services for a range of tank systems essential for managing water and waste on your property. With years of experience serving residential clients across Auckland, we specialise in detention tanks, retention tanks, and septic tanks – offering reliable, high-quality solutions that protect your home, land, and the environment.
Cathcart Drainage Tanks & Systems

Detention Tanks
Detention tanks are a crucial part of stormwater management, temporarily holding water and releasing it slowly to prevent flooding and excess strain on local drainage systems. We offer tailored detention tank solutions to meet council regulations and your property’s unique needs, ensuring stormwater is efficiently controlled during heavy rainfall.

Retention Tanks
Retention tanks provide a sustainable way to manage water, storing rainwater for future use in irrigation, household tasks, or even drinking water (with appropriate filtration). Our team expertly installs and maintains retention tanks, helping you reduce water bills and conserve water resources, while keeping your property compliant with local water use regulations.

Septic Tanks
Properly functioning septic tanks are essential for properties without access to main sewage systems. Cathcart Drainage offers septic tank installation, servicing, and repairs, ensuring your waste management system runs efficiently and safely. From selecting the right size tank to ensuring it complies with environmental standards, we take care of everything to give you peace of mind.